Foundation pit drainage structure and construction method thereof

Abstract

The invention relates to a foundation pit drainage structure and a construction method thereof, and belongs to the technical field of civil construction. The foundation pit drainage structure comprises an upper drainage ditch, a lower drainage ditch and a drainage well, wherein the upper drainage ditch and the drainage well are arranged above a foundation pit slope, the upper drainage ditch communicates with the drainage well, the lower drainage ditch is arranged below the foundation pit slope and is formed in the bottom of a foundation pit, a lower drainage channel is installed in the lower drainage ditch, the lower drainage channel is embedded in the lower drainage channel and supports a foundation pit slope, and a supporting rod is arranged on the side, away from the foundation pit slope, of the lower portion of the lower drainage channel in an extending mode in the direction away from the foundation pit slope. The method has the effect that the foundation pit slope is not prone to instability.

Description

technical field [0001] The application relates to the field of civil construction, in particular to a foundation pit drainage structure and a construction method thereof. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base level and foundation plane size. When excavating a foundation pit, the groundwater level is higher than the bottom surface of the excavation, and the groundwater will continue to seep into the pit. In order to ensure that the foundation pit can be constructed under dry conditions, and to prevent slope instability, foundation quicksand, pit bottom uplift, pit bottom piping and foundation Decreased bearing capacity requires foundation pit precipitation. The methods of foundation pit dewatering mainly include: open ditch plus water collection well dewatering, light well point dewatering, jet well point dewatering, electroosmosis well point dewatering, deep well well point dewateri...

AI Technical Summary

Problems solved by technology

[0003] At the same time, after the foundation pit is dewatered, it is also necessary to set up a drainage structure at the foundation pit, so as to reduce the rainwater flowing into the foundation pit during later construction. The existing drainage mechanism is usually to dig a drainage ditch outside the foundation pit, through which the excess The water is diverted to other places, but the excavation of the drainage ditch will easily reduce the correlation of the part of the foundation pit slope located on both sides of the drainage ditch, and it is easy to cause the foundation pit slope to become unstable

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