摘要
分析了顶板暴露面积、矿柱留设尺寸、开采深度、围岩性质、地质构造、工程扰动等因素对采空区稳定性的影响。提出了基于"复合应力拱"的采空群稳定性分析模型,并采用颗粒流数值模拟方法对具体工程案例进行了计算验证,结果与复合应力拱理论具有良好的符合性,表明这一方法适用于分析采空塌陷等复杂的、不连续体的力学过程,对矿山的安全生产具有一定的指导意义。
Factors affecting goaf stability, such as exposed roof area, pillar size, mining depth, wall rock properties, geological structure, disturbance of engineering activities, were analyzed. A model was proposed for analyzing goaf group stabilities based on the theory of complex stress arch, and it was validated by a real case with the method of particle flow simulation. The simulation results showed a good coherence with the complex stress arch theory. This method is proven to be applicable for analyzing the mechanic process of goal collapse with complexity and discontinuity, which is of great significance for guiding safety production in mines.
出处
《矿冶工程》
CAS
CSCD
北大核心
2010年第1期1-4,8,共5页
Mining and Metallurgical Engineering
基金
国家"十一五"科技支撑计划课题(2007BAK24B01-5)
中国安全生产科学研究院基本科研业务费专项资金项目(2007JBKY04)
关键词
采空区
塌陷
颗粒流
数值模拟
复合应力拱
goal
collapse
particle flow
numerical simulation
complex stress arch
