Method for excavating soil from soft soil foundation

A technology for earthwork excavation and soft soil foundation, applied in excavation, infrastructure engineering, construction, etc., can solve the problems of long time consumption, complicated operation, difficult construction, etc., and achieve the effect of low cost, simple operation, and shortened construction period.

Active Publication Date: 2012-07-25
THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for earthwork excavation in soft soil foundation to solve the technical problems of the existing method for earthwork excavation in soft soil foundation, which are complex in operation, difficult in construction, high in cost and long in time.

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  • Method for excavating soil from soft soil foundation

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Embodiment Construction

[0018] The specific technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and examples, so that those skilled in the art can understand the present invention without constituting a limitation on their rights.

[0019] figure 1 The technical principle of the earth excavation method in the soft soil foundation of the present invention is shown. The present invention mainly utilizes high-pressure water to wash away the soil to be excavated, uses water as the carrier of the soil, scours the excavated soil into mud, and then uses a mud pump to drain the settled soil on the side of the field and dry it as an excavation site. Internal backfill or external transportation. The implementation steps are roughly as follows: construction preparation (clear water tank, sedimentation tank construction); ordinary water pump pumps water to the clean water tank; clean water pump sends water to the booster pump; booster pump p...

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Abstract

The invention relates to a method for excavating soil from a soft soil foundation. The method includes following steps: scouring soil into slurry by high-pressure water with the pressure not lower than 0.6MPa; pumping and precipitating the slurry; conveying the slurry out of a field after the slurry is precipitated and dried or filling the slurry into the existing field; and excavating the soil. The method can well protect a building foundation and underground facilities, saves construction cost, shortens construction period, and is simple in operation, convenient in construction and low in cost.

Description

technical field [0001] The invention relates to an earthwork excavation method, in particular to an earthwork excavation method in soft ground. Background technique [0002] Industry norms define soft soil foundation as a weak soil layer with low strength and high compression. It is mainly composed of loose and soft soil with a large content of fine particles such as clay and silt, organic soil with large pores, peat and loose sand and other soil layers. The groundwater table is high, and the filling and structures above it are poor in stability and subsidence. [0003] The general characteristics of soft soil foundation include: 1) The natural water content and void ratio are large. The natural water content is high, generally greater than 35%, close to or greater than the liquid limit; the natural void ratio is generally greater than 1, and most of them are between 1.0 and 2.0. 2) Poor water permeability. Soft soil has strong hydrophilicity, poor water permeability, an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/00
Inventor 唐浩何穆杨晓辉王伟台登红曾海霞张祥虎丘立忠丁熠
Owner THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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