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Abstract: As part of the Doha South Sewage Infrastructure Project, Contract MTS01- (DSSIMTS01), in Doha (Qatar), 11 shafts need to be excavated, whose depths range from 21m to 43m and diameters vary between 8m and 15m. The hydrogeological configuration of the Qatar peninsula is composed of, from top to bottom, Simsima limestone, Midra shale and Rus calcareous / gypsum formation, with two independent...