Deep foundation pit floury soil stratum deep-well well point rainfall construction method and application
A technology of well point dewatering and construction methods, applied in infrastructure engineering, construction, etc., can solve the problems of foundation pits that cannot be dug deep, construction obstacles, mud and quicksand, etc., to improve soil stability, prevent excessive settlement, The effect of preventing longitudinal landslide
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[0062] The present application provides a construction method for deep well point dewatering in silty soil formations of deep foundation pits, which is especially suitable for silty clay formations.
[0063] This application specifically takes Pingchuan Road Station of Phase I Project of Urumqi Rail Transit Line 2 as a typical example for illustration. see figure 1 and figure 2 , The geology of Pingchuan Road Station of Urumqi Rail Transit Line 2 Phase I Project is mainly silty clay stratum with poor stability. According to the geological survey report, there are confined water and phreatic water in the stratum, and the distribution of aquifers is discontinuous. The diving is mainly buried in silt, with a gravel content of about 15%, and up to 20% locally. The roof is buried at a depth of 1.2-4m and a thickness of about 14-17m. The buried depth of the water level is 3-5m, the stable water level elevation is 854.6-856.1m, and the converted water inflow is 454.102m 3 / d, med...
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