Blind ditch drainage structure for anti-floating of underground structures

Abstract

The invention relates to the technical field of water discharging structures used for underground structure up-floating prevention, and discloses a water discharging structure. An underground structure is placed in a foundation ditch, a gap is reserved between the underground structure and the foundation ditch, the blind trench water discharging structure comprises a gridding-shaped blind trench, side blind trenches, water collecting pipes, water collecting wells and self-overflowing openings, wherein the gridding-shaped blind trench is arranged below a base plate of the underground structure, the side blind trenches are arranged between the outer walls of the underground structure and the side walls of the foundation ditch, the water collecting pipes are arranged in the side blind trenches, the water collecting wells are arranged on the end portions of the side blind trenches and communicated with the water collecting pipes, and the self-overflowing openings are formed outside the underground structure and communicated with the water collecting wells. According to the water discharging structure, the gridding-shaped blind trench and the side blind trenches are used, underground water in foundation soil below the base plate of the underground structure can be communicated with the side blind trenches, underground water in rock-soil bodies on the periphery of the underground structure is converged into the side blind trenches, finally the underground water located at the position higher than an up-floating prevention water level is discharged outside the underground structure through the self-overflowing openings, the project investment and the maintenance cost during the underground project use period are greatly saved, forced water discharging can also be carried out through pumps in the water collecting wells and an inspection well, and multi-mode water discharging can be achieved.

Description

technical field [0001] The invention relates to the technical field of drainage structures used for anti-floating of underground structures, in particular to a blind ditch drainage structure for anti-floating of underground structures. Background technique [0002] There is a large amount of groundwater in the gaps of the soil and the fissures of the rock mass, and the groundwater will generate a buoyancy force on the underground structure or depression structure buried in or on the rock mass, such as the foundation pit For underground structures, if the self-weight of the underground structure is less than the upward buoyancy force generated by groundwater, the underground structure will arch or float up, causing cracks and water seepage in the underground structure, which will affect the normal use of the underground structure. In recent years, a large number of underground structures such as high-rise buildings with basements, underground garages, sunken squares, subways ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a blind ditch drainage structure for anti-floating of underground structures, aiming to solve the problem that the drainage structure in the prior art can only adopt the forced drainage method, and it is difficult to realize the self-flowing method of groundwater, so that the maintenance cost is high and the scope of application is small The problem

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