Seepage-proofing and seepage-resisting construction method for foundation pit close to river

Abstract

The invention discloses a seepage-proofing and seepage-resisting construction method for a foundation pit close to a river. According to the construction method, a dye indication method, a technologyof sealing a water seepage point by using a sealed container, a technology of pouring fine stone waterproof concrete in different steps and a technology of sealing a river bed surface by using waterproof concrete are combined, and a water seepage opening is blocked from a water seepage source to solve the water seepage problem. The construction process mainly comprises the steps of carrying out construction preparation; determining a water seepage opening of a karst cave at the bottom of a river bed by using the dye indication method; sealing the vortex position of the water seepage opening through the sealed container; pouring the fine stone waterproof concrete into the sealed container in different steps; meanwhile, pumping water from the foundation pit; after flowing water in the foundation pit is completely stopped, sealing the river bed surface by using the waterproof concrete; and lifting the sealed container to leave the river surface. According to the construction method, the water seepage problem can be solved from the water seepage source, the water seepage point is directly blocked, ultra-large mechanical equipment or complex equipment is not needed, and the mechanical equipment used for construction is simple and is easy and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of building exhaust systems, in particular to an anti-seepage and anti-seepage construction method for foundation pits near rivers. Background technique [0002] In recent years, with the rapid development of urbanization in the country, large-scale construction projects have been carried out all over the country. During the foundation construction of buildings adjacent to the riverside / lakeside, the problem of infiltration of nearby river water into the foundation pit is often encountered. The karst landform features in Guangxi, Yunnan and other regions lead to a large number of underground karst caves in the area, and the surrounding water can easily infiltrate into the foundation pit through the karst caves. The traditional anti-seepage and anti-seepage construction methods include filling sandbags or laying double-row piles or water-stop steel sheet piles near the river surface to form a water-stop curta...

AI Technical Summary

Problems solved by technology

However, the anti-seepage effect of these construction methods is not ideal, and it cannot completely guarantee that the seepage of the foundation pit can be completely stopped, and it will increase the construction period, labor costs, material costs, and mechanical costs.

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