石门水库除险加固工程实录

对石门水库病险库出现的典型工程隐患和病害进行了总结,主要有:大坝和坝基的稳定性、渗漏、溢洪道堵塞、干渠病害、水库附属结构的混凝土裂缝和碳化问题、大坝原设计标准较低问题和安全监测不足等等,分别采取了坝坡、坝基加固、混凝土防渗墙加固、疏浚和改造溢洪道、干渠拓宽和加固、混凝土加固、修补原监测和补充新的监测设施等工程处理措施,经实践检验,水库病害和隐患得到了有效控制。

A Memoir of the Risk Mitigation and Engineering Improvement for the Shimen Reservoir

This memoir documented potential engineering risks of the Shimen Reservoir.The typical issues currently identified are：overall stability of the dam and its base,seepage and leakage,spillway congestion,various defects of the main channel,cracking and carbonizing of concrete from accessary structures of the reservoir.Additionally,the standard used in the original dam design may be inadequate to current needs.The lack of sufficient safety monitoring during the service life may also be an adverse factor.Upon recognizing these engineering problems,a number of risk mitigation measures were implemented,including slope and base stabilization for the dam,cut-off wall strengthening,dredging,spillway improvement,widening and reinforcing of the main channel,concrete strengthening,repairing existing monitoring facilities and adding new ones,etc.Results illustrated that these engineering treatments have effectively controlled and minimized risk concerns.