矿区水文地质环境进行评价.doc

摘 要 极度干旱沙漠气候条件下的主要生态环境问题是：矿床开采疏干地下水引起地下水位下降，是否致使沙丘活化产生的人为沙漠化扩张。即矿床疏干引起的水文地质环境问题。矿井涌水量问题是困扰矿井下安全的大问题，本文针对朱拉扎嘎金矿地质条见和矿井通水量预测进行了分析，并对矿井涌水量进行了预测 珠拉扎嘎金矿构造位置位于华北地台北缘，横穿内蒙古东西的高家窑—乌拉特后旗—化德—赤峰深大断裂带由北部通过。矿区属低山丘陵区，最高海拔高度1434m，最低1381m，相对高差53m。区内属寒温带的大陆性干旱气候，全年多风少雨，多年平均降水量117.7mm、蒸发量2972.0 mm（20cm口径蒸发器），蒸发量为降水量的25.25倍，降水量多集中在7～8月份。区内基岩出露较好，构造裂隙发育，水系不发育。 本文利用数学模型分类的方法来预测金矿涌水量，计算出现状露天开采疏干区：矿坑正常涌水量为584.48m3/d，矿坑最大涌水量为3407.25m3/d；远景露天开采疏干区：矿坑正常涌水量为873.39m3/d，矿坑最大涌水量为6107.55m3/d。依据预测结果，对水文地质环境进行评价。 关键词:珠拉嘎拉金矿 水文地质条件 矿井涌水量 数学模型 Abstract The major problems of ecological environment extremely arid desert climate conditions is: Mining of Groundwater groundwater level decline, whether the dune activation resulting desertification expansion. The deposit drainage hydrological and geological environment problems caused by. Mine inflow is big problem of mine safety, aiming at the Zhulazhaga gold deposit geology and mine water flow prediction is analyzed, and the water yield of mine was predicted Zhulazhaga gold structural position is located in the northern margin of the North China platform, across the west of Inner Mongolia Gao kiln - wulatehouqi - Germany - Chifeng deep fault zone from the North through. Mining area is a hilly area, the highest elevation of 1434m, the lowest 1381m, relative height 53m.The continental arid climate zone belongs to cold temperate zone, the windy rain, precipitation, evaporation (117.7mm 2972 mm 20cm diameter evaporator), evaporation is 25.25 times the amount of precipitation, precipitation concentrates in 7 ~ August. Bedrock area dew better, tectonic fissures, undeveloped drainage system. In this paper, using the method of mathematical model to predict the gold inflow classification, calculation in open-pit mining drainage area: the normal discharge is 584.48m3\/d, maximum water yield of mine is 3407.25m3\/d; prospect of open-pit mining drainage area: the normal discharge is 8