深埋弱粘结煤层综放工作面矿压显现特征研究  

Study on the Characteristics of Mining Pressure in Fully Mechanized Top Coal Caving Face with Deep Buried Weak Bond

作　　者：方恩才 邓润义 李守好 翟恩发 陈苗虎 

机构地区：[1]淮矿西部煤矿投资管理有限公司,内蒙古鄂尔多斯017000

出　　处：《煤矿现代化》2017年第6期63-66,共4页Coal Mine Modernization

摘　　要：深埋厚煤层弱粘结综放工作面矿压显现有独特性。本文以唐家会煤矿综放工作面为对象,现场实测表明:(1)初次来压前工作面未放顶煤,来压步距25.6~28.6m,周期来压步距4~12m,平均5.5m。动载系数1.21~1.34,属来压不明显工作面;(2)工作面支架末阻力为15.34~29MPa,平均循环末阻力22.25MPa,为额定值的49.44%。最大循环末阻力42MPa,平均40.14MPa,为额定值的89.2%,工作面中部平均末阻力最大。研究结果为同类条件下工作面安全回采有指导意义。The mining of fully mechanized top coal caving face with weak bond roof in deep thick coal seam has its unique characteristics. Inthis paper, Tang Jia Hui coal mine caving face as the research object, the stope underground pressure behavior characteristics, the results showthat the field analysis： （1）the first before the pressure of working face coal caving, the measured weighting is 25.6-28.6m, periodic weightingstep distance is 4- 12m, average 5.5m. The working face of the dynamic load coefficient distribution of 1.21 - 1.34, is a pressure not obviousworking surface;（2） the end resistance of the working face bracket is between 15.34 and 29MPa, and the mean circulating end resistance valueis 22.25MPa, which is 49.44% of the rated working resistance. The end resistance of the maximum cycle is 42MPa, the average maximumcycle resistance is 40.14MPa, which is 89.2% of the rated working resistance. The research results are of practical guiding significance for thesafe extraction of working face under the same conditions.

关 键 词：深埋 弱粘结 厚煤层 综放开采 矿压显现 

分 类 号：TD323[矿业工程—矿井建设]