The hydraulic characteristics of deep wells degrade with time. At some point it becomes necessary to determine whether it is economically feasible to renovate these wells, or abandon them and install new ones.
| Title | Etude du vieillissement des forages d'hydraulique villageoise et semi-urbaine en zone de socle cristallin |
| Publication Type | Miscellaneous |
| Year of Publication | 1991 |
| Authors | Ouagadougou, BFCIEH-, Paris, FRBURGEAP- |
| Secondary Title | Serie hydrogeologie / CIEH |
| Pagination | 48 p + annexes (ca. 40 p.) : tab., fig. |
| Date Published | 1991-01-01 |
| Publisher | Comite Interafricain d'Etudes Hydrauliques (CIEH) |
| Place Published | Ouagadougou, Burkina Faso |
| Keywords | boreholes, burkina faso, deep wells, hydrogeology, ivory coast, mali, recommendations, rehabilitation, rural areas, urban areas, well capacity |
| Abstract | The hydraulic characteristics of deep wells degrade with time. At some point it becomes necessary to determine whether it is economically feasible to renovate these wells, or abandon them and install new ones. The data obtained from the hydraulic study is also used predict the productive life of new wells. The wells in this study were installed in a crystalline rock formation as opposed to a sedimentary rock formation. Fifty-eight wells are considered in this study, 34 in Burkina Faso, 13 in the Ivory Coast, and 11 in Mali. The wells in Burkina and Ivory Coast were serving secondary centres and were powered by motorized pumps. The Malian wells had hand pumps and served villages. All technical data are included in the body of the report. It was found that two-thirds of the deep wells in Burkina were abandoned or had severely diminished output within 2-4 years after installation. The wells in Ivory Coast fared slightly better, lasting from 2-6 years. The Malian wells lasted comparitively longer, they were still productive from 9-12 years. It was not considered economically feasible to rehabilitate these wells after such a short working life, so recommendations were made for an updated technical approach. |
| Custom 1 | 212.0, 824 |
| Translated Title | Research into the aging of boreholes for rural and peri-urban water supply and the crystalline basement zone |
