近距离煤层综放面矿压显现特征模拟与观测

Simulation and Observation of Characteristics of Mine Pressure Behavior in Close-distance Coal Seam at Fully-mechanized Caving Face

为分析近距离煤层工作面采场矿压特征,本文以铺龙湾煤矿8103工作面为工程背景,采用模拟试验方法,对近距离煤层工作面覆岩结构特征进行了分析,确定下伏煤层采动对上覆煤层的弯曲带、断裂带形成二次扰动,致使破断顶板层发育高度大于单一煤层开采时的发育高度。同时对工作面矿压显现规律进行了现场观测,研究结果可为相似条件工作面提供参考依据。

In order to analyze the characteristics of mining pressure in close distance coal seam working face at 8103 working face of Pulongwan Colliery,the paper analyzes the structural characteristics of the overlying rock in close distance coal seam working face through simulation testing methods,determines that the mining of the underlying coal seam causes secondary disturbance to the bending and fracture zones of the overlying coal seam,resulting in the development height of the broken roof layer being higher than that of a single coal seam mining,and conducts on-site observations on the behavior of mining pressure in the working face,whose research results can provide a reference basis for working faces with similar conditions.