昆阳磷矿二矿地下开采矿坑涌水量预测

Prediction of water inflow of underground mining pit in the second mine of Kunyang phosphorite

本文通过对矿区资料综合研究,分析了矿床含隔水层水文地质特征、断裂构造特征水文地质、地下水补径排特征,分析了矿床充水水源、充水通道等充水因素,厘清了矿床水文地质边界,认为矿床水文地质条件中等;在此基础上,结合矿山开采设计方案,选择解析法—“大井法”和“狭长水平坑道法”建立计算模型,分别计算预测了地下水矿坑涌水量;经分析对比后,推荐“大井法”为矿坑地下水涌水量预测方法,推荐了估算涌水量,可为矿坑疏排水提供依据。

Based on comprehensive research on data of mining area, the paper analyzes the hydrogeological characteristics of water-resisting layer and fracture structure characteristic of deposit and groundwater runoff characteristic, analyzes the filling water factors such as deposit water filling source, and water filling channel,to clarify the hydrogeological boundary of the deposit, think the hydrogeological conditions as medium;On this basis, combined with the mining design scheme, Analytical method-"big well method" and "long and narrow adit method" is chosen to establish a calculation model, we separately calculated and predicted the water flow of groundwater pit;After comparison, we recommended "big well method" for the predict method of the water flow of groundwater pit. The estimating water inflow was recommended, The basis is provided for the pit drainage.