【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。更多还原

【Abstract】 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.更多还原