甘肃省早子沟金矿矿区水文地质特征与矿坑涌水量预测  

Hydrogeological characteristics and prediction mine water inflow of Zaozigou gold field in Gansu province

作　　者：李育 陈爱兵[1] 张卫雄[2] 李永恒 董雪健 蔡家驭 王玉祥 LI Yu;CHEN Ai-bing;ZHANG Wei-xiong;LI Yong-heng;DONG Xue-jian;CAI Jia-yu;WANG Yu-xiang(Faculty of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;The third geological and Mineral Exploration Institute of Gansu Bureau of Geology and Mineral Resources,Lanzhou 730050,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]甘肃省地矿局第三地质矿产勘查院,甘肃兰州730050

出　　处：《地下水》2023年第4期1-4,42,共5页Ground water

基　　金：国家自然科学基金项目(42162012)。

摘　　要：早子沟金矿是西秦岭地区发现的特大型金矿床。随着开采深度加大,矿坑涌水成为影响矿山生产的主要因素之一。本次采用解析法和比拟法进行矿坑涌水量预测,结果表明:若将早子沟金矿矿山开拓至2100 m标高,借用等效介质孔隙含水层,运用地下水向潜水完整井运动的裘布依公式预测,正常矿井涌水量为2976.32 m^(3)/d,矿井最大涌水量为3961.10 m^(3)/d;依据矿区已知井下排水资料,比拟法计算得出正常矿井涌水量为3704.99 m^(3)/d,矿井最大涌水量为4350.37 m^(3)/d。综合分析认为,解析法水文地质参数求取容易产生误差,结果只能作为参考;比拟法经验公式计算简洁,计算参数相对可靠,结果更符合矿坑实际情况。因此,早子沟金矿矿坑涌水量预测应采用比拟法。Zaozigou gold field is a super-large gold deposit found in the west Qinling area.With the increase of mining depth,mine water gushing becomes one of the main factors affecting mine production.The analytical method and analogy method are used to predict the mine water inflow.The results show that if the Zaozigou gold mine is developed to an elevation of 2100 m,the normal mine water inflow is 2976.32 m^(3)/d,and the maximum mine water inflow is 3961.10 m^(3)/d by using the equivalent medium pore aquifer and using the Qiubuyi formula of groundwater moving to the whole well.According to the known underground drainage data in the mining area,the normal mine water inflow is 3704.99 m^(3)/d and the maximum mine water inflow is 4350.37 m^(3)/d by analogy method.According to the comprehensive analysis,it is easy to produce errors in the calculation of hydro-geological parameters by analytical method,and the results can only be used as a reference.Compared with the empirical formula,the calculation is simple,the calculation parameters are relatively reliable,and the results are more in line with the actual situation of the mine.Therefore,the analogy method should be used to predict the mine water inflow in ZaozigouGold Mine.

关 键 词：矿坑涌水量 地下水 水文地质特征 早子沟金矿 甘肃省 

分 类 号：P641.4+1[天文地球—地质矿产勘探]