Device and method for accelerating consolidation of soft soil through combination of frost heaving and melting shrinking method and vacuum preloading

A soft soil and vacuum technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of treatment depth and treatment effect (limited bearing capacity, long duration of vacuum load, low drainage efficiency, etc., to improve drainage Consolidation efficiency, shortened construction period, and improved drainage efficiency

CN105239557AActive Publication Date: 2016-01-13INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI +1

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
Publication Date: 2016-01-13

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Abstract

The invention discloses a device for accelerating consolidation of soft soil through a combination of a frost heaving and melting shrinking method and vacuum preloading. The device comprises freeze pipes and plastic drain boards. The freeze pipes and the plastic drain boards are distributed and buried in the soft soil to be subjected to drainage and consolidation in a lattice mode. The freeze pipes and the plastic drain boards are distributed in a staggered mode. The plastic drain boards are communicated with a water collecting tank through vacuum jet pumps. One ends of the freeze pipes are communicated with a brine circulating tank. The other ends of the freeze pipes are communicated with the brine circulating tank through a brine pump. The brine circulating tank is connected with a brine cooling device. The invention further discloses a method for accelerating consolidation of the soft soil through the combination of the frost heaving and melting shrinking method and vacuum preloading. A fine-particle soft soil body has an obvious frost heaving phenomenon when freezing, so that a vacuum pressure field is effectively superimposed on a frost heaving compaction pressure field, and accordingly the discharge rate of water can be increased by several times.

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Description

technical field

[0001] The invention relates to the technical field of fine-grained soft soil drainage and consolidation foundation treatment in the field of rock and soil mechanics and engineering, in particular to a device for accelerating soft soil consolidation by combining the frost heaving and thawing method with vacuum preloading, and also relates to frost heaving and thawing This method and device are not only suitable for the reinforcement of various types of saturated soft clay foundations with high sensitivity, but also suitable for all kinds of soils with basically zero initial bearing capacity and mainly fine particles. Simultaneously reinforce the whole range of deep and shallow layers of dredging and dredging silt. Background technique

[0002] At present, vacuum preloading technology and vacuum combined surcharge preloading technology are most commonly used, but both vacuum preloading technology and vacuum combined surcharged preloading technology have the fo...

Claims

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