The invention discloses a diaphragm wall construction
bedrock identification method. The diaphragm wall construction
bedrock identification method comprises the following steps: preparation operation; identification operation: if the slotted hole is drilled along the existing
drill hole, determining the
bed rock
surface depth of the slotted hole based on the
bed rock depth disclosed by the
drill hole; if the slotted hole is located between the two
drill holes, the final
bedrock surface depth D is determined according to the regional
lithology condition on the basis of the bedrock surface depths D1, D2 and D3; wherein the bedrock
surface depth D1 is a calculated value, and the bedrock surface depth D2 is determined based on the characteristics of the rock
slag sample; the
bed rock surface depth D3 is determined based on the drilling condition. According to the method for identifying the diaphragm wall construction bedrock, the bedrock surface depths D1, D2 and D3 are obtained through site construction, the bedrock surface which is relatively deep and fits the reality is selected by comparing the numerical values of the three, and a certain
safety margin is reserved for the rock entering depth of the bedrock. Therefore, the anti-seepage wall construction bedrock identification method is comprehensive in consideration of influence factors, identification time is saved, the rock entering accuracy of the anti-seepage wall is enhanced, and
engineering risks are reduced.