Feasibility Study of Boreholes Hand Drilling in Senegal —Identification of Potentially Favorable Areas

Feasibility Study of Boreholes Hand Drilling in Senegal —Identification of Potentially Favorable Areas
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塞内加尔手动钻孔可行性研究——潜在有利区域的识别

DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
D. Sarr
D. Sarr
中科院分区：
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文献类型：
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作者：
Cheikh Hamidou Kane;F. Fussi;Moustapha Diene;D. Sarr

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钻井中常用的钻井技术 非洲非常适合地质构造坚硬和 地下水并不位于更深的地方。因此，对于一个大的 生活在农村地区的人数，获得改善的饮用水 资源往往有限，因为钻探钻孔的成本很高，即 与地理、地质和水文地质因素密切相关。这个 对各种背景的分析表明，为了更好地获得 为服务不足的社区和人口提供安全饮用水，是可能的 考虑成本更低的替代解决方案，与当前的 供水仍然很贵。在本文中，一种简化的钻井 技术以非常低的成本得到了证明：“手工或手工 对于小于40米的深度来说，这是一种实用的解决方案 冲积地形或低阻力岩层中的水点。这个 塞内加尔人工钻井的可行性研究表明，即使它 并不是在全国所有的地质地层中都实用，手工钻探 仍然是降低成本和提高可访问性的替代解决方案 在塞内加尔的几个地区，特别是在塞内加尔河，提供饮用水 山谷，沿北部海岸，在法蒂克和卡萨芒斯沿海地区。这 研究建立了适合人工打孔的区域图； 它旨在加强当地私营部门的能力，以满足日益增长的需求 农村地区的饮用水需求。
Drilling techniques commonly used in Africa are rather well suited for areas where geologic formations are hard and groundwater is not located at higher depths. Thus, for a large number of people living in rural areas, access to improved drinking water sources is often limited, due to the high cost of drilled boreholes that is closely linked to geographical, geological and hydrogeological factors. The analysis of various contexts has revealed that, in order to improve access to safe drinking water for underserved communities and populations, it is possible to consider less costly alternative solutions, compared to current options for water supply which are still expensive. In this paper, a simplified drilling technology at a very low cost has been demonstrated: “the manual or hand drilling”, which is a practical solution for less than 40-m deep water points in alluvial terrains or low resistance rock formations. The feasibility study of manual drilling in Senegal has revealed that, even if it is not practical in all geological formations of the country, manual drilling remains an alternative solution for reducing costs and improving accessibility to drinking water in several areas in Senegal, particularly in the Senegal River Valley, along the northern coast, in Fatick and Casamance coastal zones. This study was used to set up map of areas suitable for manual drilling boreholes; it aims to strengthen the local private sector capacity to meet growing drinking water needs in rural areas.