龙滩巨型地下洞室群锚固效应分析  

Analysis on anchor effect of Longtan giant underground houses

作　　者：杨为民[1] 李术才[1] 陈卫忠[2] 武科[1] 

机构地区：[1]山东大学土建与水利学院岩土与结构工程研究中心,山东济南250061 [2]中国科学院武汉岩土力学研究所,湖北武汉430071

出　　处：《山东大学学报（工学版）》2004年第2期111-116,共6页Journal of Shandong University（Engineering Science）

基　　金：国家自然科学基金 (5 993 190 )重点资助

摘　　要：广西龙滩水电站地下厂房是典型的大跨度、高边墙地下洞室群 ,其所在位置工程地质条件复杂 ,围岩为陡倾角层状结构岩体 ,且层间错动较发育 ,断层较多 .主厂房和调压井的高边墙以及洞室间岩柱的稳定性分析 ,是围岩锚喷支护设计的关键 .本文采用快速拉格朗日分析法 (FLAC)对洞室的开挖进行了模拟 ,分析了毛洞开挖和加锚开挖两种工况 ,得出了一些有益的结论 .The underground plant of Lontan hydroelectric project in Guangxi Province is the typical large-span and high side wall cavern group. The geological condition is very complex. The strata are highdipping and the faults are developed. The key for surrounding rock support design is the stability analysis of machine hall and surge tank's side wall and the rock pillar between caverns. In this paper, the excavation process of caverns is simulated by Lagrangian method(FLAC). Two cases including support scheme and without support scheme are analyzed. Finally some useful conclusions are given.

关 键 词：围岩 锚杆 开挖 洞室 

分 类 号：TU271[建筑科学—建筑设计及理论] TU923