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

Active Publication Date: 2016-01-13
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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 following disadvantages fo

Method used

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

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Embodiment 1

[0041] The device for accelerating the consolidation of soft soil by frost heaving and thawing method combined with vacuum preloading, including freezing pipes 14 buried in the soft soil to be drained and reinforced in a dot matrix distribution, and plastic drainage pipes 14 buried in the soft soil to be drained and reinforced in a dot matrix distribution Plate 12, freezing tube 14 and plastic draining plate 12 are staggered, plastic draining plate 12 communicates with water collection tank 19 through vacuum jet pump 11, one end of freezing tube 14 communicates with brine circulation tank 5, and the other end communicates with brine circulation tank through brine pump 6 5 communicates, and the brine circulation box 5 is connected with the brine cooling device.

[0042] Preferably, the brine cooling device includes an ammonia circulation pipeline 5a in the tank arranged in the brine circulation tank 5, and one end of the ammonia circulation pipeline 5a in the tank is connected w...

Embodiment 2

[0062] Frost heaving compaction thawing shrinkage fracturing method combined with vacuum accelerated soft soil consolidation device, including frost heave system and vacuum preloading drainage system.

[0063] Frost heave system, including brine circulation subsystem and ammonia circulation subsystem.

[0064] The brine circulation subsystem includes a brine circulation tank 5 , a brine pump 6 , a brine outlet supervisor 7 , a brine return supervisor 8 , a brine outlet branch pipe 9 , a brine return branch pipe 11 , and a freezing pipe 14 . Its main function is to absorb the heat of the soft soil or ultra-soft silt soil to be drained and reinforced with the brine in the freezing pipe 14, and then pump the brine into the brine circuit branch pipe 11 and the brine circuit main pipe 8 through the brine pump 6 until the brine circulates Box 5, and then the cooled brine passes through the brine outlet main pipe 7, the brine outlet branch pipe 9 and the freezing pipe 14 so that the ...

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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.

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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Application Information

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IPC IPC(8): E02D3/115
Inventor 柏巍朱栋梁孔令伟王仕勇高辉林融冰袁观富
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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