棋盘井地区岩溶找水获重大突破

A Significant Breakthrough ofDiscovering Groundwater in QipanjingKarst Region Inner Mongolia

棋盘井地区位于鄂尔多斯构造盆地北部西缘 ,附近有大片寒武系、奥陶系碳酸盐岩分布 ,发育不同程度的岩溶 ,其中蕴藏有较为丰富的地下水。尤其在岩溶与断裂构造的复合部位成井能获取丰富的地下水 ,是解决当地严重干旱缺水的重要途径之一。我院在实施原地矿部西北找水特别计划中 ,时经三年 ,终于在第四眼井获得成功。单井抽水试验降深 0 .98m,涌水量 4 4 88m3/d,推算增大降深后该井出水量可达 1 0 0 0 0 m3/d。该井水质良好 ,矿化度 0 .52 g/L,且锶、硒含量达到饮用矿泉水标准。

Qipanjing region,which distributes large stretch of carbonate rocks of the Cambrian and the Ordovician system,is situated on the western margin of the northern part of Erduos basin. There is rich groundwater in various degrees of Karst,especially in syntaxis part of Karst and fault tectonic. By drilling boreholes rich groundwater resources can be retained.It’s one of important ways which solves serious drying and lacking of water for local area. A special program of discovering groundwater for the northwest regions which was carried out by former Geology and Mineral Resource Ministry was executed.It took three years a success finally was gained in the fourth well. The drawdown of pumping test of the single well is 0.98m and hydraulic discharge is 4488m3/d. By means of calculating,hydraulic discharge will amount to ten thousandm3/d when the drawdown is added.Water quality is good,the total dissolved solids is 0.52g/l and the Sr and Se content of groundwater come to standards of drinkable mineral spring water.