Implication of Gravity drainage plan on shallow rising groundwater conditions in parts of ArRiyadh City, Saudi Arabia

Journal Article

Al-Othman, Abdulaziz A. . 2011

• رقم العدد: 7
• الصفحات: 1611-1619

مستخلص المنشور

The population increase and stride development in ArRiyadh city has triggered water consumption
exponentially. Excessive utilization of water for domestic and city services has increased infiltration
which in turn has led to water level rise in various parts of the city. Keeping in view, damage to man and
environments, various drainage schemes were constructed with the objective to check continuous
water level rising. The gravity drainages were designed as consisting of horizontal drains collecting
groundwater through gravity action. In this paper, effectiveness of drainage systems in lowering water
levels has been experimentally analysed. The investigations consist of drilling monitoring wells,
performing permeability tests and flow measurements on existing dewatering pipes. The discharge flow
rates were measured using different techniques including Manning's formula. Beside flow
measurements, effect of gravity drainage was analyzed through continuous water level monitoring
within affected areas.