Your search found 4 records
1 Memon, M.; Arif, P. 1993. Factors associated with deterioration of SCARP tubewells. In Government of Pakistan-USAID Irrigation Systems Management Research Project; IIMI, Proceedings: Irrigation Systems Management Research Symposium, Lahore, 11-13 April 1993. Vol.VI. - Use of database and public tubewell performance. pp.21-34.
(Location: IWMI-HQ Call no: IIMI 631.7.8 G730 IIMI Record No: H012905)
To investigate possible causes of tubewell deterioration, this study based on the available computer database of SCARP tubewells was undertaken. The average rate of decline in the specific capacity over the eight-year operation was used to characterize the performance of tubewells in different SCARPs. This was correlated with different parameters such as acceptance specific capacity, actual discharge in relation to design, development time, lithology, slot size, screen material, and saline and fresh water tubewells. The analysis concluded that some of the above mentioned parameters have a direct relation to the performance of the tubewells.
2 Memon, M.. 1993. Evaluation of mechanical and air surging in wells with fiberglass casing. In Government of Pakistan-USAID Irrigation Systems Management Research Project; IIMI, Proceedings: Irrigation Systems Management Research Symposium, Lahore, 11-13 April 1993. Vol.VI. - Use of database and public tubewell performance. pp.47-54.
(Location: IWMI-HQ Call no: IIMI 631.7.8 G730 IIMI Record No: H012907)
Under ISM/R, two tubewells in the Muridke Unit were selected for evaluating the commonly used method of well rehabilitation. The method consisted of mechanical surging, surging with compressed air and the use of dispersing agents. The well selected represented a badly deteriorated condition and a partially deteriorated condition, and offered a difference in lithology. The effectiveness of the treatment was determined from the amount of material brought in the wells and by changes in the specific capacity. The study has established the efficiency of the surging treatment in dislodging the fine materials and the positive impact of the dispersing agent where clay layers are present. The treatments, while improving the specific capacity, did not restore the badly deteriorated tubewell to its original condition. It therefore surmised that instead of mechanical blockage, there may be other causes of well deterioration.
3 Memon, M.. 1993. Development of methods of tubewells rehabilitation. In IIMI; WAPDA, Irrigation Systems Management Research (ISM/R) Project: Final report: Public and private tubewell performance. 29p.
Tube wells ; Rehabilitation ; Groundwater development ; Waterlogging ; Salinity / Pakistan / Indus River
(Location: IWMI-HQ Call no: IIMI 631.7.8 G730 IIM Record No: H013267)
4 Memon, M.; Arif, P. 1993. Factors associated with deterioration of SCARP tubewells. In IIMI; WAPDA, Irrigation Systems Management Research (ISM/R) Project. Final report: Public and private tubewell performance. 14p.
(Location: IWMI-HQ Call no: IIMI 631.7.8 G730 IIM Record No: H013268)
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