Patent ID: 6139225
Filing Date: 2000-10-31
Classification: E02D

Abstract:
A method for building an underground continuous wall, comprising the steps of:placing a chain cutter carried by a running carriage obliquely in ground by sliding the chain cutter in an oblique direction by a hydraulic cylinder;moving the running carriage along a specified course over the ground, said running carriage carrying the chain cutter fixedly held in the oblique direction in the ground, said chain cutter being driven to form a first continuous slanting trench and a second continuous oppositely slanting trench;excavating the first and the second continuous slanting trenches so as to form an inverted V cross section separated at an apex thereof;pouring a wall material into the first and second continuous trenches in order to build two continuous walls with an inverted V cross section; andplacing a slightly arcuate roof bridging the apex of the two continuous walls with the inverted V cross section above an underground construction.