In lingt of the anti-permeation performance problem of soft rock tunnel under the condition of shotcrete in glide structure area of West Henan

and from the basic theories of cube laws

combined with characteristics of laminar flow of ground water

and according to the different constructions condition

the analogue experiments of permeation properties of cementation plane are carried out; and homologous calculation formula are deduced. By comparison and analysis of the result

we can clearly understand the process and the mechanisms of interaction between various influence factors such as rock character

roughness

interface agent and large fluting

etc. It is concluded as follows:(1)as soft plane in constitution

permeation performance of cementation plane is far greater than that of rock mass and concrete; in the same

permeation performance of cementation plane of soft rock with coarse grain is also greater than that with fine grain; (2) restriction of roughness of rock mass

utilization of interface agent and set appropriate fluting on cementation plane can all increase its anti-permeation performance; and(3)load conditions of rock mass influence anti-permeation performance of cementation plane to a great extent.