微动探测在铜陵某金矿采空区勘查中的应用  

Application of Microtremor Survey in the Exploration of a Worked-out Area of Gold Mining in Tongling

作　　者：鲁杏[1] 郭信[1] 罗传华[2] 丁丹 余敏 崔先文[1] Lu Xing;Guo Xin;Luo Chuanhua;Ding Dan;Yu Min;Cui Xianwen(Geological Exploration Technologies Institude of Anhui Province,Hefei Anhui 230031,China;321 Geological Team,Anhui Bureau of Geology and Mineral Resources,Tongling Anhui 244033,China)

机构地区：[1]安徽省勘查技术院,安徽合肥230031 [2]安徽省地质矿产勘查局321地质队,安徽铜陵244033

出　　处：《工程地球物理学报》2023年第1期50-55,共6页Chinese Journal of Engineering Geophysics

基　　金：安徽省重点研究与开发计划项目(编号:2022107020010)。

摘　　要：近年来,采空区塌陷事故时有发生,采空区勘查的重要性越来越高,物探方法能快速、高效地查明采空区的位置、范围和边界等,可以为综合治理提供基础依据。本文以铜陵市某工程场地金矿采空区为研究对象,选用微动探测方法对该金矿地下采空区进行了探测。工作中,采用线性排列进行探测,对每个排列的数据采用扩展空间自相关法获取了每个测点的频散曲线,对频散曲线进行反演并通过插值计算,获得了剖面横波速度结构,圈定了4个低速异常区,根据地质和钻孔资料并经综合研究,推断为采空区或破碎,经过钻探验证得以确认。本文微动探测结果表明,在存在严重背景干扰的城市开展采空区勘查工作,微动探测方法具有较强的探测能力和优势,可为本区的采空区地质灾害的勘查、治理提供基础资料。In recent years,collapse accidents offen occur in worked-out areas of mines,indicating great importance of exploration to these areas.Geophysical exploration methods can quickly and efficiently detect the location,scope and boundary of gob,which can provide basis for comprehensive treatment.Taking the goaf of a gold mine in Tongling city as the research object,this paper selects the micro motion detection method to detect the underground goaf of the gold mine.In this study,linear arrangement is used for detection and the dispersion curve of each measuring point is obtained by using the extended spatial autocorrelation method.The dispersion curve is inversed and the section shear wave velocity structure is obtained through interpolation calculation and four low-speed abnormal areas are delineated.Based on geological and borehole data and comprehensive research,the low-speed anomaly is delineated and the goaf is inferred.The detection results show that the micro motion detection method has strong detection ability and obvious advantages in the exploration of goaf in cities with serious interference background.

关 键 词：采空区 微动 横波速度结构 

分 类 号：TD325.3[矿业工程—矿井建设] P631.4[天文地球—地质矿产勘探]