裂隙岩体隧道施工关键块体识别数值方法  

Numerical Method of Key Block Identification for Jointed Rock Tunnel Construction

作　　者：王述红[1] 杨勇[1] 王洋[1] 张少林[1] 郭牡丹[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《地下空间与工程学报》2009年第5期976-979,995,共5页Chinese Journal of Underground Space and Engineering

基　　金：国家高技术研究发展计划项目(863计划;2007AA06Z108);国家973基础研究计划项目(2007CB209405);教育部留学回国人员科学研究基金(SRFforROCS;SEM:2003821178);国家自然科学基金项目(50674025和10872046);中国博士后基金(2005038253)

摘　　要：基于块体理论及相关文献,在拓展"有向性"原理基础上提出裂隙岩体隧道施工诱发关键块体识别三维数值方法。通过三维结构面网络模拟、结构面交线及封闭回路分析、块体搜索、三维数值模拟滑落等过程,形成全空间块体拓扑搜索的三维数值方法。算例分析及正确性检验结果表明,该方法可以对众多结构面切割下,形成的数量多、形态异常复杂的块体(包括凹形体)进行正确有效搜索,显示该方法具有较强的通用性和可靠性。Based on the block theory and related literatures,a three-dimension numerical method of block identification during the jointed rock tunnel construction is proposed,with expanded ＂Anisotropy＂ principle.Block topological space search method in three dimension is formed through the processes about simulation of three-dimension structure network,analysis of structure intersecting curve and closed loop,block search and the three-dimension numerical simulation of slide,etc.In this method,numerous structure surfaces can be cut down and then a large quantity of complicated blocks l including the concave form） are formed. It is shown by example analysis and accuracy test results that the method is effective in search work with commonality and reliability.

关 键 词：岩石力学 结构面网络模拟 三维空间块体 块体切割 块体理论 

分 类 号：TU45[建筑科学—岩土工程]