综合物探方法在地质灾害评估中的应用

Application of multiple geophysical exploration methods in geological hazard assessment

不良地质体是工程建设中频繁遇到的一种典型地质灾害,它给工程建设带来了极大的安全隐患,严重威胁到人民生命和财产的安全。本文以江苏某废弃矿坑为研究对象,运用高密度电法、人工源瞬态面波及探地雷达探测采坑周边及坑壁周围的围岩稳定性。文中简要介绍了高密度电法、人工源瞬态面波、探地雷达的工作原理、方法特点、数据采集和数据处理,并对数据进行了解释。通过以上三种方法相互验证、相互补充,查明了采坑周边及坑壁周围的地质构造、地层岩性变化及围岩稳定性,为后期地质灾害治理提供科学依据。

Unfavorable geological body is a typical geological hazard frequently encountered in engineering construction.It puts a project at great risk and seriously threatens the safety of life and property.In this study on an abandoned mine pit in Jiangsu Province,high-density electrical method,artificial source transient surface wave,and ground penetrating radar were employed to detect the rock stability around the mining pit and near the pit wall.This paper briefly introduces the working principles,characteristics,data acquisition,data processing and data interpretation of the methods.Through mutual verification and complementarity of the above three methods,the geological structure,lithologic change and rock stability around the mining pit and near the pit wall are found out,which provides scientific basis for the later geological hazard control.