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Double-layer low-position vacuum preload consolidation device and soft soil foundation reinforcing method

A technology of soft soil foundation and reinforcement device, which can be used in soil protection, infrastructure engineering, construction, etc.

Inactive Publication Date: 2009-04-22
TIANJIN WATER RESOURCES RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the above-mentioned problems in the treatment of soft soil foundation, and provide a method that is beneficial to large-area construction, which can not only strengthen the soft soil foundation but also combine dredging, and the dredged silt can be reused after reinforcement, which not only solves the problem A double-layer low-level vacuum preloading reinforcement device and soft soil foundation reinforcement method that solves the difficult problem of land occupation for the mud discharge field and can create economic benefits

Method used

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  • Double-layer low-position vacuum preload consolidation device and soft soil foundation reinforcing method
  • Double-layer low-position vacuum preload consolidation device and soft soil foundation reinforcing method
  • Double-layer low-position vacuum preload consolidation device and soft soil foundation reinforcing method

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Experimental program
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Effect test

Embodiment 1

[0130] It consists of a main controller, a power distribution controller, a vacuum pump (20), a submersible pump (19), a buffer separation tank (30), a control valve (26), a vacuum gauge (27), a vacuum degree probe (21), blowing and filling Reinforcement layer vacuum pipe network (15), soft soil reinforcement layer vacuum pipe network (16), settlement mark (17), open water overflow (18), pipeline and meter (29), on the soft soil foundation (2) Set the boundary of the reinforcement area, fill the cofferdam (1) along the boundary of the reinforcement area, form a soft soil reinforcement layer (14) in the cofferdam (1), and place a settlement mark (17) on the soft soil foundation (2), at least 5 or more.

[0131] The soft soil reinforcement layer vacuum pipe network (16) is set on the soft soil reinforcement layer (14), the soft soil reinforcement layer vacuum pipe network (16) is in the form of a network as a whole, and the blow-fill reinforcement layer (3) is arranged on the so...

Embodiment 2

[0140] On the soft soil reinforcement layer (14) in the cofferdam (1), the dredging-fill reinforcement layer (3) is formed by dredging-filling of silt soil, and open water overflow outlets (18) are arranged around the top of the cofferdam (1), and at least 1 A clear water overflow port (18), the clear water that the dredging and filling silt soil separates out is discharged outside the cofferdam (1) through the clear water overflow port (18).

[0141] On the mud surface of the blow-fill reinforcement layer (3), lay geotextiles, bamboo and brambles repeatedly layer by layer to form a load-bearing isolation layer (8), at least 2 layers, geotextiles, bamboo and brambles to prevent mud from muddying and strengthen the load , enhance workability.

[0142] On the load-bearing isolation layer (8), the blow-fill reinforcement layer vacuum dry pipe (4) is horizontally arranged, at least one, and one end of the blow-fill reinforcement layer vacuum dry pipe (4) is connected with the blow...

Embodiment 3

[0155] The boundary of the reinforcement area is set on the soft soil foundation (2) according to the design drawing, and a cofferdam (1) is filled outside the boundary of the reinforcement area, and the area inside the cofferdam (1) is a soft soil reinforcement layer (14). Make the position of the drainage board (10) of the soft soil reinforcement layer and the position of the vacuum pipe network (16) of the soft soil reinforcement layer, and set up marks. Settlement markers (17) are placed on the soft soil foundation (2), at least 5 or more to monitor the settlement degree of the soft soil foundation (2).

[0156] In the soft soil reinforcement layer (14), insert the soft soil reinforcement layer drainage board (10) at equal distances and equal lengths, the lower end of the soft soil reinforcement layer drainage board (10) is closed, and penetrates longitudinally into the soft soil reinforcement layer (14) .

[0157] On the soft soil reinforcement layer (14), the vacuum bra...

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Abstract

The invention provides a double-layer low level vacuum preloading consolidation device and a soft soil foundation consolidation method. The device consists of a main controller, a power distribution controller, a vacuum pump, a submersible pump, a buffer knockout drum, a control valve, a vacuum gauge, a vacuum degree detecting head, a hydraulic fill consolidation layer vacuum pipe network, a soft soil consolidation layer vacuum pipe network, a subsidence mark, an open water overflow port, pipes and gauge tables, wherein a cofferdam is reclaimed along the consolidation area border in the soft soil foundation, a soft soil consolidation layer is formed in the cofferdam, the soft soil consolidation layer is provided with the soft soil consolidation layer vacuum pipe network and a hydraulic fill consolidation layer, the hydraulic fill consolidation layer is provided with a bearing separation layer and the hydraulic fill consolidation layer vacuum pipe network, and the hydraulic fill consolidation layer vacuum pipe network is hydraulically filled with a sealing layer. The invention has the advantages of reasonable structure, convenient construction, short construction period, low cost, good consolidation effect, facilitation of construction in large areas, consolidation of the soft soil foundation, dredging, and reutilization of the dredged sludge after consolidation, and can solve the problem of difficult land occupation of a blow-off field and create economic benefits.

Description

technical field [0001] The invention relates to a soft soil foundation treatment device for land reclamation engineering, in particular to a double-layer low-level vacuum preload reinforcement device and a soft soil foundation reinforcement method. Background technique [0002] my country's coastal areas are densely populated and the per capita arable land area is very small. With the continuous development of the national economy, the scale of construction in coastal areas continues to expand, and land resources are becoming more and more tense. my country's coasts and rivers are generally reclamation land for economic development and construction, while the coasts and rivers are formed by alluvial silt, with low bearing capacity and low beach elevation, so silt soil and dredging fill soil need to be consolidated for foundation treatment. [0003] At present, there are many methods of foundation reinforcement at home and abroad, and many methods are still in development, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
Inventor 顾立军曹大正冯伟骞刘学功何雅丽赵维江
Owner TIANJIN WATER RESOURCES RES INST
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