瓮福磷矿英坪矿段北风井水文地质特征与突水防治措施探讨  

Hydrogeological characteristics and water inrush prevention measures of Beifeng shaft in Yingping mining section of Wengfu phosphate deposit

作　　者：宫学智 刘洁波 黄凯 杨朝贵 曾凡祥 GONG Xuezhi;LIU Jiebo;HUANG Kai;YANG Chaogui;ZENG Fanxiang(Geological and Mineral Exploration Institute,Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou,Guiyang 550005,Guizhou,China;Guizhou Lvnengxing New Energy Development Co.,Ltd.,Guiyang 550005,Guizhou,China;Wengfu Phosphate Mine,Wengfu Group,Fuquan 550500,Guizhou,China)

机构地区：[1]贵州省有色金属和核工业地质勘查局地质矿产勘查院,贵州贵阳550005 [2]贵州绿能星新能源开发有限公司,贵州贵阳550005 [3]瓮福集团瓮福磷矿,贵州福泉550500

出　　处：《矿产与地质》2022年第4期846-853,864,共9页Mineral Resources and Geology

基　　金：瓮福(集团)有限责任公司瓮福磷矿延伸技术改造项目“英坪200万t/a地下采矿工程北风井竖井疏干排水井工程”(WF-001-2020-GC-00224)资助。

摘　　要：瓮福磷矿英坪矿段北风竖井施工过程中因井内突水导致水量大增,水压增加无法继续掘进施工。为解决这一问题,通过对北风井附近地质构造、地层岩层含水性、节理及断裂构造含水及导水性、岩性渗透系数、含水层厚度等水文地质条件进行调查分析,得出北风井日涌水量为4566.15m^(3);采取在竖井附近施工两个大口径钻孔抽排水,亦在北风井附近形成一影响漏斗,对地下水静水压力、水位、补径排等进行干预,减少竖井内涌水量,保证施工能顺利进行。抽排水钻孔日排水量达3384.27m^(3),大大降低了地下水对竖井的影响。北风井疏干排水的成功事例,说明在矿区富水区深部工程施工时,利用大口径疏排钻孔能很好地解决突水危害,是矿山治理突水灾害最有效的方法之一。During the construction of the Beifeng shaft in Yingping mining section of Wengfu phosphate deposit,the water inrush in the shaft results in a large increase of water volume and water pressure,which makes it impossible to continue the excavation construction.In order to solve this problem,through the investigation and analysis of hydrogeological conditions such as geological structure,stratum water content,water content and conductivity of joint and fault structures,lithologic permeability coefficient and aquifer thickness near the Beifeng shaft,it is concluded that the daily water inflow of the Beifeng shaft is 4566.15 m^(3).Two large-diameter drilling holes are constructed near the shaft for pumping and drainage,and an impact funnel is also formed near the Beifeng shaft to intervene in the hydrostatic pressure,water level and diameter supplement and drainage of groundwater,the water inflow in the shaft is reduced and the smooth progress of construction is ensured.The daily drainage of pumping and drainage drilling holes is 3384.27 m^(3),which greatly reduces the impact of groundwater on the shaft.The successful example of Beifeng shaft drainage shows that the use of large-diameter drainage drilling hole can well solve the harm of water inrush during the deep engineering construction at the water rich area in the mining area.It is one of the most effective methods to control the water inrush disaster in the mine.

关 键 词：突水 大口径钻孔 抽排水 防治 

分 类 号：P619.212[天文地球—矿床学] P641.4[天文地球—地质学]