Foundation pit dewatering well construction system

Abstract

The invention discloses a foundation pit dewatering well construction system, and belongs to the technical field of building construction. The foundation pit dewatering well construction system comprises a foundation pit, a first non-drainage well pipe, a second non-drainage well pipe and a plurality of drainage well pipes. The first non-drainage well pipe is arranged at the bottom of the foundation pit, and a first thread is arranged on the outer wall of the top of the first non-drainage well pipe; second threads and third threads are correspondingly arranged on the top outer walls and the bottom inner walls of the multiple drainage well pipes, and the multiple drainage well pipes are in threaded connection through the second threads and the third threads; and a protection structure in threaded connection with fourth threads is arranged at the top end of the second non-drainage well pipe, and a top beam is arranged at the top end of the foundation pit and used for supporting the protection structure. According to the foundation pit dewatering well construction system, the construction efficiency is greatly improved, the detached drainage well pipes cannot be damaged and can be recycled, and the construction cost of cutting off and welding is reduced.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction system for a foundation pit dewatering well. Background technique [0002] With the development of my country's urban process in recent years, the scale of underground space development has gradually expanded, and the number of deep foundation pit projects has also increased. In the foundation pit project, the first task before excavation of the foundation pit is the construction of the foundation pit dewatering well, through which the groundwater level is lowered to below the design depth level of the first excavation, and a waterless work platform is provided for the excavation of the foundation pit , in order to carry out the excavation construction, and with the layered excavation of the foundation pit, it is necessary to reduce the height of the dewatering well in order to provide a safe and convenient construction platform for the construction m...

AI Technical Summary

Problems solved by technology

[0003] In the construction of reducing the height of the dewatering well, a cutting machine is usually used to cut off the dewatering well pipe with a drainage hole in the middle, and then the dewatering well pipe section without openings at the top is welded to the dewatering well buried in the ground, and the dewatering well is cut off by a cutting machine , it is often easy to cause damage to the cut-off part and cannot be recycled, resulting in waste. At the same time, the labor cost for cut-off and welding construction is high and time-consuming, and the construction efficiency is low

Images