rock excavation
rock excavation
(OP)
Does anyone have any expirience using one of these expanding liquid mixtures such as
The Cracker from u.S. Anchor Corp. or
Bristar from Demolition Technologies Inc.
I have a pipeline project were we have encountered hard rock, but blasting is not allowed due do some old pipe adjacent to the new line.
What other methods are used other than just hoe ramming for ever.
The Cracker from u.S. Anchor Corp. or
Bristar from Demolition Technologies Inc.
I have a pipeline project were we have encountered hard rock, but blasting is not allowed due do some old pipe adjacent to the new line.
What other methods are used other than just hoe ramming for ever.





RE: rock excavation
Depending on rock hardness, you could look at a milling machine on the end of a backhoe. There are different sizes and mill a trench with vertical sides. Also depends on the trench width required.
I can find a name if you do not know of them.
StephenA
RE: rock excavation
We looked into a large trencher which was used in the coal minds, but the mobalization is rather high.
As for the expansive cements. What brand did you uses and how close did you have to put the holes?
RE: rock excavation
This is one web site that has a rock grinder tool as I guess that you are in the US.
http://www.langtool.com/products.html#ltc_rock_grinder
Best regards
StephenA
RE: rock excavation
RE: rock excavation
I used it in South Africa and Hong Kong so brand name may not help. I think that it was a Japanese make in HK.
Presumably the old pipe will be in a blasted trench so the location should be well defined and if you are around 1 to 1,5m away, you should be OK using the rock trencher unless it is a very weak pipe.
StephenA
RE: rock excavation
http://www.hydrorock.com/
Best regards
StephenA