首采工作面矿压显现观测设计方案研究
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摘要
基于山西大峪煤矿103综采工作面矿压观测任务,综合采用监测预测、数值模拟和实验室检测3种方法,通过布置支架在线阻力监测系统,分析支撑力分布情况;建立顶板上覆岩层数值模型,模拟工作面各岩层的移动及破坏情况;进行煤岩物理力学试验,为顶板分类提供计算依据。通过上述手段探索该矿首采工作面矿压显现规律,为合理选择采煤参数、支护方式和顶板管理方法提供依据。
Based on the observation task of mine pressure in the 103 fully mechanized mining face of the Dayu coal mine in Shanxi Province,three methods of monitoring prediction,numerical simulation,and laboratory inspection were comprehensively adopted. The on-line resistance monitoring system of the support was arranged to analyze the distribution of support force; and the numerical value of the overburden on the top plate was established. The model simulates the movement and destruction of various rock layers in the working face;the physical and mechanical tests of coal and rock provide the basis for the classification of the roof. Through the above means to explore the mine the first mining face mining pressure law,to provide a basis for a reasonable choice of coal mining parameters,support methods and roof management methods.
Based on the observation task of mine pressure in the 103 fully mechanized mining face of the Dayu coal mine in Shanxi Province,three methods of monitoring prediction,numerical simulation,and laboratory inspection were comprehensively adopted. The on-line resistance monitoring system of the support was arranged to analyze the distribution of support force; and the numerical value of the overburden on the top plate was established. The model simulates the movement and destruction of various rock layers in the working face;the physical and mechanical tests of coal and rock provide the basis for the classification of the roof. Through the above means to explore the mine the first mining face mining pressure law,to provide a basis for a reasonable choice of coal mining parameters,support methods and roof management methods.
引文
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[4]王家臣,王蕾,郭尧.基于顶板与煤壁控制的支架阻力的确定[J].煤炭学报,2014,39(8):1619-1624.
[5]王永忠,王崧玮,山长昊,等.急倾斜分段开采液压支架合理工作阻力的确定[J].煤炭技术,2018,37(1):48-51.
[6]张金虎,杨正凯.综采工作面矿压监测数据处理方法研究及应用[J].煤矿开采,2018,23(1):96-99+87.
[7]王存海.数值模拟研究首采面矿压显现规律[J].中国新技术新产品,2012(20):181.
[8]杨景超,甄坤坤,郑长龙,等.不规则煤岩的力学特性试验研究[J].煤炭技术,2017,36(12):33-35.