Construction method of digging and conveying earth of deep foundation pit through current scour

Abstract

The invention relates to the construction field of earthwork projects of sand soil or fine-grained soil foundation pits, in particular to a construction method of digging and conveying earth of a deep foundation pit through current scour. The construction method includes the step of supporting and portioning the foundation pit, the step of digging a mud sucking pool, the step of installing a mud pump, the step of installing a high-pressure water pump and a water supplying water tank, the step of digging a soil abandoning area, the step of installing a mud conveying pipe and middle pressurizing equipment and the step of digging soil through current scour, and finally the mud is conveyed to the soil abandoning area through the mud conveying pipe, the mud sediments in the soil abandoning area, and clean water after sedimentation is discharged or reused. The construction method of digging and conveying earth of the deep foundation pit through current scour has the advantages that (1) the scheme of digging and conveying soil through hydraulic power well resolves the problem of work stoppage caused by road traffic control; (2) soil is conveyed through a water current pipeline instead of a land route, so that the influence on the city road traffic from large earthwork trucks is reduced; (3) the construction scheme of digging and conveying soil through hydraulic power lowers construction noise; (4) no large earthwork truck passes near the foundation pit in the construction process, and loads on a surrounding and protective structure are reduced.

Description

technical field [0001] The invention relates to the construction field of foundation pit earthwork with sandy soil or fine-grained soil, in particular to a construction method for digging and transporting deep foundation pit earthwork by using water flow to scour. Background technique [0002] With the development of high-rise buildings and urban underground spaces in our country, the scale and quantity of foundation pit projects are constantly expanding, which puts forward higher requirements for construction. The construction of foundation pit earthwork mainly includes excavation and transportation. The conventional construction method is mechanical and manual excavation and large-scale earthwork vehicle transportation. It has the following disadvantages: (1) The traffic control in the city's prime location limits the large-scale earthwork. The traffic of vehicles, coupled with the impact of the inability to construct during the rainy season, often leads to the shutdown of...

AI Technical Summary

Problems solved by technology

The construction of foundation pit earthwork mainly includes excavation and transportation. The conventional construction method is mechanical and manual excavation and large-scale earthwork vehicle transportation. It has the following disadvantages: (1) The traffic control in the city's prime location limits the large-scale earthwork. The traffic of vehicles, coupled with the impact of the inability to construct during the rainy season, often leads to the shutdown of the project; (2) The noise of traditional mechanical excavation construction is loud, which seriously affects the normal life of the surrounding residents; (3) The process of transporting large earthwork vehicles often causes dust to fly, Pollution along the road environment

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