A construction method for foundation pit dewatering well and earthwork intersecting operation

Abstract

The invention relates to the technical field of building construction, and discloses a construction method for intersecting operation between a foundation pit dewatering well and earthwork. The foundation pit dewatering well and earth work cross-operation construction method includes: taking the intersection of the foundation pit slope protection and the initial surface of the groundwater level as the construction position of the dewatering well; Cut off part of the dewatering well during the excavation of the earthwork until the earthwork is excavated to the initial level of the groundwater level; continue to excavate the earthwork until the excavation of the foundation pit is completed. The invention solves the difficulty of completing the dewatering construction at the well point in the narrow construction site. By constructing the dewatering well on the slope protection of the foundation pit, it avoids the outer edge of the building structure and does not affect the working surface of the construction of the outer wall structure of the building. , and avoid the narrow distance between the upper line of the foundation pit and the construction enclosure, and eliminate potential safety hazards. The dewatering operation can be carried out while the earthwork is being constructed, so that 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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