前坪水库灌区工程任庄隧洞施工方案比选及衬砌结构设计OA

The water conveyance tunnel is an important structural form of hydraulic structures.The Renzhuang Tunnel of the Qianping Reservoir Irrigation District Project is an unpressurized tunnel,where the flow velocity of water is relatively low.The tunnel is designed with a certain bottom slope and does not bear the internal water pressure.The lining structure mainly withstands the pressure from the surrounding rock and groundwater seepage pressure.The tunnel body is relatively long and passes through rock formations with different geological conditions.Based on the actual geological conditions of the Renzhuang Tunnel,this paper compares different construction schemes,finally determines a reasonable construction scheme,and elaborates on the design concept of the lining structure of the Renzhuang Tunnel in detail.