某大坝渗漏勘察分析与防渗处理措施  

Survey-analysis of seepage problem of a dam and anti-seepage treatment measures

作　　者：王旺盛[1] 罗飞[1] 王晓欣[1] 史存鹏[1] 

机构地区：[1]长江三峡勘测研究院有限公司(武汉),湖北武汉430074

出　　处：《人民长江》2015年第4期45-50,共6页Yangtze River

摘　　要：大坝渗漏问题一直是水利工程中的热点和难点问题,渗漏勘察往往需要投入大量的人力、财力和技术。以某大坝渗漏勘察为例,研究了该水库坝址区的地层岩性、地质构造、水文地质、渗漏体系及渗漏概况,并提出了相应的勘察方法及手段。以坝顶钻孔为工作平台,采用地下水位观测、示踪试验、孔内彩电观察、压水试验等勘察手段对大坝渗漏部位进行分析与定位,最终在平面及剖面方向上确定了大坝渗漏范围。根据勘察结果以及渗漏程度对渗漏部位进行分区,并提出了相应处理措施及建议。工程实践表明,所采取的勘察方法和手段是行之有效的,可为类似工程勘察提供参考和借鉴。The problem of reservoir seepage is a hotspot and difficulty in water conservancy projects, much manpower, finan- cial and material resources needs to be devoted for seepage treatment. Based on an engineering survey example, the lithology, ge- ological structure, hydrogeology, seepage system and situation in the dam area are researched and the correspondent survey meth- od and means are put forward. In practical survey, the dam top was employed as the drilling platform, and the survey methods of groundwater observation, tracer test, color TV observation in drilling hole and water pressure test etc. were adopted to analyze and determine the seepage position, and the dam seepage scope in plane and vertical plane was determined. According to sur- veyed results and the seepage degree, the seepage scope was divided into different sub - zones and the correspondent treatment measures and suggestions were put forward. The results show that the seepage survey methods and means are effective and can provide a reference for similar engineering survey.

关 键 词：大坝渗漏 地下水 示踪试验 孔内彩电 渗漏勘察 

分 类 号：TV698[水利工程—水利水电工程]