乌蒙山区革香河流域干旱成因及打井找水模式

地下水是乌蒙山区革香河流域重要的饮用水源,由于地下水发育规律复杂,地形起伏巨大,给地下水的有效开发利用带来了诸多困难,广大地区存在干旱缺水问题。文章利用岩溶地下水综合调查—探测—评价方法,查明革香河流域地下水赋存发育规律,揭示流域内干旱频发的成因机理,归纳总结出向斜蓄水构造、背斜蓄水构造、断层蓄水带和断陷盆地蓄水构造四类典型蓄水构造模式,优选了断层阻水、向斜蓄水、岩性界线阻水、上下阻水和地下河径流带五种富水成井区位,并有效应用于严重干旱缺水区的打井找水工作,定井成功率达到70%以上,解决了流域内2万多人的饮水困难问题,有效服务脱贫攻坚。 

Causes of drought and models of drilling wells for water exploration in the Gexiang river basin of the Wumeng mountains

Groundwater is an important drinking water source in the Gexiang river basin of the Wumeng mountains area. Because of the complex development law of groundwater and the huge topographic relief, the development and utilization of groundwater are facing big difficulties, resulting in water shortage in the vast area. To solve this problem, the hydrogeological investigation team of Institute of Karst Geology used the comprehensive investigation, exploration and the evaluation method of karst groundwater and the combination method of effective geophysical exploration of "three determinations" to clarify the occurrence and development law of groundwater in the study area, reveal the genetic mechanism of frequent droughts in the basin, establish four types of water storage structure models, summarize five types of locations with rich water, and effectively apply them to severe droughts in the water shortage area. The success rate of well location increased more than 70%, which has solved the problem of drinking water for more than 20,000 people in the basin, and effectively aided in the effort of poverty alleviation.