Full Cycle 6-meter round narrated
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- Опубліковано 1 сер 2024
- Full 6M cycle.
took me longer to edit and narrate this than it did to actually do the cycle.
this full cycle took about 24 hours.
Mucking took about 6-8 hours
Shotcrete took about 4 hours
Bolting took about 2 hours
Drilling took 5-8 hours
Load and blast took about 3 hours
Services and pipe fitting was done behind the drill
One of my longest videos so I added chapter markers for each part of the cycle ;)
Chapter 0 Mucking - 00:00
Chapter 1 Scale - 0:49
Chapter 2 Shotcrete - 4:37
Chapter 3 Bolting - 15:24
Chapter 4 Drilling - 20:10
Chapter 5 Loading - 27:53
Chapter 6 Blast and Gas - 39:10
Appreciate your effort and clear commentary to deliver the first hand experience as it is!
So much attention to detail and patience (it seems). Thanks for talking the time to show this.
I'm speechless... This is off the charts of how incredibly amazing... This really puts things in perspective up here where the sun shines... I feel... USELESS
This was really cool to see mining at this scale. I've only ever worked on tiny jackleg headings
Dude, this was awesome to see the process, as someone who is going underground for the first time, soon. Thanks for the effort!
AvE sent me here to your channel a long time ago and I always love this sort of content.
Thanks, Mate!!!
ALAPINO same here ! Awesome workings !! Love Ave too ... whoever the frig he is !
AvE sent me here too. What a guy. He also sent me to Abom.
@Hilma Gegenheimer FYI to anyone reading this, this is some sort of weird bot set up that has these two have a fake conversation about Instagram password hacking. Pointless and ineffective.
I never worked UG. I had overwhelming desire to go home at the end of the day. I really admire, and understand, the joy of a good crew. You guys are good. “We get to play in the sandbox. With the water hose. And we get paid for it.” I miss the work.
I worked underground as a diamond drill offsider, it's not for everyone that role, I don't like being underground for so long, just away from the sun etc. Feels depressing
This is a great training video, you and your crew should be proud. That little girl sure is a time and lifesaver. I never did any hardrockin but I did work 8 yrs at 10,500' in a 30' uncontaminated beautiful Anthracite coal seam. We went 8,000' at a 15% pitch down under the mountain, 12 mi. from Aspen, Co.(as the crow flies) doing "Room and Pillar mining. At the Dutch Creek #1,2 and #3 mines. Most exciting time of my life. There were many tragedies and many rewards but theres nothing like working with a well oiled crew. That was 40 yrs. ago and I still miss a lot of those guys. Ty, you did a great job on the video.....wait for it......lol
Very interesting! Thanks so much for sharing all the work that is needed to tunnel.
Well detailed and compiled. Great narration too. Appreciate your time and effort in sharing this. ✌🏽👍🏽💯💥💣⛏️
This is Gold.
Cheers for posting this, this not much of this that has been filmed and put for everyone to see, let alone with commentary from someone who's there working at the face
Definately a bit different to the U/G mines I have worked at in northern WA/NT, Australia. Everywhere I've worked a jumbo does all the scaling, mesh and bolting and then charging is done with a normet or orica charge rig. I've never even seen a dedicated machine for scaling nor a twin boom jumbo with a man cage, although everywhere I worked has had sandvik drills not atlas
Really cool and informative.
Glad “she is fine” after the blasting!
Super interesting. I work as a surveyor (engineer) in civil projects. Never done the ground works like this though. In the tunnels I've been it was already blasted, ready for construction of services, roads, constructions inside etc. You don't understand how moist, dirty, dusty, muddy, noisy and wet a raw tunnel is untill you work in one, as you would know :D I was very happy when we finally built a provisional road from crushed and compacted rock to move us up and away from the mud...
Absolutely love this!!!
Underground Life! ... that vent tube was gorgeous
Also was sent over from AvE a long long time ago. The vids where you just show what happened are interesting, but the explanation makes it easier to understand.
Great job Jory!
This is perhaps the best UG video I have watched. I've been around the world operating UG. and the quality of the video, the organization of the tasks, the narration.. you should be doing the next UG film (not LOS 33 though). congratulations, more than just informational, it is very inspirational.
Thank you very much.
Very informative and interesting, thank you!
muy bien video!, gracias por compartir.
Great job on the video. Thanks!
Thank u so much for the walk thru on your day
Not sure why I’m watching this video for the third or fourth time. I just find it so incredible. It’s another world.
That comment makes my day . So glad you enjoy it . I love sharing
nothing like it, who are the diamond drillers on site? Do you know?
No diamond drillers on this site ..it's not a mine
@@JoryDion just realized when the video ended. Is it just gonna be a travel tunnel of some sorts?
@daniellysohirka4258 for water .
This was really cool to see. Thanks for talking it though.
Excellent work Jory! Your narration is really clear and helps explain all aspects of the process, whilst also providing tips and advice on best practice and what to look out for. Love the Boomer E2!
thanks for watching and the comment! I love the boomer E2 also
@@JoryDion Must confess, I work at the Epiroc factory in Sweden - so am perhaps a bit biased about the E2 - would have been really interesting to see how some COP 3030 or 4038 rock drills would have gone in cutting down the drilling part of the cycle - especially as you were doing 6m rounds. Though for that Canada needs to try 1000V systems due to the power requirements (95/110kW powerpack per rock drill)...... I have forwarded a link to your page to some of my training department colleagues - hope that is OK? I really like the style you have used in presenting the tunnelling process for this hydro tunnel job in BC (also like your mining clips as well). Keep safe, and Happy New Year!
@@bunyip7343 Epiroc factory in Sweden!?! So cool 😍. I really miss the E2C booms for side winders! I’d be honoured knowing some of my videos making the rounds at Epiroc factory.
@@JoryDion Those double rotation units on the BUT 45 booms do make life easier for cross-cutting....they are stiff and fast moving as well, cutting down positioning time. I used to look after the Boomers from 2007-2013, though now have the Boltec/Cabletec machines. Bolting in Canada is undergoing some big changes now with the push for boom bolters vs the old scissor lift stuff... hence Canada is a growing market for my machines. I have been in Sudbury many times over the years. Next time I am in Canada, will have to track you down for a beer..... Covid begone!! Keep safe mate!
@@bunyip7343 I have heard lots of the Boltec but never seen one in action. Would love to see / try and compare to DS411. I have watched some videos but hard to get the feel for the use, all videos are ideal scenarios in a test mine with no screen lol. I love to chat mining or equipment anytime. im on the other side of Canada from Sudbury though lol. I have personally kinda moved on from
Jumbo to new bolters myself . The operating of the new bolters is super fun and in my opinion more complicated and lots of room for creativity in machine operation.
thank you, nice job.
I had no idea at the amount of work that goes into this. I thought you just drill a hole Chuck a banger down it and walk away. I’m amazed. Forgive my ignorance!
saw u on ave channel and i had to come see your stuff its cool
You need a 1 inch hose with half inch inverted coupling sticking out the end for high pressure to wash your grout/shotcrete off. Connect it to the nearest header, she'll tear that stuff off there, and I always dressed in my full slickers. Pants and jacket. We had high pressure grouting, like 300 PSI+. We used Chem Grout machines 600 volts, we'd have to use Japanese superfine to fill in the seems. The was only in the Uranium mines in northern Saskatchewan, and it was freezing there was icicles hanging off the back. They used 6" thick shotcrete in the ore zone for shielding of radon gases and radon progeny. Aren't you supposed to shut the fan off for a blast so it doesn't damage the fan, that's what we've always done for long hole.
That is actually pretty impressive stuff. It's easy to forget how advanced the equipment used in these kind of jobs are unless you get to see them. It's all about maintaining and controlling the huge ass machines, it feels like something out of an old sci-fi movies like Aliens. And definitely something I couldn't do with my crappy ass stereoscopic vision. :)
Most interesting video on UA-cam. Yes still watching to the end. Excellent sound and camera work.
Yes the vent tubing is nice and straight. The cross shift must have put it up for ye eh?
As a person who did all this by handish I had great fun figuring out what you were up to. Great camera work and explanations. Our tunnel rounds were, of course, only 8 to 10 feet high x 8 feet wide x 8' deep so different kettle of fish. Nice cut, even straighter than the vent tube. Learning to drill 8 foot long holes parallel with a jack leg has stood me in good hands for the drilling I do now as a renovator electrician. Never wanted to cross holes with a hand held pneumatic drill with hoses all over it to wrap you up. Safety fuse, stick power, nitro headaches, and orange prill anfo. Oh ya and termolite for connecting the holes.
22,000 fps is what I learned as well. Were you using non-els or primacord to the time delayed detonators at the bottom of the holes? Don't need time delays when you use thermolite safety fuse ignitors as the burn rate is something like a couple of inches per second not 22,000.
Never have to pump iron when you are working underground, or at least I never did. Just scaling out the round with those long steel scaling bars was quite the work out as was collaring those holes on a 4 or 8" steel in the 80lb jackleg being held in place by a scrawny 145 pound miner.
At the end of the day I just didn't weigh enough and had to go learn to do something else.
Thanks for showing us what you were doing up there. I could have gone to Myra when I moved back down here in '76 but I knew I was a light weight and couldn't cut it. Plus Myra was trackless and all I had done was tracked so I discovered tree planting instead and later transferred my blasting knowledge over to developing an avalanche control program at Mt W. You learn a lot of life skills underground like keeping your head up and planning ahead plus like you were saying, be efficient, don't waste time and energy, be thorough and do it right the first time for example.
I'm going to say it again, outstanding video. Thanks for putting in the effort.
Going to share this on the Book of Faces so perhaps you might get a few more hits for such a yeoman effort.
I am not sure how I missed this comment and sorry for a late reply.
We used non-els and B-line (primacord) for detonation. Long steel scaling bars all the way rather than the gym for sure!
I started in the track drift at Myra actually, they had several track drift parts of the mine all conventional mining.
you are probably healthier now from tree planting and avalanche control ;)
And the award for the best use of Thermolite in a music video goes to . . . . .
Muse ;)
ua-cam.com/video/w8KQmps-Sog/v-deo.html
Interesting to compare this to those channels that explore old mines that have much smaller narrower tunnels.
Impressive stuff. I have zero knowledge of underground mining. This is really interesting to me..
Thank You for Sharing your experience, I´m from Perú
Glad you enjoyed.
Great video
Thanks glad you enjoyed
That’s artist work
Thanks for sharing.
You guys do it VERY differently to us here in Australia.
After the loader clears the blast, we either use the jumbo to scale and mesh the heading and then check for butts, or the hydroscaler on the shotcrete rig to wash out any holes.
Then shotcrete if/when required depending on local ground conditions.
Either way, there is never ever anyone under unsupported ground, even if scaling has been completed.
That's a big risk removed.
We also use the same jumbo to bolt with, before boring the cut.
Saves having so many different machines and also the set up time to swap them out.
you use split sets mostly? or? We used just the 1 split feed jumbo for bolting and drilling for a short while. but when we got the big 6 meter slides it gained us a lot of ground over week.
@@JoryDion
Typically, yes.
And on the longer decline cuts like the ones in your video, we have a dedicated bolting Jumbo to assist the automated development jumbo.
Australia was the reason, back in the day, that companies like Sandvik (Tamrock) offered the Extra Swing components on the rails to get around 90°deg to the roof and walls.
@@Danger_mouse I have always wanted to see the ground support method in Australia. do you add each split set by hand? or have a carousel? I have done lots of split setting with jumbo but have a hard time imagining the safety efficiency method for full ground support.
@@JoryDion
The operator typically has a drill off-sider who loads bolts into the rail for the jumbo operator.
By turning the rail around, the off sider can remain under supported ground during loading.
Operators generally prefer Power Class Sandviks, with their pilot controlled hydraulics, rather than the electronic Super Drill models due to being able to operate multiple boom levers at the same time to speed up the process.
They can be lowering and swinging the boom while rolling and swinging the rail all at the same time.
The Super drill is 2 x movements at a time max.
Watching a good competent operator lift, drill, hold and bolt a sheet of mesh in place is a pretty cool thing to see.
@@Danger_mouse this is the same method we use but often do not have a helper due to the limited workforce.
what are minerals are you mining? this is very interesting and professional
very interesting
I found your vids through AVE also, credit to both you guys!!
Really fascinating stuff, and amazing how intricate the process seems. I was wondering during the blast at 40:36, what caused the spark below the vent tube?
good eye. That was fly rock.
Hell yeah beachday sandbox . That's gonna be my attitude for the first hours tomorrow morning
oh ya buds. sandbox all the way
I'm an apprentice electrician in Vancouver, is there any companies I can apply to up north or on the island to get into this sort of stuff?
Tynan Cuthbert nyrstar which owns Myra Falls Mine is re starting on the island. Or you might want to try New Gold news afton mine in Kamloops.. lots of open pit mines in the province too..
In one word: Perfectly Narrated! Well done! I just think that drilling burncuts is missed out? an maybe extending services as well. I greatly appreciated if you just add to the cycle timing above how long it actually took as well for instance: mucking 1 hour. and one last thing, how big is the profile? and the blasting depth is 6m or is it 6*6 drive profile?
profile is 8.3m-8.5m
Hey bro!
Good job!
Thanks for your videos, its very interesting to see how our foreign colleagues work.
Can you answer, what kind of ground was in this video? We usually use 2 or 3 meter cycles, but 6!!!
Good luck and be carefull!
Being close to surface they called it class 1...🤷♂️ class 2 and 3 needed longer support.
Longer rounds are easier with computer jumbo and controlled blasting .
i didnt know these tunnels were so massive
The more you know right
Did you take a shift to advance your services (air, water, drain, vent, etc) or was that done during one or more of the activities in your video? Thanks for an informative description of the development round
services where usually installed behind the jumbo during the bolt / drill part of the cycle
If you didn't shotcrete the rounds, would you still do total station navigation when bolting or would you bolt based on the operators judgement?
This is actually a tunnel job so all ground support is orseen by an engineer. eventually we just switched to pattern bolting based on total station navigation.
awesome video ! cheers for sharing, one question.. was this cycle performed in one day? would the next day be exactly the same?
The cycle was avg about 11 hours. Usually was the same thing everyday unless someone had a really good or bad day (night shift / day shift)
Awesome! HI, Can we know the number of reamer holes and dia drilled and the pull you are getting?
I was drilling 5 3'' reamers, 6M pull. Pull being the the amount of ground broken after the blast?
Great video Jory! Is this in Phillips Reach?
negative. way to professional. John heart project.
Why are they installing bolts in in supported ground,and can they drill and bolt with jumbo at same time
The shotcrete is temporary support that men are allowed to work under. The additional bolts are for long term ground support.
This is so cool! How deep down are you, what’s the temperature down there?
Not that deep maybe couple hundred feet 🤷♂️. Similar tempnas outside maybe 5 degrees warmer
Thanks for the expert video clips and narration in easy to understand terms. Your video production time did take longer than a full cycle. Most people only see the 'boom' and nothing else. Planning and Prep is usually unseen by outsiders. All those carefully placed holes drilled themselves, loaded themselves, wired themselves, and magically made many tons of rock go boom and move themselves.
Hard rock blasting in a quarry is challenging enough, but controlling it underground is a whole level more difficult. Drilling is much harder, loading is much harder, and mucking is much harder. Mistakes underground tend to be more serious than above ground operations. I have witnessed above ground hard rock blasting. I would love to go underground and see first hand hard rock blasting in tunnels.
Can you imagine using some really 'Old School' techniques like hand held drill bit being hit with a sledge. Black Powder rammed into drill holes. Safety Fuse that wasn't so safe. Mucking out by hand and wheelbarrow. Before Black Powder, they would build fires at rock face then throw cold water to shock rock enough to break.
Yeah... the good old days were not so good if you were making tunnels.
Glad you liked the video. Makes the effort it takes to make them worth it 👍
@@JoryDion I was really impressed with your attention to detail and focus on safety. Your ventilation system was above and beyond: Fresh air in, bad air exhausted out. Water spray after each shot. PM on all equipment. You hit the nail on the head, far less expensive doing it right the first time.
I wasn't sure what was being pumped into drill holes after loading stick powder. I heard word 'water'. Didn't know if a slurry type explosive or just to confine force of blast. Water doesn't compress and really amplifies explosion. I have seen others use expanding foam insulation spray in a can to seal off holes.
Again, great job with video and your worksite.
@@SJR_Media_Group we pump emulsion it's like liquid stick powder
@@JoryDion Thank you it did look like emulsion and not water. I know on large quarry operations, emulsion is less expensive than stick. They use enough stick to ensure all emulsion detonates.
What amount of delay do you build in ? Final scene in video couldn't really tell, but there was a decent delay between blasts.
Standards and procedures and bonus systems vary, and tie your hands so to speak, but if the drilling was my option, I would be breaking that round nicely with under 80 holes. Sorry not meant to criticize, we needed to cycle this round in 24 hrs to make money. Nice to see different methods and equipment, I loved drifts this size but also loved smaller jack leg drifting. Good memories.
Yoshy small heading where my fav , i agree it could have been blasted In less but was heavily engineered controlled... I just drill to the plan or they give me shit ...we did cycle this 6m in 24 hours so Methods are up for debate. On this project I’m just a simple operator who crushed engineering job task completion expectancy .
Really Cool. Thanks for the video. Where is this mine located?
its a hydro tunnel not a mine. Working in both minining and tunneling I can say they are both underground but different for sure.
Hey, great videos you're making there! I work myself in a flourite mine. What are you doing in the ground holes after drilling? Is the wood or hose
we put PVC in the lifters (ground holes) to prevent material from getting in them and so they are easy to find after drilling is completed
Hey, thanks for the answer, really cool new videos! What size is your big drillbit in the free hole?
4 inch
Is that a Normet scaler? Series? Looks Normet tan/yellow in the light. Guy painting bootleg with the basket going under unsupported ground, even with a FOPS, is unusual. Same for that bolting cycle, haven’t seen it done quite like that in the 7 different countries i have worked in. I always enjoyed spraying shotcrete myself, something satisfying about it for me.
Not sure on the scaler model . Before the scaler we went in the basket and hand scaled ! Doing a civil Job in the tunnel was all different rules from mining . It was wierd at first
Wild we just bolt, bore, charge, muck, dump for development. Get about 3 rounds a shift.
Do the scaling and gs with jumbo
Yes it was weird at first to do it like this. This is not a mine, for civil projects we just do what the engineers want.
May I ask: why does the blast not just rip that ventilation pipe straight off the wall?
It is hung off chain and ground support bolts. you can have the blast actually pritty close and it survives
NIce
How long does it take you guys to cycle a 6m round? Also what's your average break on the round? Does it always break 6 meters or does it bootleg a bit?
Hamza Jaffri 24 hours was the cycle time. With 6 reamers it always broke to the nuts. 6.2m was average break. (Checked after every blast )
@@vanislerc3438 what length steel does the jumbo have?
Hamza Jaffri 6.4 m
Never mind! Watched to the end, hydro project.
I ran a Copco m2c for a short while I'm Sudbury. What make is yours?
E2C in these videos
Imagine back in 1800s how they would do this by hand.... HARD HARD WORK
RutherfordClan yes to hard , that’s why we made machines 🤷♂️
Exactly, if the historic miners could see how advanced mining has become ....incredible
@@rutherfordclan5693 I know guys who started mining after WWII with jacklegs and overshot muckers and wound up working trackless mines with longhole stopes and RRC LHDs. The industry has come a very, very long way in the last fifty years.
Hi Jory Dion. Very impressive stuff!!! Would you be ok if I use 3 seconds of your video (The explosion part) on a video Project of mine? Cheers
Sam Couto ya sure no problem
@@JoryDion Thanks! :)
I've been in mining for 18 years in various roles in several mines in Canada and the USA. I have to say this is the first time I've seen someone go under unsupported ground (even with a canopy over them to paint up the bootlegs. What Province is this?
Ya it was wierd . It's not a mine it's a tunnel so different rules 🤷♂️
nice vidio bro, piece miner from indonesia
Fantastic videos and narration! We should connect as my company is building some phenomenal tech to improve efficiencies and safety of these headings.
Send me an email
Any exposure to TBMs underground? I read about mechanical excavation making inroads in underground mining, but at the same time drill and blast tools seem to keep improving.
Red Daly yes everything is improving alot depends on who runs project and type
What Vent ducting are ussing
ABC soft duct and just some giant culvert tubes for our exaust
Hey Jory, just started as an air-leg nipper, any hot tips?
Pay attention. dont be afraid to think outside the box... Just because it's a job that has been done for so many years doesn't mean there isn't a better way to do something. Ask lots of questions. Show initiative. Always be eager to help.
Dude, nice video. But I blown away that you guys are allowed to go under the unsupported ground.
I’ve driven probably 10 miles of ramp, lateral drives, raise, shaft, etc. and I’ve never seen crews actually allowed to go under unbolted ground in a jumbo heading to do the prep work and bolt installation that is show in this video.
The only time ive seen it part of the process is in raise mining and some jack leg sub drifting.
Where is this video being shot?
Nice drilling FYI.. lol
It was weird for us at first to. The shotcrete is considered ground support and the bolts are just extra. There was no screen used at all in this project.
Is it common practice to stand beside the boom while shotcreteing as seen in this video we just had a guy die at the mine I work at when he allegedly fell and hit the controls in a way during the fall that caused the boom to crush him, the remote was pinned under him and the boom so they could not get it off him quickly
Cool video. How long in hours or shifts for the full cycle?
Shift and a half. Or just under 24 hours
@@JoryDion Right on. Appreciate the videos.👍
@@GrizzledVet no problem, glad you like the videos
Whats the company name of the Vent duct
we just used some steel culvert for out exaust duct. ABC is the only Duct company I know really
Do you have to be a licensed blaster to load and where is this tunnel.
-son_of Russ yes you need a ticket , or be under the direct supervision of someone with a ticket . This is in British Columbia
Awesome video thx for posting I’ve been blasting above ground for 15 yrs now and have always heard about tunnel shooting and wondered about the process.
Not in New Mexico, unless working at a surface coal mine, but this tunnel is not in New Mexico!
do these booms hit each other at some point?
only if the operator sucks
where do you guys work, every job i've ever been at, you are not allowed forward of the jacks when in operation
looks like a vent repair...lol, thanks for the cycle!!
This was a civil project in Canada that is now complete. You are correct about not workings infront of jacks when machine in operation. If the job required a man near the drill we would do a JHA (job hazard assessment)
This is incredible, what qualifications or career path does one need to go into to become that operator of the shotcrete boom?
I am sure there are many paths to take. Shotcrete is important underground and not overly saught after. I would say the first step is to get a job at a mine or a tunnel project. Then wait for a posting and make it obvious that is what you want to do. Just keep working at it.
@@JoryDion Just got in underground! finally lol, diamond driller offsider, and will try then get into nipper as I did a bit of research that's where you start in the path towards jumbo!
@@TCBYEAHCUZ Congratulations! Diamond Driller is a pritty cool job. All the jobs are related one way or another. Diamond Drilling is like the scout to where we want to go mining.
@@JoryDion Yup! Just done an 37 dip uphole, my boots are soaked! 😂
how big is that drift
8.2 meters x 8.3 meters
The ground control is really impressive alot of extra care I'm not used to seeing.
Saythein this is a civil project . Underground yes but lots more control then mining. Engineers where always watching a taking notes for their bosses .
@@JoryDion Oh ok that makes sence now. Ya we usually scale and bolt and sometimes screen brows but nothing like that. I also noticed you screen the ribs we almost never do that either.
Saythein not sure where in this video you saw any screen at all. Was all fiber shotcrete and mechanical bolts. Mining we screen the rib cause the ground here moves a lot so it’s important to bolt it up tight or it falls apart
@@JoryDion Ya i agree i duno how i flubed that comment, i think i was watching your video on labtop and commenting on phone and was watching that rehab drift with resign bolts. or possibly i saw the bolt plates and just assumed there was screen behind it. no idea but lots of respect you know your shit, i wish we had you at tha mine i work at.
Saythein all good! Thanks for the comments
From india ❤️🇮🇳
Collar prime your first hole or anything special to pull 6 meters? Especially with 4 reamers
No why would collar prime ? Very precise home burden is key I think
@@JoryDion Never tried it just heard it helps clear the cut better in the deeper/softer rounds.
Can't say I have ever tried that or understand how it would work. Very interesting
@@JoryDion I guess the idea is you start clearing rock from the collar first leaving more room as the hole detonates towards the back.
how long time to do 6 meters ?
Huide Drill depends alot on ground conditions. Drilling times range from 3-6 hours depending on ground
The motivation for a six m round? Won't you cycle better with a 4m round? Great video Tx.
That is a common assumption and in some cases true. We actually destroyed our projected completion time for this tunnel. for every 2x6M rounds you gain extra 4M. so 36m completed in 5 day work week then we had to do 40m probes on Saturday to stay ahead of the development. 20m vs 36m every week was a no brainer for bean counters.
what type of stemming is used undergound?
Depends on type of rock and type of blast. Mostly stemming is not needed for blasts
Jory Dion am asking because usually surface use chippings. So wanted to have an idea since without stemming the blasting agent energy will dissipate into the atmosphere
being in a tunnell there is no need to contain the energy from the blast. being at the end of the tunnell it is already in a safe location for blasting, fly rock flys and gases are exhausted to surface before workers re enter.
Pink snot by the look of it...
@@dorisdompiel8815 We didn't stem underground either. No need, and we never had a problem.
I take it this isn’t a gem Tourmaline mine, gold mine? Is this all Miner Mike approved? 😉
Not a mine at all. It's a civil hydro tunnel project
gonna be doing this in qld australia soon coal mine thanks for the vid
Congrats
@@JoryDion thanks, ya from the looks of things pretty similar, we export coking coal to china
I'm surprised you do not do the engineers Job too :D
sometimes I do ;)
Slow progress how much advance 24hours .howhigh is the coal is it long wall or boared and pillar 😊
Not coal at all. 8.5x8.5 in most areas. Some.larger some smaller
This is a hydro tunnel no coal in site
Looks like a cold mine with those jackets on
Ya it's actually Christmas during the shotcrete section. I was left to spray while everyone on surface eating pizza 😆
AWW , I was hoping you'd have the remote camera a lot closer so we could actually watch the Face go POOF . LOL
yes me to. was not sure how close i could get lol. was not willing to sacrifice my camera at that time :)
@@JoryDion That was a way longer blast then the tunnel rounds I described above. And judging by the sparks off the pipe there that camera of yours was still in danger.
@@gragor11 Flyrock appeared to be coming back 35 - 40 metres . he calculated the risk of camera damage pretty well. :)
When I went to Mining School in Rossland we finally got to blast the round we had been working on all week. We were standing around outside the portal and the instructor kept telling us to stand aside, get back and then finally MOVE IT.
Someone got to push the handle of the detonator, setting the round off and a giant rock the size of a human head came flying out of the mouth of the portal at about 5 feet in the air, blew by us and proceeded across the landing and over the edge of the mountain.
We were all duly impressed and have stood well away ever since. That was something I had to work on later when I was hand bombing avalanche paths with 1KG sticks of water gel. Being 60 feet away from a lit charge was a bit hard to take.
@@markyes2041 I'll say.
What are you actually mining?
I'm not actually mining here in the sense of mineral extraction. This is a civil tunnel project so it's classified ad construction
nice face on 6 meter round dude
Found this channel and really liked the content. Former UK miner here. Very interesting watch the whole procedure from start to finish. Thanks Jory. Subscribe as well
UK coal?
@@TheMarshalMurat British coal. Uk coal was the private sector that took over some mines after closure of the pits
Look up square setting
why wasnt mesh used?
not sure honestly. I think it had something to do with the hydro electric nature of the project . We all thought we needed it but engineers proved us wrong
@@JoryDion this is amazing reference nonetheless amigo thanks heaps
Why not ground support installed first ?
Shotcrete is ground support apparently. Also can't spray over the bolts because they get grouted
Long process for a round. Why shotcrete every round??
This is a hydro service Tunnell. No plans for rehab. And additional construction later on
@@mitchtrochimchuk7494 Engineers 🤷♂. Civil project, spare no expense when its tax dollars paying for it
at 27 mins that reamer has a cool sound
also, how many of these can you guys do a day? It seemed like that took all day.
Cheers man
HUGS still???nnorm here.
hows the old man?
Retired and enjoying it. Hugs still yes
@@JoryDion i was like Whattt.they got a scaler??wow.it took 30 years.
@@jukesters123 ya this was in the Tunnell . We still don't have a scaler mining but power coard helps alot with cutting back on loose. Also row bolters are so big we don't have to go any where near open ground anymore
@@JoryDion Sweet.In my time 4 fatalities.this is what is needed there.