大柳树坝址岩体松动机制物理模拟研究  

Physical simulation of dynam-relaxed mechanism of rock mass at Daliushu dam site

作　　者：王勇智[1] 戚炜[1] 门玉明[1] 彭建兵[1] 

机构地区：[1]长安大学地质工程系,陕西西安710054

出　　处：《西安科技大学学报》2004年第3期305-309,共5页Journal of Xi’an University of Science and Technology

基　　金：甘肃省科学技术委员会资助项目(G01-0016)

摘　　要：大柳树坝址区存在大面积、大范围的岩体松动现象。为进一步研究岩体松动的成因机制,在详细调查区域地质背景条件及区域地震动力作用基础之上,提出了地震动力作用与岩体松动现象的内在联系,同时又通过模拟试验进一步证明大柳树坝址区存在的大深度、大范围岩体松动与历史上该地区发生的强烈地震具有密切关系。因此在目前的工程地质条件下,一旦发生较大规模的地震活动,坝址区所遭受的破坏程度会更大,对拟建的水利工程将产生严重威胁。There is a large scale of dynam-relaxed rock mass lies in DaLiushu dam site of Yellow River. Geostatic stress released, structural planes opened and density reduced are the main characteristics of dynam-relaxed rock mass. In order to study the mechanism of the dynam-relaxed rock mass,geological background conditions and earthquake dynamic effects of the region round Daliushu dam site are investigated. The internal relations between earthquake dynamic effects and dynam-relaxed rock mass are confirmed. A conclusion is given by the dynamic simulation test. Consequently once a severe earthquake happened at present engineering geological conditions,the rock mass of dam site will be further destroyed. That would be threat to the new water conservancy at DaLiushu dam site of Yellow River.

关 键 词：大柳树坝址区 岩体松动 地震动力作用 物理模拟 

分 类 号：TV640.39[水利工程—水利水电工程]