近距离煤层重复采动裂隙场判别工程试验研究  

Engineering Experimental Study on Fracture Field Discriminant of Repeated Mining in Close Distance Coal Seams

作　　者：张文柯 ZHANG Wenke(CCTEG Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Disaster Prevention and Control,Fushun 113122,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [2]煤矿灾害防控全国重点实验室,辽宁抚顺113122

出　　处：《煤炭技术》2025年第3期70-73,共4页Coal Technology

摘　　要：为了掌握采动覆岩经历二次扰动后覆岩裂隙演化发育的特征,以下石节煤矿222下工作面和2301上采空区工程为研究对象,通过采用高精度ESG微震监测系统,对重复采动条件下222工作面采动覆岩的微震事件进行监测,分析工作面覆岩裂隙三维空间分布特征。确定了222工作面裂隙带的具体范围以及层位,裂隙带高度为64~151 m。覆岩空间微破裂前后分布范围在200 m内,确定了采动裂隙场的基本范围,为后续瓦斯治理、巷道支护提供数据支撑。In order to grasp the characteristics of the evolution and development of overlying rock fractures after secondary disturbance during mining,the 222lower working face and 2301upper goaf engineering of Xiashijie coal mine were taken as the research objects.By using a high-precision ESG microseismic monitoring system,the microseismic events of overlying rock in the 222 working face under repeated mining conditions were monitored,and the three-dimensional spatial distribution characteristics of overlying rock fractures in the working face were analyzed.The specific range and layer of the fracture zone in the 222 working face are determined,and the height of the fracture zone is 64-151 m.The distribution range before and after micro fracturing in the overlying rock space is within 200 m,and the basic range of the dynamic fracture field is determined to provide data support for subsequent gas control and tunnel support.

关 键 词：微震监测 近距离煤层 裂隙演化 重复采动 

分 类 号：TD327.2[矿业工程—矿井建设]