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首页> 外文会议>International Conference on Integrated Water Resources Management and Challenges of the Sustainable Development >Groundwater Dams, a Promise Option for Sustainable Development of Water Resources in Arid and Semi-Arid Regions
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Groundwater Dams, a Promise Option for Sustainable Development of Water Resources in Arid and Semi-Arid Regions

机译：地下水坝，干旱和半干旱地区水资源可持续发展的承诺选择

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摘要

Groundwater dams are structures that intercept or obstruct the natural flow of groundwater and provide storage for water underground. They have been used in several parts of the world. Their use is in areas where flow of groundwater vary considerably during the course of the year, from very high flows following rain to negligible flows during the dry season. The basic principle of the groundwater dam is that instead of storing the water in surface reservoirs, water is stored underground. Many main advantages of water storage in groundwater dams can be utilized in comparison with the surface storage. There are two main types of groundwater dam: the sub-surface dam and the sand storage dam. A sub-surface dam intercepts or obstructs the flow of an aquifer and reduces the variation of the level of the groundwater table upstream of the dam. It is built entirely under the ground. The sand storage dam is constructed above ground in stages and layers.V arious materials may be used for the construction of groundwater dams. Materials should be waterproof, and the dam should be strong enough to withstand the imposed soil and water loads. Dams may vary from 2 to 10 meters high. Groundwater dams cannot be a universally applicable as these require specific conditions for functioning. The best sites for construction of groundwater dams are where the soil consists of sands and gravel, with rock or a permeable layer at a depth of a few meters. Ideally the dam should be built where rainwater from a large catchment area flows through a narrow passage.
机译：地下水坝是拦截或阻碍地下水的自然流动的结构，并为地下提供储存。他们已在世界的几个地区使用。他们的使用在地下水的流动期间在一年中变化的地区，从雨后雨后的雨水忽略不计的流动。地下水大坝的基本原理是，而不是将水储存在表面贮存器中，水将储存地下。与地面存储相比，地下水坝中储水的许多主要优点可以使用。地下水大坝有两种主要类型：子地面坝和砂储罐。子表面坝拦截或妨碍含水层的流动，并降低了大坝上游地下水台的水平的变化。它完全在地面建造。砂储坝在地面上构造，阶段和层面的层可用于地下水坝的结构。材料应防水，大坝应足以承受施加的土壤和水负荷。大坝可能会从2到10米高之间变化。由于这些需要特定的功能，地下水坝不能是一个普遍适用的。地下水坝建造的最佳场地是土壤由砂和砾石组成的地方，岩石或渗透层的深度为几米。理想情况下，大坝应该建造在来自大型集水区的雨水流过狭窄的通道的地方。

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