摘要
竹寿水库为一座粘土心墙石渣坝，原设计心墙采用砾质粘土、两侧为颗粒滤层和过滤层。鉴于砾质粘土的透水性较大，同时颗粒滤层筛选困难、工程造价昂贵，故采用土工合成材料作防渗和排渗处理。针对竹寿水库心墙石渣坝的实际条件，通过顶破强度分析，选定了复合土工薄膜的规格，并进行了室内试验论证。同时，采用应力场和渗流场的耦合方程进行了计算分析论证，给出了相应的数值。此外，还对心墙粘土的颗粒滤层和织物滤层进行分析，选定了满足该心墙土料的织物滤层规格，并由滤层系统试验给予论证。按上述试验、计算分析，提出了竹寿水库心墙堆石坝的断面结构型式。
Owing to the shortage of AB clayey material for the core of the Zhushou dam, in the preliminary design D2 earth material is adopted instead, which is less impervious. However, from the Point of view thatthe core should be made impervious as much as possible, a scheme of using the composite geomembraneplaced on the upstream side of the core and combined with the gravel clayey core of D2 material to form theantiseepage structure is proposed. By analysis, calculation and experiment,the composite geomembrane usedcan meet the design requirements.
出处
《水力发电》
北大核心
1994年第8期41-44,共4页
Water Power
关键词
心墙
堆石坝
土工合成材料
水库
geomenbrane filter, gravel clayey core dam, coupling equation
