Foundation pit drainage system and construction method thereof

Abstract

The invention relates to a foundation pit drainage system. The foundation pit drainage system comprises water blocking structures arranged on the inner walls of the periphery of a foundation pit and aplurality of precipitation wells located at the periphery of the foundation pit, wherein a block stone layer, a pressure bearing pipe and a water guide pipe are arranged in each precipitation well, the block stone layer is located on the outer wall of the pressure bearing pipe, the water guide pipe penetrates through an inner cavity of the pressure bearing pipe, and a plurality of water guide holes are formed in the pressure bearing pipe. The foundation pit has the advantages that water in a certain number of precipitation wells excavated in advance around the foundation pit is discontinuously discharged by workers before the foundation pit excavation process or in the foundation pit excavation process, the underground water level at the periphery of the foundation is lowered below the bottom of the foundation pit, the bottom of the foundation pit is always kept in a dry state, the phenomenon of quicksand is reduced, and the probability of water and soil loss phenomenon is reduced.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a foundation pit drainage system and a construction method thereof. Background technique [0002] With the development of the economy, people's demand for construction is getting higher and higher, coupled with the shortage of land resources, the buildings are getting higher and higher, and the functions are becoming more and more complex, which greatly increases the load of the building, and the corresponding foundation The pressure to be withstood will increase. If the underground compensation work is not done well, the building will be cut off and collapsed easily. [0003] The drainage technology in the foundation pit is applied to the underground compensation work, which can discharge the groundwater reasonably, avoid the infiltration of groundwater into the foundation pit, cause the phenomenon of water seepage in the foundation pit, reduce the bearing...

AI Technical Summary

Problems solved by technology

[0004] However, when workers excavate a large-scale foundation pit in a water-rich soil layer below the groundwater level, if they encounter powder and fine sand layers, serious slurry, mud, and quicksand phenomena will occur, resulting in a large amount of water and soil. loss, which in turn leads to the loss of stability of the surrounding slopes, resulting in subsidence of the nearby ground

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