Application of High Density Electrical Method and Acoustic Testing in Water Conveyance Tunnel Survey
The classification of surrounding rock has strong guiding significance for the design and construction of tunnels.This paper calculates the integrity index of the rock mass in the tunnel body section through acoustic testing,compares the apparent resistance characteristics obtained from high-density electrical exploration,and determines the basic quality of the rock mass in the longitudinal section of the tunnel.By conducting water pressure tests,the permeability of rock layers is obtained.Taking into account five major factors,including rock strength,rock integrity,structural plane status,groundwater status,and main structural plane attitude,a total score of surrounding rock is obtained to guide the classification of surrounding rock types.
high density electrical methodsound wave testingrock integrity indexwater pressure testsurrounding rock category
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