巷道裂隙围岩稳定性影响因素的数值分析

›› 2005, Vol. 26 ›› Issue (10): 1565-1569.

巷道裂隙围岩稳定性影响因素的数值分析

王鲁明^{1, 3, 4}，赵坚^{1, 2}，万德连¹

1.中国矿业大学，江苏徐州 221008；2.南洋理工大学，新加坡 639798； 3.工程兵指挥学院，江苏徐州 221004；4.总参合肥创新工作站，合肥 230037

收稿日期:2004-09-02 出版日期:2005-10-10 发布日期:2013-12-30
作者简介:王鲁明，男，1962年生，博士研究生，副教授，主要从事地下工程稳定性和岩石动力学研究
基金资助:
国家973项目“灾害环境下重大工程安全性的基础研究”资助（No.2002CB412703）。

Numerical analysis of influencing factors in stability of cracked surrounding rock of a laneway

WANG Lu-ming^1,3,4, ZHAO Jian^{1, 2}, WAN De-lian¹

1.China University of Mining and Technology, Xuzhou 221008, China; 2.Nanyang Technological University, 639798 Singapore; 3.Engineer Command Academy, Xuzhou 221004, China; 4.Hefei Science and Technology Innovation Station of General Staff Headquarters, Hefei 230037, China

Received:2004-09-02 Online:2005-10-10 Published:2013-12-30

摘要/Abstract

摘要： 对具有单一裂隙的巷道围岩问题，用边界元分区算法沿裂隙面将围岩分区，对每个子域分别建立边界积分方程。在裂端配置1/4面力奇异单元，对张开或闭合的裂隙，既模拟了裂端位移的变化规律，又模拟了裂端应力1/ 的变化规律。以应力强度因子为指标，依据岩石断裂理论，系统地分析了裂隙几何位置、双向加载侧压比、裂隙面摩擦系数、裂隙长度等因素对围岩稳定性的影响，得出一些有价值的结论。该数值方法适用于分层介质中及复杂几何形状的巷道裂隙围岩稳定性分析。

关键词: 数值分析, 围岩稳定性, 边界单元法, 裂隙, 应力强度因子, 巷道

Abstract: To analyze the stability of a laneway’s surrounding rock with single crack, the multi-domain boundary element method is used. The sub-regions are obtained by dividing the whole region along the crack. The boundary integral equation is established in each sub-region. The traction singular quarter-point elements are collocated at the tip of the crack. For the opened or closed crack, not only the characteristic of in displacement but also the characteristic of 1/ in stress near the crack tip are represented. Qua the target, the stress intensity factor is calculated. According to the theory of rock fracture mechanics, the influences of the following factors on the stability of the cracked surrounding rock are analyzed systematically: geometric position of the crack, the ration of dual-pressure, the friction factor of the crack surfaces, the length of the crack. Some valuable conclusions are obtained. This numerical method is suitable for the stability analysis of laneways with complex geometric shape and laneways in layered medium.

Key words: numerical analysis, stability of surrounding rock, boundary element method, crack, stress intensity factor, laneway

中图分类号:

TU 457

王鲁明，赵坚，万德连, . 巷道裂隙围岩稳定性影响因素的数值分析[J]. , 2005, 26(10): 1565-1569.

WANG Lu-ming , ZHAO Jian , WAN De-lian,. Numerical analysis of influencing factors in stability of cracked surrounding rock of a laneway[J]. , 2005, 26(10): 1565-1569.

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