钻井或挖掘井
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获取地下水资源不是一件轻而易举的事情,本节将讲解许多不同类型的钻井方法(钻井深度及费用各不同)。例如,据说非洲的地下水资源比其他大洲更为丰富。尽管如此,使用机器钻井对于大部分非洲人而言费用太高。与使用机器钻井相比,人工钻浅井(最深35米)的费用降低4到10倍。费用降低后,非营利性组织和政府就能钻取更多的水井,同时村民、农民、学校和小型社区可以在私有企业的援助下自主钻取水井。
气候变化因素
随着气候变化(如干旱),一些地方的地下水可能会逐渐干涸,因此可能需要钻取更深的水井(费用也会更高)。由于在干旱时含水层的水量变少,就应该避免上层滞水含水层(含水层比水位还高)。滨海含水层可能会遭到咸水的影响,因此一定要检查水质。
Contents
Field experiences
These projects may be utilizing manual digging or drilling and are part of the project listing in Really Simple Reporting (RSR) on Akvo.org.
Manual drilling comparison of methods
Manual drilling links
- VIDEO: Manual drilling and pump installation, Madagascar by The Water Channel.
- Human-Powered Drilling Technologies, Richard Carter, Cranfield University, 2005.
- Groundwater and climate change in Africa: The Kampala Statement. Richard Taylor, University College London (UK), IAH Commission of Groundwater & Climate Change.