急倾斜煤层特殊采煤法工作面矿压规律  

Mine Pressure Law of Steeply Inclined Seam Working Face by Special Mining Method

作　　者：罗霄[1] 孙广义[1] 

机构地区：[1]黑龙江科技大学矿业工程学院,黑龙江哈尔滨150027

出　　处：《煤矿安全》2014年第9期203-206,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51074068);黑龙江省教育厅基金重点资助项目(11551z013)

摘　　要：为保证在矿井通风安全的前提下减轻巷道掘进量,提高资源回收率和单人工效,对某矿工作面矿山压力进行理论和数值模拟分析,得出急倾斜煤层水平分层Z型通风留巷放顶煤法在倾向方向,易形成较稳定的铰接岩梁,从而阻止顶板大部分岩石重量直接作用在工作面支架上,使工作面支架受力变小,矸石冒落沿底板向下滑,在底板侧易堆积再向顶板侧过度,形成工作面底板侧压力大于顶板侧的压力,导致工作面压力由底板侧向顶板侧逐渐变小的局势,工作面矿压观测验证了该规律。Abstract： In order to reduce the amount of roadway excavation and guarantee mine ventilation safety, improve resource recovery rate and single efficiency, we researched mine pressure regularity by theoretical analysis and numerical simulation, the method of steep seam horizontal stratification Z type ventilation roadway retained caving method in the dip direction are easy to form more stable hinge so as to prevent roof rock stand directly on support, which resulting in the work face support force smaller and gangue falling down along the bottom, easy accumulation to the- roof over the side of the plate side. It will form the bottom side of the roof side pressure greater than the pressure, leading to face pressure from the bottom side to roof side gradually, and the working face of mine pressure test the correctness of the above theory.

关 键 词：急倾斜煤层 Z型通风留巷 矿压观测 特殊采煤法 

分 类 号：TD322[矿业工程—矿井建设]