Cross-operation construction method of foundation pit dewatering well and earthwork

Abstract

The invention relates to the technical field of building construction, and discloses a cross-operation construction method of a foundation pit dewatering well and an earthwork. The cross-operation construction method of the foundation pit dewatering well and the earthwork comprises the steps that the intersection of a foundation pit protection slope and the initial surface of an groundwater levelis used as a construction position of the dewatering well; after the completion of the construction of the dewatering well, the dewatering operation is started, and the earthwork is excavated; duringthe excavation of the earthwork, part of the dewatering well is cut off until the earthwork is excavated to the initial surface of the groundwater level; and the excavation of the earthwork is continued until the excavation of a foundation pit is completed. The problem of completing the well point dewatering construction in a narrow construction site is solved. By constructing the dewatering wellon the foundation pit protection slope, the outer edge of a building structure is avoided, the construction working surface of a building external-wall structure is not affected, the narrow distance between an upper pit line of the foundation pit and a construction fence is avoided, the hidden safety hazard is eliminated, dewatering operation can be performed while the earthwork is constructed, sothat the bottom of the foundation pit is always kept dry.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for cross-operation between a foundation pit dewatering well and earthwork. Background technique [0002] At present, on the construction site, the dewatering wells for the common well point dewatering construction are generally arranged on the top of the foundation pit, which is conducive to the construction of the dewatering well and can still pump water in the process of backfilling the fertilizer tank. However, due to the shortage of land, many construction sites have narrow spaces and the outer edge of the building structure is too close to the construction enclosure. As a result, when the earthwork is excavated, the top line of the foundation pit is too close to the construction fence, even less than one meter. When the groundwater level is high and the deep foundation pit requires dewatering operations, it is impossible to construct the...

AI Technical Summary

Problems solved by technology

However, due to the shortage of land, many construction sites have narrow spaces, and the outer edge of the building structure is too close to the construction enclosure.

It directly leads to the excavation of the earthwork, the upper line of the foundation pit is too close to the construction enclosure, even less than one meter

When the groundwater level is high and the deep foundation pit requires dewatering work, it is impossible to construct a dewatering well on the top of the foundation pit

[0003] When the surrounding area of ​​the foundation pit is too narrow and the top of the foundation pit cannot be arranged with a dewatering well, the dewatering well can be arranged at the bottom of the foundation pit after the earthwork operation is completed. However, during the excavation process, due to the high groundwater level Wet soil increases the construction difficulty of earthwork excavation

Or, arrange temporary dewatering wells during the excavation of the earthwork, and then arrange dewatering wells at the bottom of the foundation pit and in the working face outside the outer edge of the structure after the excavation of the foundation trench is completed, but this will increase the construction cost

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