大采高综放面倾向支承压力分布的采厚效应  

Mining Thickness Effect of Inclined Support Pressure Distribution in High Cutting Fully Mechanized Top Coal Caving Mining Face

作　　者：孔德中[1] 王兆会[1] 王颜亮[1] 范苑[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤炭工程》2014年第10期165-168,共4页Coal Engineering

基　　金：国家重点基础研究发展计划(973计划)资助项目(2013CB227903);国家自然科学基金项目(51004109);煤炭资源与安全开采国家重点实验室开放课题(SKLCRSM11KFB05);中央高校基本科研业务费专项资金资助(2010QZ02)

摘　　要：为了确定大采高综放面倾向支承压力分布与采厚的关系,在现场实测的基础上,应用弹塑性极限平衡理论计算不同采厚下倾向支承压力峰值点大小、位置;采用FLAC3D数值模拟不同采厚下工作面推进过程中支承压力的动态变化。研究结果表明:大采高综放工作面支承压力峰值点大小与一次采厚近似成反比关系,峰值点距离与一次采厚成非线性正比关系。由于开采扰动,使得理论计算的结果偏小,需要对理论计算结果进行修正。In order to determine a relationship between an inclined support pressure distribution and a mining thickness of a high cutting fully mechanized top coal caving mining face, based on a site measurement, elastic and plastic limit balance theory was applied to calculate a size and location of the inclined support pressure peaks under different mining thickness. A FLAC3D was applied to the numerical simulation on the dynamic variation of the support pressures in a pushing forward process of the coal mining face under different mining thickness. The study results showed that the support pressure peak of the high cutting fully mechanized top coal caving mining face approximately was an inverse ratio relationship to a one passing mining thickness and the peak point distance and the one passing mining thickness were a nonlinear direct ratio relationship. Due to the mining turbulences, the theoretical calculation results were too small and the theoretical calculation results should be corrected.

关 键 词：大采高综放 倾向支承压力 采厚效应 理论分析 数值计算 

分 类 号：TD823.49[矿业工程—煤矿开采]