:: :: Moving boulders

people online in the last 1 minutes - 0 members, 0 anon and 0 guests. (Most ever was 34 at 15:22:43 Fri Sep 10 2021)

Offline
149 posts
Reply

Moving boulders ( 22:22:39 WedDec 5 2007 )

I have a claim with sheer walls on each side. No place for a winch. So...winch platform or lift bags??

Lets hear your opinion.

Too much current for lift bags??
[2 edits; Last edit by micropedes1 at 23:15:08 Thu Dec 6 2007]

AuTSaurus

Offline
98 posts
Reply

Re: Moving boulders ( 07:27:47 ThuDec 6 2007 )

micropedes 1, I know this doesn't help with your need to know about the platform vs. lift bags, but after seeing your picture, I have to ask; In the area pictured, How deep is the water?, and, How far is the visibility once you are under?

What river is that?

Greg

micropedes1

Offline
149 posts
Reply

Re: Moving boulders ( 14:41:09 ThuDec 6 2007 )

Klamath river in northern CA. Seattle creek canyons. Water depth is 25 feet minimum. Narrow channel forces all the flood waters thru a real small place. Rocks not blown out tend to be larger than average.

I don't want to move the flat slabs down there very far. Just roll them over. 8K winch alone won't budge 'em.

And that green water is what you get every summer on the Klamath. Can still see enough to dredge, though.

ratled

Offline
462 posts
Reply

Re: Moving boulders ( 23:43:29 ThuDec 6 2007 )

How about something like this?

ratled

http://www.goldgold.com/stories/movboulderfloat.htm

micropedes1

Offline
149 posts
Reply

Re: Moving boulders ( 15:30:46 FriDec 7 2007 )

Ratled, I have one of those. But it doubles as a dredge platform, too. The problem is that I don't have enough lift with platform alone to shift those big boulders. I need just a bit more to roll them over.

I can just see one of those boulders sliding into my dredge hole and sucking my dredge down with it!

Same as this one with heavier frame.

doug_robinson

Offline
31 posts

Re: Moving boulders ( 17:34:03 FriDec 7 2007 )

looks like glens claims how about A jetski lol

micropedes1

Offline
149 posts
Reply

Re: Moving boulders ( 18:49:02 FriDec 7 2007 )

Thanks, Doug. That worked so well last year that I bought one, too. Ought to be just right for positioning dredges. But the price was not quite as good as yours.

UncleMark

Offline
531 posts
Reply

Re: Moving boulders ( 22:12:38 FriDec 7 2007 )

G,

Afew questions.

First, are these boulders sitting right on bedrock or are they sitting on/in material?
Are there any outcroppings or other slabs that you could use to attach a pulley to change direction from a lift to a drag??
Mark

micropedes1

Offline
149 posts
Reply

Re: Moving boulders ( 18:33:09 SatDec 8 2007 )

Mark, some of the slabs may be resting on bedrock. Others seem to be propped up end-ways. Looks kinda like a logjam only it is made out of rock slabs. There are actually a few boulders on one side that might serve as an anchor for smaller stuff. They sit right at the low water mark, are rounded and slightly undercut. Would not take much to roll them off into the river once they shift.

The only solid anchor is a bedrock point a couple of hundred yards downstream. It is a possibility, but it seems like an awfully long pull. Was hoping for something easier.

pascalfortier

Offline
138 posts

Re: Moving boulders ( 01:48:13 SunDec 16 2007 )

C'mon Glen Moving a dredge by hand is fun. It only took us half-day : )

Pascal

Real49er

Offline
228 posts
Reply

Re: Moving boulders ( 19:06:45 TueDec 18 2007 )

In a situation like this it is possible to use a cargo parachute to capture the force of the river which can easily move your boulders. BUT!!! it is a very dangerous and scarry method, that if not perfectly thought out and executed could prove devastating. You would need to set up your lashings on the boulder to be moved in such a way that they would be released after the boulder moved the desired amount, and also set up your tripline to collapse the chute just after that, or you would probably never recover it intact. The whole thing would need to be set up in such a manner as to be activated remotely, and you don't want to be in the way of any part of the system once those hundreds of tons of water start doing their work.

I can't say that I recommend this method, only that the energy to do the work desired is available in this way, without resorting to distant or precarious anchors.

Total Members: 4903

Can't start a new thread. (Admins Only)

Can't start a new poll. (Admins Only)

Can't add a reply. (Admins Only)

Can't edit your posts.(Everyone Registered)