北疆某碾压混凝土坝上下游面防渗体结构的比选  

Comparative selection of impervious structures for upstream and downstream faces of a roller compacted concrete dam in North Xinjiang

作　　者：赵成先[1] 罗文灵[1] 王哲[1] 

机构地区：[1]新疆额尔齐斯河流域开发工程建设管理局,新疆乌鲁木齐830000

出　　处：《水利水电技术》2012年第7期45-48,共4页Water Resources and Hydropower Engineering

摘　　要：地处北疆严寒地区的某水利枢纽主坝为全断面碾压混凝土重力坝,为保证坝体上下游面防渗结构的安全可靠,进行了大量的试验研究和现场的工艺试验。试验证明二级配碾压混凝土与变态混凝土相结合的防渗结构型式具有施工方便、不干扰碾压混土坝的施工和造价低廉等优势,经综合考虑选定二级配碾压混凝土与变态混凝土相结合的防渗结构型式作为坝体上下游面防渗体。蓄水实践证明:坝体上下游面采用这种防渗体型式是成功的。The main dam of a water control project located in the cold region of the North Xinjiang is a full-section roller compacted concrete （RCC） dam; for which a large amount experimental studies and in-situ tests on the construction tech- nology are made, so as to ensure the safety and reliability of the impervious structures for both the upstream and downstream faces of it. The experiments show that the impervious structure built with the combination of both the two-graded roller com- pacted concrete and the metamorphic concrete has the merits such as convenient construction, no interferences on the con- struction of the RCC dam, lower construction cost, etc. , and then it is selected to be the impervious structures for the up- stream and downstream faces of the dam. The impounding practice demonstrated that the adoption of this kind of the imper- vious structure is quite successful.

关 键 词：碾压混凝土坝 二级配变态混凝土 物理学性能 防渗结构 北疆 

分 类 号：TV642.2[水利工程—水利水电工程]