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High vacuum well -points dewatering ground treatment method

A well point precipitation and foundation treatment technology, applied in infrastructure engineering, soil protection, construction, etc., can solve the problems of excessive static pore water pressure not easily dissipated, unable to function on soft soil foundation, unable to be promoted on a large scale, etc. The effect of good foundation reinforcement, high construction efficiency and short period

Inactive Publication Date: 2007-12-19
刘汉龙 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, above-mentioned patented method can only produce effect to shallow soft soil foundation within 10 meters, and can't produce effect to soft soil foundation more than 10 meters, and its application is restricted, just can't promote on a large scale
Explosion compaction method is one of soft soil foundation reinforcement methods. It mainly generates shock waves through the explosion inside the soft soil to cause soft soil compaction. At the same time, the explosion also produces super static pore water pressure. However, if there is no drainage channel or the channel is not smooth, The ultra-static pore water pressure is not easy to dissipate and cannot achieve the purpose of soil consolidation

Method used

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  • High vacuum well -points dewatering ground treatment method

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Effect test

Embodiment 1

[0027] As shown in Figures 1 and 2, the well point pipe 1 is vertically inserted in a large area in the reinforced area, the well point pipe is inserted to a depth of 8-18m, the well point pipe 1 is connected to the main water collection pipe 2, and the main water collection pipe 2 is connected to the vacuum pump 3 , Start the vacuum pump 3 to drain water and lower the groundwater level, and the shallow foundation soil is consolidated. Pull out the well point pipe, arrange vibratory rolling machine 4 or dynamic ramming equipment 5 on the ground of the reinforced area, start the vibratory rolling machine 4 or dynamic ramming equipment 5 to make the shallow foundation soil in the reinforced area compact, and make the shallow layer The pore water in the soil skeleton is precipitated. Withdraw the vibratory rolling machine or dynamic compaction equipment, and drill a number of explosion holes 6 to 8 to 18m with a drilling rig. The explosion holes 6 are arranged in a triangle or qu...

Embodiment 2

[0029] As shown in Figures 1 and 2, insert the well point pipe 1 vertically in the reinforced area. The depth of the well point pipe is 8-18m. 3 Drain down the groundwater level and consolidate the shallow foundation soil; pull out the well point pipe, and use a drilling rig to drill out the well point explosion holes 6 to 8 to 18m. 12m, place one or several vertical tubular explosives 7 and lead out fuses 8 along the depth in the blast hole 6, the explosives 7 are blocked and separated by sand and gravel 9, and the explosives in the explosives are water-resistant plastic explosives. Ignite the fuse 8 to detonate the explosive package 7 in the deep foundation explosion hole, so that the deep foundation soil is compacted, and the pore water in the deep soil skeleton is separated out; the vibration rolling machine 4 or the dynamic compaction equipment 5 are arranged on the ground to start the vibration The rolling machine 4 or the dynamic tamping device 5 compacts the shallow fo...

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Abstract

The present invention relates to a method for treating various soft soil stratum ground bases. Said method is characterized by adopting underground deep-layer blasting compaction technique and ground surface shallow-layer vibration ramming technique and making them be combined with high-vacuum well-point dewatering technique so as to implement treatment of soft soil stratum ground base with large area.

Description

technical field [0001] The invention relates to a large-area deep soft soil foundation treatment method, in particular to a shallow-layer vibratory compaction and deep-layer explosive compaction combined high-vacuum well point dewatering foundation treatment method. It belongs to the technical field of foundation treatment. Background technique [0002] Before the present invention was made, ZL01127046.2 described a soft ground treatment method of high vacuum compaction method in the large-area soft ground treatment method, that is, the method of high vacuum well point precipitation plus vibration rolling or dynamic compaction is used to reduce the The water content of the treated soil is used to improve the compactness of the soil. The inventive method has short construction period, low construction cost and good treatment effect. The main disadvantage of this method is that due to the limited energy of vibration rolling or dynamic compaction, the depth of foundation trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/02E02D3/10
Inventor 刘汉龙徐士龙
Owner 刘汉龙
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