摘要
煤矿开采引起的采空塌陷、地裂缝等矿山地质环境问题日益严重。为了动态监督管理矿山环境,研究闭坑矿山采空塌陷区安全状况,选取北京西部煤矿集中开采区内的西岳台村作为典型监测示范区。区内布置3个基准点,4个工作基点,15个沉降观测点以及一套微震监测系统。通过采用地表形变测量与微震监测技术相结合的方法,以2015—2018年4年监测数据分析,年平均沉降量在-10mm^10mm之间,年平均1~2次微震事件。监测发现已闭坑煤矿虽然处于稳定期,但是仍存在缓变塌陷状况并且受外界变量影响,需进一步加强监测。
Mine geological environment problems such as goaf collapse and ground fissure caused by coal mining are becoming more and more serious.In order to dynamically supervise the mine environment and study the safety situation of the minedout subsidence area in closed pit mines,Xiyuetai village in the concentrated mining area of Western Beijing is selected as a typical monitoring demonstration area.Three datum points,four working datum points,15 settlement observation points and a set of micro-seismic monitoring system are arranged in the area.By using a new method of combining surface deformation measurement with micro-seismic monitoring technology,and analyzing the monitoring data from 2015 to 2018,the annual average settlement is between-10mm and 10mm,and the annual average number of micro-seismic events is 1-2.Although the closed pit coal mine is in a stable period,there is a slow subsidence situation that is affected by external variables.So it needs further monitoring in the future.
作者
邢宇鑫
吴大鹏
王亚婷
张涛
孙楠
秦沛
XING Yuxin;WU Dapeng;WANG Yating;ZHANG Tao;SUN Nan;QIN Pei(Beijing Geological Engineering Design Institute,Beijing 100500;Oil and Gas Survey Center,CGS,Beijing 100089;Key Laboratory of Unconventional Petroleum Geology,CGS,Beijing 100089;Unconventional Oil and Gas Engineering Technology Center,CGS,Beijing 100089;Beijing Energy Conservation and Environmental Protection Center,Beijing 101101)
出处
《城市地质》
2019年第4期55-60,共6页
Urban Geology
关键词
微震监测
形变测量
稳定期
缓变塌陷
Micro-seismic monitoring
Deformation measurement
Stable period
Slow subsidence
