【作者】 沈振中； 甘磊； 苗喆；

【Author】 Shen Zhenzhong~1,Gan Lei~1,Miao Zhe~2 (1.College of Water Conservancy and Hydropower Engineering,Hohai University,Jiangsu Nanjing 210098,P.R.China;2.Northwest Hydro Consulting Engineers,China.Hydropower Engineering Consulting Group Co.,Shanxi Xian 710065,P.R.China)

【机构】 河海大学水文水资源与水利工程科学国家重点实验室； 中国水电顾问集团西北勘测设计研究院；

【摘要】 覆盖层上混凝土面板堆石坝,其坝体和坝基防渗系统的完整性直接关系到坝体的运行安全。根据察汗乌苏水电站工程的具体情况,建立了模拟防渗墙、帷幕、排水布置不同方案下的数值分析模型,首先主要论证设计防渗排水系统的有效性,了解稳定渗流期坝区渗流场;其次,在现有防渗墙、帷幕、排水布置方案的基础上,对止水系统部分失效工况进行计算分析,研究周边缝和面板缝部分止水失效后渗漏水对大坝的渗流状态的影响;最后,确定最优的防渗墙、帷幕、排水布置方案。更多还原

【Abstract】 The safe operation of CFRD which builts on deep overburden depends on the integrity of anti-seepage system. According to the actual conditions of Chahanwusu hydropower station project,the numerical analysis models on different damage and failure of water- stops are established.The effectiveness of the design anti-seepage and drainage system is demonstrated,meanwhile the dam seepage field of stable seepage period is obtained.Afterwards,on the basis of the current cut off wall,curtain,drainage arrangement plan,some failure conditions shut-off of water system is calculated and analysed,so as to analyze how damage and failure of water stop in peripheral joint and slab joint affect seepage gradient, wetted area and seepage discharge inside the dam.Finally,the optimal arrangement plan of concrete cut off wall, curtain,drainage is determined.更多还原