露天矿矿坑涌水量预测及评价——以湖北宜昌某建筑石料用灰岩矿为例

Prediction and Evaluation of Mine Water Inflow in Open-Pit Mine--Taking a Limestone Mine for Building Stone in Yichang,Hubei Province as an Example

【目的】矿坑涌水量预测是矿床水文地质勘查的重要组成部分,是生产设计部门制订开采方案、确定排水能力和制定疏干措施的主要依据,正确预测矿坑涌水量是安全开发矿山的重要工作。【方法】以湖北宜昌某建筑石料用灰岩矿为例,探讨露天矿矿坑涌水量的预测方法。通过分析矿区水文地质条件,构建水文地质概念模型,建立水文地质数学模型,选用水均衡法与解析法两种方法联合估算矿坑涌水量。【结果】预测结果大致符合矿区客观实际。【结论】数据结果可供生产设计部门参考,同时为其他水文地质条件相似的露天矿的矿坑涌水量预测提供了一种案例参考。

[Purposes]Prediction of mine water inflow is an important part of hydrogeological exploration.It is the main basis for the production design department to formulate the mining plan,determine the drainage capacity and formulate the drainage measures.Correct prediction of mine water inflow is an important work for safe development of mines.[Methods]This paper takes a limestone mine for building stone in Yichang,Hubei as an example to discuss the prediction method of mine water inflow in open-pit mine.By analyzing the hydrogeological conditions of the mining area,a hydrogeological conceptual model was constructed,a hydrogeological mathematical model was established,and water balance method as well as analytical method were selected to jointly estimate the water inflow of the mine pit.[Findings]The prediction results are roughly in line with the objective reality of the mining area.[Conclusions]The data can be used for reference by the production design department.At the same time,it provides a case reference for the prediction of mine water inflow in other open-pit mines with similar hydrogeological conditions.