高密度电阻率法在莱州矿集区地下采空区调查中的应用

Application of the high-density resistivity method to the investigation of underground mining airspace in the Laizhou mining catchment area

山东莱州地区具有丰富的矿产资源,极大地促进了当地的建设发展,随着多年的矿产开采,出现了一系列的环境地质问题。为改善与治理区域环境地质问题,选择合适高效的调查方法进行环境地质调查尤为重要。高密度电阻率法是一种阵列式的电阻率勘探方法,具有成本低、效率高的优点,能够极大提高环境地质调查工作效率。本文基于高密度电阻率法对山东莱州浞东村西北铁矿及周边区域开展调查工作,查明浞东铁矿矿区地层的地电特征、地下采空区的空间分布特征以及地下海水入侵情况等环境地质问题。结果表明:浞东铁矿周边地区存在较为严重的海水入侵现象,铁矿深部存在一处范围较大的采空区;区内地下水较为发育,且因海水入侵导致地下水咸化,可能存在由地下咸水引起的假异常,仍需进一步开展工作和钻探施工加以研究和验证。研究结论可为铁矿生态修复工作提供支撑。

Shandong Laizhou area is rich in mineral resources,which greatly promotes the construction and development of the area,with years of mineral exploitation,a series of environmental geological problems have emerged.In order to improve and manage regional environmental geological problems,it is particularly important to select appropriate and efficient investigation methods for environmental geological investigations.The high-density resistivity method is an array resistivity exploration method with the advantages of low cost and high efficiency,which can greatly improve the efficiency of environmental geological investigation.This paper is based on the high-density resistivity method to carry out investigation work on the northwest iron ore mine and the surrounding area of Laizhou Sustainability Village,Shandong Province,to find out the geoelectric characteristics of the strata of the Sustainability Village,the spatial distribution characteristics of the underground air-mining zone,and the environmental geological problems such as the intrusion of underground seawater in the mine area.The results show:Sustainability and sustainability The area around the East Iron Ore Mine is subject to relatively severe seawater intrusion,and there is a wide-ranging open area at the depth of the iron ore mine;The groundwater in the area is relatively developed and salinised due to seawater intrusion,and there may be pseudo-anomalies caused by saline groundwater,which still need to be studied and verified by further work and drilling construction.The findings of the study can support the ecological restoration of iron ore mines.