Construction method of granite geological underground continuous wall trench

Abstract

The embodiment of the invention provides a construction method of a granite geological underground continuous wall trench. Through a hole position placing step, a step of using a down-the-hole drill to construct a guide hole, a step of using a hydraulic grab bucket grooving machine to grab a soil layer, a step of using a pile washing machine to wash rocks and a step of using a double wheel trenchmilling machine to directly mill the rock to form a trench, construction operation is carried out; by using the down-the-hole drill to construct the guide hole first and then using the hydraulic grabbucket grooving machine to clean the soil layer, a novel underground continuous wall combined trench forming process is created on the basis of a traditional construction method; and therefore, on theone hand, difficult problems of hammer deviation, drilling tool jamming, low trench forming efficiency and the like of high-strength inclined plane granite formation underground continuous wall construction are solved; and meanwhile, the safety, quality and progress of the underground continuous wall construction are guaranteed; and the effect is improved, and the cost is saved.

Description

technical field [0001] The invention relates to a construction method for groove-forming an underground continuous wall in granite geology. Background technique [0002] Underground diaphragm walls are widely used in our country. Under the geological conditions of sloping granite above 100Mpa, the construction methods for forming grooves in underground diaphragm walls mainly include: one is to use the treatment method for inclined hard rock formations, including filling stones at the inclined places , pouring high-strength concrete, etc., and then directly forming grooves with an impact drill, this method is costly and has poor effect on dealing with partial holes; the other is the method of using an impact drill to cooperate with a groove forming machine, which is prone to partial hammer and drill sticking , the construction period is long, the efficiency is low, and the quality of the grooves formed by the ground wall is difficult to guarantee. [0003] Therefore, under t...

AI Technical Summary

Problems solved by technology

[0002] Underground diaphragm walls are widely used in our country. Under the geological conditions of sloped granite above 100Mpa, the construction methods of underground diaphragm walls into grooves mainly include: one is to use the treatment method for inclined hard rock formations, including filling stones at the inclined places , pour high-strength concrete, etc., and then use the impact drill to form the groove directly. This method is costly and the effect of dealing with the partial hole is poor; the other is the method of using the impact drill to cooperate with the groove forming machine. , the construction period is long, the efficiency is low, and the quality of the grooves formed by the ground wall is difficult to guarantee