Study On The Influence By Hydraulic Cave On The Stability Of Surrounding Rock In Large Span And Neighborhood Tunnel

To Chongqing Shuangbei tunnel engineering background, according to theShuangbei tunnel section size, surrounding rock, the support material parameters andgrouting parameters, application of large-scale general-purpose finite element softwareANSYS analysis of the different water pressure, melting chamber distributed indifferent locationsthe left side of the small spacing right tunnel when the tunnelsurrounding rock stability. The specific contents are as follows:①on the the Shuangbei tunnel gushing analysis of the curtain groutingreinforcement.②Measured water pressure of gushing water was amended to a more reasonablegushing water pressure.③using the finite element softwareANSYS different locations, different pressurecave located in the left side of the large span small spacing right tunnel surroundingrock displacement field around the two-hole stress field is calculated and analyzed.