冲击地压矿井微震监测技术在防治水中的应用研究

Study on the application of rock burst mine microseismic monitoring technology in water prevention and control

本文结合大佛寺煤矿实际情况,提出了一种利用微震监测技术进行综放工作面涌水预测预报的方法。通过说明矿井水害的诱发机制形成原因,过渡到研究采掘扰动及水岩耦合等多重因素下的岩体裂隙发育与破断现象。通过引入传统的微震监测技术,对岩体裂隙发育与破断过程进行精确拾取与反演,进一步说明水害防治中微震技术的运用可行性。结合实际情况,对大佛寺煤矿40119工作面回采过程中,时间尺度内矿井涌水量与微震频次与微震能量之间的协同演化规律进行分析,既验证了冲击地压矿井微震监测技术在防治水中的应用技术,也为深层次发展新型矿井水害预警技术提供思路。

Based on the actual situation of Dafosi Coal Mine,this paper puts forward a method of using microseismic monitoring technology to predict water inflow in fully mechanized caving face.By explaining the formation reasons of mine water damage inducing mechanism,the study transits to the study of rock fracture development and fracture phenomenon under multiple factors such as mining disturbance and water-rock coupling.Secondly,by introducing the traditional microseismic monitoring technology,the accurate picking and inversion of rock fracture development and fracture process are carried out,further indicating the application feasibility of microseismic technology in water damage prevention and control.Combined with the actual situation,the synergistic evolution law between mine water inflow,microseismic frequency and microseismic energy in the time scale during the mining process of 40119 working face in Dafosi Coal Mine is analyzed,which not only verifies the application technology of microseismic monitoring technology in rock burst mine water damage prevention and control,but also provides ideas for the deep development of new mine water damage warning technology.