复杂地质构造条件下岩溶大水矿山既有阻水帷幕薄弱带探查技术——以鄂东南某矿山为例  

Exploration technology of weak zone of existing curtain in karst heavy water mine under complex geological structure conditions:A case study of the mining in Southeast Hubei

作　　者：王亚男 阮启林 李文涛 张涛 王铮 杨伟卫 Wang Yanan;Ruan Qilin;Li Wentao;Zhang Tao;Wang Zheng;Yang Weiwei(The First Geological Brigade of Hubei Geological Bureau,Daye 435000,China;Research Center for Ecological Environment Restoration and Comprehensive Utilization of Resources,Daye 435000,China)

机构地区：[1]湖北省地质局第一地质大队,湖北大冶435000 [2]生态环境修复与资源综合利用研究中心,湖北大冶435000

出　　处：《资源环境与工程》2025年第1期51-59,68,共10页Resources Environment & Engineering

基　　金：大冶市大志山铜矿矿山防治水地质勘查项目。

摘　　要：岩溶大水矿山通常采用帷幕注浆工程防治水害,但受复杂地质构造和注浆技术水平限制,不少帷幕出现薄弱带,破坏了阻水效果。以鄂东南地区某矿山为例,以地下水系统理论为指导,采用水文地质剖面法刻画矿区岩溶含水系统边界,结合岩溶发育规律和断裂导水性分析刻画岩溶含水系统内部结构特征,依据不同时期岩溶水流场对比研究岩溶水流系统演变特征,明确了F 6断裂为帷幕内外的主要导水通道;然后结合帷幕注浆效果评价、帷幕上岩溶特征、岩溶水流场图、物探解译结果,从平面范围和垂向深度上确定了阻水帷幕薄弱带为K97-K130段,渗漏深度达-600 m标高。本次研究构建了“含水系统划分—水流系统刻画—导水通道确定—帷幕薄弱带圈定”、“前期资料综合研究分析为主,少量调查、监测、物探工作为辅”的帷幕薄弱带综合探查技术思路,该技术思路科学合理、经济可行、效果显著,具有推广意义。Curtain grouting engineering is usually used to prevent water damage in karst heavy water mines,due to the complex geological structure and the technical level of grouting,many curtains appear weak zones,affecting the water blocking effect.Guided by the theory of groundwater system,this paper delineates the boundary of the karst water system by hydrogeological profile method in the mining area,characterizes the internal structural characteristics of the karst water system in combination with the karst development law and fracture structure conductivity analysis,studies the evolution characteristics of the karst water flow system according to the comparison of flow fields in different periods.It identifies F 6 as the main water-bearing channel inside and outside the curtain.Then,combined with the evaluation of curtain grouting effect,karst characteristics on the curtain,karst flow field map and geophysical interpretation results,the weak zone of the curtain is determined from the plane range and vertical depth.The weak zone of the curtain is K97-K130,and the leakage depth reaches-600 m elevation.In this paper,a comprehensive exploration technique idea of“water-bearing system division-water flow system characterization-water channel determination-curtain weak zone delineation”and“preliminary data comprehensive research and analysis,supplemented by a small amount of investigation,monitoring and geophysical exploration”is constructed.The technology is scientific and reasonable,economical and feasible,and has remarkable effect.

关 键 词：帷幕 薄弱带 岩溶水 岩溶大水矿山 

分 类 号：P641.72[天文地球—地质矿产勘探] TD745[天文地球—地质学]