Method and apparatus for cutting a trench through rock-like material
Apparatus and method for digging deep trenches having parallel generally vertical walls in solid rock such as limestone. The apparatus includes a transport means for providing support and for moving along a traverse on the earth's surface while cutting a trench along that traverse. The transport carries a boom which may be articulated into the ditch being cut and a pair of rock cutterwheels carried on the end of the boom and assembled so that the outermost cutter teeth are wider than any other part of the boom assembly. The apparatus further includes means for aligning the flat surfaces of the rock cutter wheels parallel to and between the walls of the ditch and for maintaining alignment of the wheels with the trench as the transport moves along the traverse so that repeated cuts may be made to extend the trench to any desired depth. The trenching method includes the cutting of a pair of narrow slots by means of the rock saws as the transport moves along the traverse and then removing material between the slots. The method further includes repositioning the cutter wheels in a previously cut trench to make second cuts extending the depth of the trench to a preselected depth.
- Assignee:
- H. B. Zachry Co.
- Patent Number(s):
- US 4542940
- OSTI ID:
- 6034192
- Resource Relation:
- Patent File Date: Filed date 13 Dec 1979; Other Information: PAT-APPL-103231
- Country of Publication:
- United States
- Language:
- English
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