基于球颗粒DDA法的巷道围岩破坏特征分析应用初探  

Application and analysis of failure characteristics of roadway surrounding rock based on spherical DDA method

作　　者：赵强[1,2] 王龙 焦玉勇 黄刚海 ZHAO Qiang;WANG Long;JIAO Yuyong;HUANG Ganghai(State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Grid Electric Power Company Economic and Technological Research Institute of Shandong, Jinan 250021,China;Faculty of Engineering,China University of Geosciences (Wuhan),Wuhan 430074,China;School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]中国科学院武汉岩土力学研究所,湖北武汉430071 [2]中国科学院大学,北京100049 [3]国家电网山东省电力公司经济技术研究院,山东济南250021 [4]中国地质大学(武汉)工程学院,湖北武汉430074 [5]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《中国矿业》2019年第6期111-116,共6页China Mining Magazine

基　　金：国家重点基础研究发展计划(973课题)资助(编号:2014CB047101);国家自然科学基金项目资助(编号:41772328)

摘　　要：非连续变形分析法(DDA)在岩土工程问题分析中应用广泛。基于球颗粒DDA法的计算原理,以小屯煤矿运输巷道为研究对象,模拟了煤矿巷道顶板裂隙发育、贯通直至破坏的全过程,结果表明:球颗粒DDA法再现的巷道顶部裂隙产生-扩展-破坏特征,与实际裂隙带发育情况吻合,球颗粒DDA在巷道围岩稳定性分析方面具有应用价值。本文研究成果对非连续变形分析方法的应用扩展具有重要意义。The discontinuous deformation analysis method(DDA)has been widely applied in geotechnical engineering analysis.Based on the calculation principle of spherical particle DDA method,the whole process of roof crack development,penetration and failure in Xiaotun coal mine is simulated.The results show that the characteristics of roof crack generation-propagation-failure reproduced by spherical particle DDA method coincide with the actual development of fracture zone.Spherical particle DDA has practical value in the stability analysis of surrounding rock of roadway.The research results in this paper are of great significance for the extension of the application of discontinuous deformation analysis methods.

关 键 词：非连续变形 球颗粒DDA 裂纹扩展 裂隙带 数值模拟 

分 类 号：TD853[矿业工程—金属矿开采]