高密度电法和微动法在海南岛西部矿山超采区勘察中的应用  

Application of High-density Electrical Method and Microtremor Survey in the Investigation of the Overmined Area in Western Hainan Island

作　　者：钟宙灿 符彩花 张匡华 蔡水库 符国精[2] 王富[3] 陈长亮 蔡于春[2] Zhong Zhoucan;Fu Caihua;Zhang Kuanghua;Cai Shuiku;Fu Guojing;Wang Fu;Chen Changliang;Cai Yuchun(The Key Laboratory of Marine Geological Resources and Environment of Hainan Province,Haikou Hainan 570206,China;Institute of Geological Survey of Hainan Province,Haikou Hainan 570206,China;Hydrogeologic and engineering geological prospecting institute in Sanya,Sanya Hainan 572002,China;Marine of Geological Survey of Hainan Province,Haikou Hainan 570206,China)

机构地区：[1]海南省海洋地质资源与环境重点实验室,海南海口570206 [2]海南省地质调查院,海南海口570206 [3]三亚水文地质工程地质勘察院,海南三亚572002 [4]海南省海洋地质调查院,海南海口570206

出　　处：《工程地球物理学报》2024年第5期802-809,共8页Chinese Journal of Engineering Geophysics

基　　金：海南省海洋地质资源与环境重点实验室自主课题(编号:22-HNHYDZZYHJKF023,HNHYDZZYHJZZ003)。

摘　　要：许多地区矿山开采后会回填采坑,掩盖超深超采行为,不仅对国有矿产资源造成破坏,也对自然环境造成了严重的损害。地球物理作为探测矿山超采规模的重要手段,面对地质条件复杂、背景干扰等不利因素,单一物探方法会出现探测结果的多解性,难以实现对超采回填区的精细探测。本次研究首先采用高密度电法准确识别出回填体的分布范围,然后采用微动探测方法对回填体埋深进行综合探测。通过比对微动探测与钻孔成果,结果显示对岩性界面的探测精度在2.30%~3.22%;结合微动探测的成果对高密度电法数据进行再解译,与地质钻孔揭示的回填体底界深度误差在0.3 m以内。本次研究表明,采用综合物探方法可以有效识别并准确揭示超采回填区的规模,为今后查明超采违法行为提供了强有力的科学依据和技术支持。The mining pits are backfilled to cover up the illegal behavior in ultra-deep over-mining areas,which not only causes damage to state-owned mineral resources,but also causes serious damage to the natural environment.As an important means to detect the over-exploitation scale of mines,geophysical prospecting is faced with such unfavorable factors as complex geological conditions and background interference.Single geophysical prospecting methods involve multiple indefinite detection solutions,making it difficult to achieve fine detection of over-exploitation backfill areas.In this study,the high-density electrical method was first used to accurately identify the distribution of the backfill area,and then the microtremor survey was used to comprehensively detect the backfill depth.By comparing the drilling data,the results show that the accuracy of the microtremor survey on the lithological interface ranges between 2.30%~3.22%.The reinterpretation of the high-density electrical method data in conjunction with the microtremor survey show that the results are within 0.3 m of the depth of the interface at the base of the backfill as indicated by the boreholes,indicating that the use of comprehensive geophysical methods can effectively identify and accurately reveal the scale of the backfill area.This study provides a strong scientific basis and assistance for identifying overmining violations in the future.

关 键 词：高密度电法 微动探测 矿山超采 海南岛西部 

分 类 号：P631[天文地球—地质矿产勘探]