矿坑涌水量预测与矿坑排水方案探讨

Prediction of Mine Water Inflow and Discussion of Mine Drainage Scheme

矿床(矿山)水文地质勘查,必须有矿坑涌水量预测与(提出)矿坑排水方案这两项内容。矿坑涌水量一般仅需且必须要预测圈定矿体开采终了阶段的涌水量。露采矿山的矿坑涌水量预测,需要确定合理的径流系数。地下开采矿山的矿坑涌水量预测,应当首选比拟法,次选解析法。矿坑涌水量预测,必须以建立合理的水文地质模型为前提。侵蚀基准面与矿坑排水方式密切相关,是区分人工排水与自然排水的"分界面"。侵蚀基准面是一个相对的概念,应具体矿体具体分析,侵蚀基准面的选取,本质上是一个矿坑排水的经济性问题。

The hydrogeological exploration of mineral deposits(mines)must include the prediction of mine inflow and the proposal of mine drainage.Generally,the inflow of water from mines only needs to be(also must be)predicted and delineated at the final stage of mining.Reasonable runoff coefficient is needed to be predicted about the water inflow of open pit.For the prediction of water inflow in underground mines,the analogy method should be the first choice,followed by the analytical method.The prediction of mine water inflow must be based on the establishment of a reasonable hydrogeological model.The erosion base level is closely related to the drainage mode of mines,and it is the"boundary"to distinguish artificial drainage from natural drainage.Erosion datum is a relative concept,which should be analyzed in detail for specific orebody.The selection of erosion datum is essentially an economic problem of mine drainage.