小庄煤矿隐蔽致灾地质因素类型及致灾特征分析

Analysis of hidden disaster-causing geological factors types and disaster-causing characteristics in Xiaozhuang Mine

对矿井主要隐蔽致灾地质因素致灾特征的分析和评价是保障安全生产的必要工作。本文以小庄煤矿为例,通过全面分析开采4号煤层时各类隐蔽致灾地质因素的基本特征,确定影响矿井安全开采的关键致灾因素,评价其致灾危险性。研究结果表明,小庄煤矿主要的隐蔽致灾因素包括自身采空区、断层/裂隙和褶曲、导水裂隙带、封闭不良钻孔、瓦斯、地下含水体、冲击地压和矿井热害,其中关键致灾地质因素为导水裂隙带、封闭不良钻孔和地下含水体,未发现其他致灾因素。

The analysis and evaluation of the disaster characteristics of the main hidden geological factors in the mine is a necessary work to ensure safe production.Taking Xiaozhuang Mine as an example,this paper comprehensively analyzed the basic characteristics of various hidden disaster-causing geological factors when mining No.4 coal seam,determined the key disaster-causing factors affecting the safe mining of the mine,and evaluated its disaster-causing risk.The results showed that the main hidden disaster-causing factors in Xiaozhuang Mine included its own goaf,fault/fracture and fold,water conduction fracture zone,poorly sealed borehole,gas,underground water-bearing body,rock burst and mine heat damage.The key geological factors were water conduction fracture zone,poorly sealed borehole and underground water-bearing body,and no other disaster-causing factors were found.