摘要
针对工作面瓦斯尾巷难以维护的一类工程问题,采用三维有限差分法模拟研究了弱化顺槽顶板岩层对屯兰矿综采工作面采动侧向应力分布的改善规律。研究结果表明,随着对顺槽顶板岩石弱化程度的提高,工作面侧向支承应力峰值降低,影响范围减小。即工作面侧向巷道的稳定性将随着对顺槽顶板硬岩层的弱化程度提高而得到有效改善。
To counter the engineering difficult to maintain the gas tail gate of the working face,the influence of weakening the roof rock strata in gateway to the side abutment stress distribution in the fully mechanized mining face in Tunlan mine have been studied by using three-dimensional explicit finite-difference program. The conclusion is that the peak value of the side abutment stress in the mining face is dropped down and its influence range is reduced with the increasing of the weakened degree of the gateway roof hard strata.So that the side gateway stability in the mining face will be effectively improved with the increasing of the weakened degree of the gateway roof hard rock strata.
出处
《太原理工大学学报》
CAS
2004年第3期294-298,共5页
Journal of Taiyuan University of Technology
基金
教育部高等学校骨干教师资助计划项目(J20046)
山西省青年科学基金资助项目(961027)
关键词
弱化顺槽顶板
采空区模拟
工作面侧向应力
三维数值模拟
weakening roof of gate
simulation of caved waste
side stress of working face
3-D numerical simulation
