Mathematics Model And Application Of Horizontal Well Dewatering In The Foundation-pit

Along with the developments of skyscraper, subwsty, long tunnel, etc. The problem that lower the underground water level is increasingly outstanding. During the hole precipitation of the base, The precipitation technology of the perpendicular well is a kind of precipitation technology that is adopted extensively at present. Horizontal well technology, have another name called the well technology of radiation, sets up perpendicular well in the precipitation place, And direction horizontal well in the different degrees of depths of perpendicular well, make groundwater pass the horizontal well to flow into the collect water perpendicular well, Take water out with the water pump again, in order to achieve the goal of reducing the groundwater. The project practice indicates, there is relatively high efficiency in horizontal precipitation.Have done relatively overall retrospect to the basic theory of the influent at first; Have done relatively systematic research to the application of Finite element in influent of seepage. Secondly set up the well mathematics model during the hole precipitation of the base of horizontal well and worked out the three-dimensional finite element calculation procedure. Carry on computational analysis and compare the model with actually with ideal model and project, Have drawn some basic laws during the hole precipitation of the base of well of horizontal well.And as regards seepage question, the boundary of horizontal well is its borehole wall. The rivers in because the well is in charge of has not already been the seepage. But in the horizontal well borehole wall, the hydraulic condttions(boundary conditions) is very difficult to rigorously enforce the setting. But if move at to produce water mouthfuls of place horizontal wells, then here very much easy to determine the boundary conditions.In the three-dimensional question, the treatment drawing water in the shaft is a difficult point. This texts regards the shaft as one well unit equivalent square length of the drum. This procedure can imitate the single well pumps water the chronometer calculates at all point water level in district declines deep with horary variety; Study the sport law of the rivers; solve definitely flow draw water issue wanton boundary the wells of termses, predict that dives under water in the location, Guide and construct and excavate the progress, appraise the rationality of the precipitation scheme.