大倾角煤层岩层微地震监测技术的研究与应用  

Research and Application of Microseismic Monitoring Technology for Large Dip Angle Coal Seam

作　　者：杨启军 王德平 何清锋 YANG Qijun;WANG Deping;HE Qingfeng(Chuanmei Shidonggou Coal Industry Co.,Ltd.of Sichuan,Wangcang 628209,Sichuan,China)

机构地区：[1]四川川煤石洞沟煤业有限责任公司,四川旺苍628209

出　　处：《能源与节能》2022年第11期160-164,共5页Energy and Energy Conservation

摘　　要：矿井开采大倾角煤层工作面的难度在于支护管理,实际作业时可以通过采煤工作面来压规律和采动压力监测进一步分析得出相关数据进行支护管理优化,从而保证大倾角煤层工作面正常安全开采。在石洞沟煤矿31321工作面开采中,对工作面推进0~50m,通过对大倾角煤层开采岩层移动规律的研究,应用微地震监测技术监测了采动影响下老顶岩层断裂的微地震信号,得出在开采过程中老顶岩层断裂点逐渐增多,且集中在采空区上方,采动影响岩层移动的范围在采空区达到98m,同时还获得了采区冒落带、裂隙带、弯曲下沉带的空间三维定位和影响范围,为矿井安全生产管理提供了支护技术的理论指导和支护方法。The difficulty of mining working face of large dip angle coal seam lie in support management. In actual operation,relevant data can be obtained through further analysis of the coal mining face pressure law and mining pressure monitoring to optimize the support management. In the mining of 31321 working face in Shidonggou Coal Mine, the working face was advanced by 0-50 m. Through the study of the rock movement law of large dip angle coal seam mining, the microseismic monitoring technology was used to monitor the microseismic signal of the main roof stratum fracture under the influence of mining. It was concluded that during the mining process, the fracture points of the main roof stratum gradually increased, and they were concentrated above the goaf. The range of rock movement affected by mining reached 98 m in the goaf. The spatial three-dimensional positioning and influence range signals of the caving zone, fissure zone and bending subsidence zone in the mining area were obtained. It can provide theoretical guidance and support methods for the mine safety production management.

关 键 词：微地震监测应用 地震波 岩层移动规律 周期来压步距 

分 类 号：TD325[矿业工程—矿井建设]