摘要
文章主要介绍了三峡工程可行性研究阶段有关渗流问题的研究成果。主要包括两大部分:1.裂隙岩体渗流问题。以船闸区岩体为对象进行了系统地研究探索。分析指出,对高边坡岩体采取排水措施是必要且有效的。2.围堰渗流问题。研究了多种防渗材料及断面形式,推荐了水下部分防渗墙、水上部分为土工膜的防渗方案。同时还对围堰基础的渗透稳定性、反滤层进行了研究,分析了二期围堰的三维渗流状态,指出需注意的问题。
Results of studies on seepage flow problems of the Three Gorges Project at feasibility study stage are presented in this paper. There are two aspects of results. 1. studies on seepage flow in frac- tured rock mass. The high rocky slopes by ship locks are taken as an example to be systemationlly studies, and the results indicate that drainage measures are necessary and efficient for the stabilization of high rocky slopes. 2. Studies on seepage flow in cofferdam. Several kinds of seepage proof materials and profile patterns of cofferdams are comparatively studied. The recommeded anti-seepage scheme for the cofferdam is that seepage proof walls are used underwater and geomenbrane is used above water. Also, in the paper, cofferdam foundation seepage stability and filters aer studies, three-dimensional seepage field in cofferdam of the Second stage is analyzed, and considerable problems which deserve attention are presented.
出处
《长江科学院院报》
CSCD
北大核心
1992年第A06期99-106,共8页
Journal of Changjiang River Scientific Research Institute
关键词
渗流
裂隙岩体
排水
围堰
土工膜
seepage flow
fractured rock mass
drainage
cofferdam
geomembrane
