引水系统施工支洞封堵计算方法研究

Study on the Calculation Method of Plugging of Branch Tunnel in Water Diversion System Construction

水电站引水隧洞完工后,施工支洞需要在电站下闸蓄水前进行封堵,替代引水隧洞衬砌围岩。以实际工程为例,通过不同的计算方法,确定堵头的封堵长度,保证引水隧洞安全运行.

After the completion of the diversion tunnel ofhydropower station, the branch tunnel needs to be sealed before water storage in the dam of the power station to replace the surrounding rock lining of the diversion tunnel. Taking the actual project as an example, the length of plug is determined by different calculation methods to ensure the safe operation of the diversion tunnel.