大采高开采工作面煤壁稳定性随机分析  

Stability analysis of coal wall in full-seam cutting workface with fully-mechanized in thick seam

作　　者：郝海金[1] 张勇[1] 

机构地区：[1]中国矿业大学(北京校区)资源与安全学院,北京100083

出　　处：《辽宁工程技术大学学报（自然科学版）》2005年第4期489-491,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金重点资助项目(59734090)

摘　　要：采用边坡稳定性研究的成果,用概率分析方法,从理论上对大采高工作面煤壁发生片帮的原因进行了研究,建立了大采高工作面煤壁滑面力学模型,分析了影响工作面煤壁稳定性的各种相关因素,指出影响工作面片帮发生概率的因素主要有:不连续面的多少和方向、不连续面上粘聚力和内摩擦系数、直接顶对煤壁的压力及它们之间摩擦系数。而且对各因素对煤壁片帮产生的影响进行了定量分析,从理论上解释了工作面煤壁发生片帮的原因,为制定合理的工作面防片帮措施提供了参考。Referring to the research achievements in slope stability, the causes of side fall of full-seam cutting mining workface are discussed by probabilistic study method. The mechanical model of slope face of coal is proposed. The paper studies influencing factors and their effect on coal wall stability The factors affecting the wall slope of the coalwall are the number and the direction of fissures in coalwall, cohesion and coefficient of internal friction in fissures, the pressure of coalwall posed by immediate roof and the friction between them. The paper explains the reason about coal wall slope. In addition, the paper offers the theoretic basis for measures used to prevent coal wall slope.

关 键 词：大采高 稳定性 滑移 内聚力 

分 类 号：TD325[矿业工程—矿井建设]