摘要
厚松散层薄基岩煤层顶板水害亟需有效手段查明,以保障煤矿安全开采。基于并行电法的O型观测系统,可一次同步采集全工作面全空间电场电位值,减少不同时间测量数据的干扰,有效增加地电场数据辐射范围和密度,增强三维顶板探查精准度;在试验工作面回采前,布置O型观测系统并对其进行数据反演,得到煤层顶板存在两处低阻异常区和煤层顶板薄基岩面分布形态,为工作面开采前提供有效的疏放水靶区,并指导后续电法监测钻孔位置设计。
To ensure coal seam safe mining,the effective methods are urgently needed to identify the water hazards on the roof of coal seams with thick loose layers and thin bedrock.Based on the O type observation system with parallel electrical method,the electric potential data of the whole working face can be synchronously collected at one time to reduce the interference of the measurement data at different times,which can effectively increase the coverage range and density of geoelectric field data and enhance the accuracy of the roof three-dimensional detection.Before mining,the O type observation system was arranged and its data inversion was carried out.It is obtained that there are two low-resistivity anomalous areas in the coal seam roof of the test working face and the distribution patern of the thin bedrock surface of the coal seam roof is revealed,which provide an effective water drainage target area for the working face before mining,and guide the design of the drilling position for the electrical monitoring in the future.
作者
李小二
刘盛东
任志祥
杨彩
张亮亮
LI Xiaoer;LIU Shengdong;REN Zhixiang;YANG Cai;ZHANG Liangliang(Zhaogu No.1 Mine,Jiaozuo Coal Group,Jiaozuo 454150,China;State Key Laboratory of Deep Geomechanics and Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China;The National Joint Engineering Laboratory of Internet Applied Technology of Mines,China University of Mining and Technology,Xuzhou 221116,China;Internet of Things Perception Mine Research Center,China University of Mining and Technology,Xuzhou 221116,China;School of Resource and Geoscience Science,China University of Mining and Technology,Xuzhou 221116,China)
出处
《煤炭技术》
CAS
北大核心
2023年第6期84-87,共4页
Coal Technology
基金
国家重点研发计划资助(2022YFC3003302)
国家自然科学基金资助项目(41974149,42104133)
江苏省自然科学基金项目(BK20190643)。
关键词
并行电法
O型观测系统
顶板水害
厚松散层薄基岩
parallel electrical method
O type observation system
water hazards on the roof
thick loose layer and thin bedrock
