Basement anti-floating system based on low horizontal grout curtain and depressurization through water drawing

Abstract

The invention relates to a basement anti-floating system based on a low horizontal grout curtain and depressurization through water drawing. The basement anti-floating system comprises a dewatering well structure and the horizontal grout curtain. The dewatering well structure comprises a dewatering well, a water storing pool, a water pump and a water level sensor. The dewatering well is arranged on a basement bottom plate on the periphery of a basement. The well opening of the dewatering well is directly connected to the ground. The bottom of the dewatering well penetrates into the position below the basement bottom plate. The water storing pool is arranged under the basement bottom plate and communicated with the dewatering well. The water pump and the water level sensor are arranged in the water storing pool. The water level sensor is connected with the water pump. The water level sensor is arranged under the basement bottom plate Compared with the prior art, the negativity and passivity of frequently-used methods for resisting the underground water buoyance at present are overcome, and the effect of basement anti-floating is achieved in two aspects that the buoyance of the underground water is reduced and the upper resistance for balancing the underground water buoyance is increased; the basement anti-floating system is suitable for regions where the requirement for the environment is high, the basement buried depth is large and the underground water level is high, and has good market value.

Description

technical field [0001] The invention relates to the technical field of underground engineering design and construction, in particular to a basement anti-floating system based on low-level curtains and pumping and depressurization. Background technique [0002] When building a building or structure in an area with a relatively high groundwater level, if a basement is designed, it will inevitably need to withstand a large buoyancy of the groundwater. The more floors there are in the basement, the deeper the embedding depth, the greater the buoyancy of the basement, the greater the internal force of the floor that directly bears the buoyancy of the water, and the corresponding increase in the reinforcement of the floor. At the same time, due to the existence of water buoyancy, the basement has an unstable tendency to float upwards, which will have an adverse effect on the upper structure. Therefore, the stability of basements under the buoyancy of groundwater is the first prob...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a basement anti-floating system based on low-level curtains and pumping and depressurization in order to overcome the defects in the above-mentioned prior art, which overcomes the passivity of the methods commonly used today to resist groundwater buoyancy, and reduces groundwater The buoyancy of the basement and the increase of the buoyancy resistance of the upper balanced groundwater are two aspects to solve the problem of anti-floating in the basement. At the same time, compared with the method of only using groundwater to reduce the buoyancy of the groundwater, it can well reduce the hidden danger of ground subsidence caused by pumping. It is especially suitable for areas with relatively high environmental requirements, large burial depths in basements, and high groundwater levels, and has good market value.

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