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地下水库是水资源人工调蓄研究领域中的热点问题,在水资源开发利用与保护方面都具有独特优势,是实现水资源可持续开发利用的重要途径之一。中国西北干旱半干旱地区山前凹陷带储水构造富含地下水,为地下水库的建设提供了良好的自然条件。本文以新疆温宿县台兰河坎儿井式地下水库试验研究为例,综合分析了研究区水文地质条件,探讨了地下水库运行试验方案,并从补水、取水和输水3个方面分析了建设地下水库的关键技术问题,其中重点介绍了取水试验。结果表明,采用天然的河、沟入渗补水最具有可持续性,利用渗渠入渗效果最好;辐射井取水试验结果表明,地下水库的出水量可达1000m~3/h,是普通管井取水能力的4倍,可及时满足取水的需求;输水由正虹吸输水管段和无压输水管段组成,通过总长3.4km的输水管将地下水引出地面,并输送到当地的灌溉渠系之中,在无需耗电的前提下,将地下水库与用户有效衔接起来。现场试验结果表明,坎儿井式地下水库工程是可行的,可以向条件相似的地区推广应用。
Underground reservoirs are the hot issues in the field of artificial water storage and control. They have unique advantages in the development, utilization and protection of water resources and are one of the important ways to realize the sustainable development and utilization of water resources. The water storage structure in the piedmont depression in the arid and semi-arid regions of Northwest China is rich in groundwater, which provides good natural conditions for the construction of underground reservoirs. In this paper, a case study of the Karez type underground reservoir in the Tailan River in Xinjiang Uygur Autonomous Region was taken as an example. The hydrogeological conditions in the study area were comprehensively analyzed, and the experimental scheme for the operation of the underground reservoir was discussed. The groundwater was analyzed from the aspects of water supply, The key technical issues of the library, which focused on the water intake test. The results show that using natural river and trenching seepage seepage water is the most sustainable, and infiltration by seepage canal is the best. The water intake test results of radial well show that underground water reservoir can reach 1000m ~ 3 / h, Water supply capacity of 4 times to meet the demand for water in a timely manner; water from the positive siphon water pipe and non-pressure pipe sections, through a total length of 3.4km of the water pipe to ground water and transported to the local irrigation system , Under the premise of no power consumption, the underground reservoir and users effectively link up. Field test results show that the Karez type underground reservoir project is feasible and can be applied to similar conditions in the region.