【摘要】 针对岩土工程中的锚固支护,研究了数值流形方法中锚固支护模拟问题。在原数值流形方法源程序基础上开发了锚固支护模块,并用算例验证了其合理性。运用该方法对某层状结构岩体中的地下洞室围岩开挖变形问题进行了研究。结果表明,数值流形法在层状结构岩体地下洞室开挖时,能反映围岩中软弱层面两侧岩体的不连续错动特征;锚固支护后,围岩位移分布趋向均匀,位移量有所减少,软弱层面两侧岩体的非连续错动变形量减小效果显著。更多还原

【Abstract】 According to the rock reinforcement in geotechnical engineering,the study on rock anchorage simulation by numerical manifold method(NMM) has been conducted;and the corresponding numerical simulation blocks have been compiled on the basis of the original code.Two examples are used to validate the correctness of the newly developed model.Based on the works accomplished above,the excavation of an underground opening with laminated surrounding rock mass is simulated by NMM;and the deformation characteristics are analyzed.The results show that the displacements on the two sides of the weak planes in the upper part of the surrounding walls behave discontinuously,which are reasonable compared to the actual situation.When the surrounding rock is reinforcedi,ts displacement tends to be more uniforma,nd decreases to some extend.On the two sides of the weak plane the discontinuous deformation of the surrounding rock decreases more distinctly.更多还原