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大藤峡水库对广西盘龙铅锌矿矿坑涌水量影响预测
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引用本文:邓忠,廖培涛,秦平亮,唐勇臣,康志强.大藤峡水库对广西盘龙铅锌矿矿坑涌水量影响预测[J].中国岩溶,2021,(2):198-204. DENG Zhong,LIAO Peitao,QIN Pingliang,TANG Yongchen,KANG Zhiqiang.Influence of the Datengxia reservoir on water inrusch amount of the Panlong lead-zinc mine in Guangxi[J].Carsologica Sinica,2021,(2):198-204.
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作者单位
邓忠 广西水文地质工程地质勘察院 
廖培涛 广西水文地质工程地质勘察院 
秦平亮 广西水文地质工程地质勘察院 
唐勇臣 广西水文地质工程地质勘察院 
康志强 中国—东盟地学合作中心(南宁)/广西壮族自治区地质矿产勘查开发局 
基金项目:广西科技基地和人才专项项目(桂科AD20297091);“大藤峡水利枢纽正常蓄水回水对武宣县盘龙铅锌矿区地质环境影响分析”项目
中文摘要:矿井突水是矿山开采过程中最具威胁的自然灾害之一,其中以岩溶水突水最为常见。大藤峡水利枢纽蓄水后,抬高了盘龙铅锌矿附近黔江的地表水位。矿山继续向深部开采,矿坑涌水危险进一步增加。文章基于Visual Mod Flow地下水流数值模拟软件,建立盘龙铅锌矿大岭矿段的数值模型,采用矿坑涌水量实测值以及多种矿坑涌水量计算方法对数值模型进行校验。通过模拟计算,预测大藤峡水利枢纽蓄水后对不同开采中段矿坑涌水量将会明显增加。为了降低矿坑涌水量,建议在黔江河近岸的3个倒灌口各建1个挡水坝,在大岭矿段东侧和西侧各施工1道灌浆帷幕。当帷幕体透水率为3 Lu时,止水效果可达44.21%~53.14%。
中文关键词:矿坑涌水量  数值模拟  盘龙铅锌矿  大藤峡水库  广西
 
Influence of the Datengxia reservoir on water inrusch amount of the Panlong lead-zinc mine in Guangxi
Abstract:Water inrush is one of the most threatening natural hazard in mining, of which karst water is the most common. The Datengxia Dam has raised the surface water level of the Qianjiang River near the Panlong lead-zinc mine. In addition, with mining further toward the deep subsurface, the value of mine water inrush will be significantly increased. Based on the hydrogeological conditions of the Panlong Lead-zinc mine in Guangxi, a numerical model of the Daling section of this mine was established using the software of Visual ModFlow. The measured values and various calculation methods of mine water inrush were used to verify the numerical model. Through simulation calculation, the influence of water impoundment of the Datengxia Dam on the water inrush of different mining elevations is predicted. The results show that the water inrush of the mine pit will increase obviously after the water impoundment of the Datengxia reservoir. In order to reduce the amount of mine water inrush, it is suggested to build a retaining dam at each of the three backfill ports near the shore of the Qianjiang River, and construct a grouting curtain on the east and west sides of the Daling section of the mine. When the water permeability of the curtain body is 3 Lu, the water stop effect can reach 44.21~53.14%.
keywords:mine water inrush  numerical simulation  Panlong lead-zinc mine  Datengxia reservoir  Guangxi
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