Closed type dewatering environment-friendly energy-saving device for deep foundation pit and construction process thereof

Abstract

The invention discloses a closed type dewatering environment-friendly energy-saving device for a deep foundation pit and a construction process thereof, and relates to the technical field of deep foundation pit dewatering. The closed type dewatering environment-friendly energy-saving device for the deep foundation pit comprises a dewatering well, wherein a sliding plate is arranged inside the dewatering well, the top of the sliding plate is fixedly connected with a submersible pump, the inner wall of the dewatering well is sleeved with a retaining ring pipe, the bottom of the sliding plate isfixedly connected with a filtering and cleaning mechanism, and the left side and the right side of the top of the sliding plate are fixedly connected with filter screens. According to the closed typedewatering environment-friendly energy-saving device for the deep foundation pit and the construction process thereof, the problems that the dewatering well is not environment-friendly and energy-saving enough during existing deep foundation pit construction, blocking objects are easy to pump out during well water pumping during dewatering, the construction environment is influenced, the filteringeffect is poor, so that impurities permeate the filter screens and are pumped out by the submersible pump after blocking, meanwhile, the submersible pump consumes more electric energy during blocking, and a motor is easy to damage are solved, and the advantages of energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to the technical field of deep foundation pit dewatering, in particular to a closed type deep foundation pit dewatering environmental protection and energy-saving device and a construction process thereof. Background technique [0002] With the rapid development of new-type urbanization, the scale of buildings has been rapidly expanded, more and more underground facilities are emerging continuously, there are more and more super-large and super-deep basements, and more large-scale buildings are located along the river. , In the coastal area, the underground soil layer with good permeability is often connected with the river water, and the geological data sometimes cannot completely and accurately reflect the geological conditions. With the excavation of the foundation pit, the sand and water at the bottom emerge from the foundation pit, and even piping phenomenon will occur , then it is necessary to take rapid drainage measures. ...

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Problems solved by technology

[0004] In order to solve the problems raised in the above-mentioned background technology, the object of the present invention is to provide a closed-type dewatering environmental protection and energy-saving device for deep foundation pits and its construction technology, which has the advantages of energy saving and environmental protection, and solves the problem of dewatering wells during the construction of existing deep foundation pits. Not enough environmental protection and energy saving. When the well is pumped during precipitation, the blockage is easy to be drawn out, which affects the construction environment, and the filtering effect is not good. After the blockage, the impurity will penetrate the filter and be pumped out by the submersible pump. At the same time, the submersible pump will consume more power and easily damage the motor when it is blocked. question

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