Dewatering construction method for deep foundation pit

Abstract

The invention discloses a dewatering construction method for a deep foundation pit. A water suction pump is included, a second locating ring of a circular ring structure is further included, a plurality of cross bars are arranged on the circumferential outer wall of the second locating ring, the cross bars are provided with support plates correspondingly, the support plates can move on the cross bars in the horizontal direction, and the support plates are distributed at a wellhead in an annular array; and the second locating ring is internally provided with a water suction pipe, the bottom endof the water suction pipe is connected with the water suction pump, a plurality of buffer pieces are further arranged on the side wall of the water suction pipe, the buffer pieces are distributed onthe side wall of the water suction pipe in an annular array, one ends of the buffer pieces are connected with the water suction pipe, and bumper blocks are arranged at the other ends of the buffer pieces correspondingly. According to the dewatering construction method, collision between the water suction pump and the inner wall of a deep well when the water suction pump is put into the deep well is avoided, and the service life of the water suction pump is prolonged.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a deep foundation pit dewatering construction method. Background technique [0002] Foundation pit dewatering means that when the foundation pit is excavated, the groundwater level is higher than the excavation bottom, and the groundwater will continue to seep into the pit. Dewatering work due to pit bottom piping and foundation bearing capacity decline. When dewatering the foundation pit, usually a deep well is excavated first, then a water pump is put into the deep well, and the groundwater in the well is pumped out by the water pump, so as to achieve the purpose of foundation pit dewatering. At present, in the process of putting the water pump into the deep well, the water pump easily collides with the inner wall of the deep well, causing damage to the water pump. In order to avoid collision with the well wall when the water pump is placed, the drainage pipe is ...

AI Technical Summary

Problems solved by technology

At present, in the process of putting the water pump into the deep well, the water pump easily collides with the inner wall of the deep well, causing damage to the water pump. In order to avoid collision with the well wall when the water pump is placed, the drainage pipe is usually made of hard The steel pipe makes it difficult to collide with the inner wall of the deep well when the pump is placed, but it is not convenient for turnover transportation

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