摘要
理论分析了顶煤的受力体系和变形破坏的演变过程,针对兴隆庄矿1308综放面的地质条件,通过数值计算,分析了机采高度改变对工作面煤体受力的影响。当机采高度增大时,煤体塑性破坏区域增大,顶煤破碎严重,同时煤壁片帮冒顶的几率增高,应增加相应的防治措施。
Theoretical analysis on stress system of top-coal and evolvement process of deformation failure, according to geological conditions of XingLongZhuang Mine 1308 work face of fully mechanized mining, the paper analyses the influence of cutting height to coal by using numerical simulation. The results indicate that when cutting height increase, the plastic failure fields augment, the topcoal break up seriously, and the odds of rib spalling and roof fall increase, so we should adopt corresponding prevention measures.
出处
《能源技术与管理》
2009年第1期1-3,共3页
Energy Technology and Management
基金
国家自然科学基金项目(50774079)
江苏省普通高校研究生科研创新计划项目(CX07S_033Z)
关键词
机采高度
综放开采
数值模拟
塑性破坏
cutting height
fully mechanized sublevel caving mining
numerical simulation
plastic failure
