充电法和高密度电法在贵州贞丰者相二金矿岩溶勘查中的应用  

Application of Mise-a-la-masse Method and High-density Electrical Method in Karst Exploration of Zhexiang No.2 Gold Deposit in Zhenfeng, Guizhou

作　　者：羊文[1] 张西君 冯娟[1] 陈丞 杨磊 YANG Wen;ZHANG Xi-jun;FENG Juan;CHEN Cheng;YANG Lei(105 Geological Party,Guizhou Bureau of Geology Mineral Resources Exploration and Development,Guiyang 550018,Guizhou,China;Engineering Technology Innovation Center of Mineral Resources Explorations in Bedrock Zones,Ministry of Natural Resources,Guiyang 550081,Guizhou,China;Guizhou Engineering Research Center for Geologic-Geophysical exploration development and application,Guiyang 550081,Guizhou,China;Guizhou Geological Survey,Guiyang 550018,Guizhou,China)

机构地区：[1]贵州省地质矿产勘查开发局105地质大队,贵州贵阳550000 [2]自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳550081 [3]贵州省地质物探开发应用工程技术研究中心,贵州贵阳550081 [4]贵州省地质调查院,贵州贵阳550081

出　　处：《贵州地质》2021年第2期192-200,共9页Guizhou Geology

基　　金：贵州省重点资源勘查“大精查”项目-贵州省贞丰县者相二金矿勘探资助。

摘　　要：在岩溶矿区钻探过程中,由于揭露、钻遇岩溶发育地层会使冲洗液在岩溶地层中流通,引起井漏、涌水等各种事故,同时揭露和沟通不同含水层,会造成初始岩溶含水系统的破坏。以贞丰县者相二金矿区为例,为避免钻孔施工对矿区内饮用水源龙井(S24)的影响,需查清其径流带在矿区的分布情况,本文针对矿区内龙井(S24)岩溶暗河出口,首先利用水文地质调查手段,初步判决岩溶发育程度、覆盖层厚度及结构,然后采用充电法和高密度电法组合进行深部探测研究,再将物探反演结果与水文、地质等资料进行综合对比分析、解释,揭示矿区内龙井(S24)岩溶暗河的空间形态、规模,指导钻探施工,后经钻探工程验证,未对龙井水(S24)造成影响,有效降低矿区勘探对浅部岩溶水系统的影响,实现了矿区从水文地质、物探勘查到钻探施工各个环节的绿色勘查。During the drilling work in the karst mining area,because drilling in the develped karst layer made flush fluid circulate in the karst layer,then it will causecirculation loss,water burst and other accident.Meanwhile,exposure and communicate different layer will destroy the primary karst water bearing system.It taken Zhexiang NO.2 gold deposit in Zhenfeng as the example,in order to avoid the influence of drilling to drinking water source Longjing(S 24)in the mining area,it’s necessary to find out the distribution of runoff belts in the mining area.In this paper,for the underground karst export of Longjing(S 24)in the mining area,hydrogeologic survey are used firstly to judge the development,overlying thickness and structure,then the assemblage of Mise-a-la-masse method and High-dengsity electrical method are used to do deep test and research,the the physical prospecting inversion result are compared,analyzed and explained with hydrological and geological information,the spatial structure and scale of Longjing(S 24)karst underground water in the mining area are found out.These work guides the drilling,it’s proved it didn’t influence the Longjing(S 24)by drilling,decrease the influence of exploration to shallow karst water system effectively,realize the green exploration from hydrogeology,physical prospection and drilling in the mining area.

关 键 词：岩溶勘查 岩溶暗河 充电法 高密度电法 

分 类 号：P618.51[天文地球—矿床学] P631.3[天文地球—地质学]