缓倾状软硬互层裂隙坝基岩体的渗流分析  

Seepage Analysis of Dam Foundation with Low Dip Soft-hard Interbedding Fissures

作　　者：卢刚[1] 周志芳[1] 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098

出　　处：《水力发电》2007年第9期12-15,共4页Water Power

基　　金：国家自然科学基金资助项目(50579012)

摘　　要：阐述了缓倾软硬互层状岩体中裂隙发育的一般规律,在这个基础上采用双重介质模型对层状坝基渗流进行了模拟,讨论了软岩层中切层裂隙的发育以及嵌入软岩帷幕对坝基渗流场的影响。分析可知,当软岩层中不存在可以形成上下游贯穿通道时,延伸嵌入软岩的帷幕对坝基渗流的作用是有效的;当存在通过切层裂隙形成的上游贯穿通道时,延伸嵌入软岩的帷幕对坝基渗流的作用则是有限的。The general rule of fissure development in low dip soft-hard interbedding rock mass is described, and then based on this the dam foundation seepage is simulated with dual-medium model, and the influence of unstratabound fissure and waterproof curtain is discussed. Through analysis, we can conclude that when the unstratabound fissure in the soft layer cannot form the connected pathway, the waterproof curtain that extended into soft layer is validity; and when the connected pathway can be formed, the effect of the waterproof curtain is finite.

关 键 词：互层状岩体 双重介质 切层裂隙 帷幕 

分 类 号：TU470.3[建筑科学—结构工程]