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A vacuum dynamic consolidation composite drainage system for dredging soft soil foundation

A technology of dynamic consolidation and drainage system, which is applied in basic structure engineering, soil protection, construction, etc., can solve the problem of not being able to effectively reduce the strength of deep soft soil in the soft soil foundation before ramming, and achieve controllable settlement and reasonable cost , the obvious effect of foundation bearing capacity

Active Publication Date: 2020-12-15
中铁二十一局集团第六工程有限公司 +2
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Problems solved by technology

[0003] The invention provides a vacuum dynamic consolidation composite drainage system for blow-filled soft soil foundation, which solves the technical problem that the existing technology cannot effectively reduce the water level before ramming and significantly improve the soft soil strength in the deep layer of the soft soil foundation

Method used

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  • A vacuum dynamic consolidation composite drainage system for dredging soft soil foundation
  • A vacuum dynamic consolidation composite drainage system for dredging soft soil foundation
  • A vacuum dynamic consolidation composite drainage system for dredging soft soil foundation

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Embodiment Construction

[0027] The present invention is described in detail below in conjunction with accompanying drawing:

[0028] A vacuum dynamic consolidation composite drainage system for dredging soft soil foundations, comprising an undisturbed soft soil layer 1, on which a 200mm-thick graded crushed stone initial binding layer 3 is arranged, and a 200mm-thick grade Composite vertical drainage pipe bodies 2 are arranged at intervals on the initial bonding layer 3 with gravel, and vertical drainage core pipes 9 are arranged inside the composite vertical drainage pipe body 2 . A water inlet 11 is provided on the top, a water suction port is provided on the side wall of the vertical drainage core pipe 9, and a water inlet is provided between the outer side wall of the vertical drainage core pipe 9 and the inner side wall of the composite vertical drainage pipe body Tubular filter membrane 10, the top of the vertical drainage core pipe 9 is connected with a horizontal vacuum suction pipe 8, and th...

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Abstract

The invention discloses a vacuum power cementing compound draining system for hydraulic reclamation of a soft soil foundation and solves the problem that in the prior art, the pre-ramming water levelcannot be reduced effectively and the deep soft soil strength of the soft soil foundation cannot be improved obviously. Compound vertical drainage pipe bodies (2) are arranged on a 200mm-thick gradedbroken stone initial combining layer (3) in a spaced manner; vertical draining core pipes (9) are arranged in the compound vertical drainage pipe bodies (2); tubular filter membranes (10) are arrangedbetween the outer side walls of the vertical draining core pipes (9) and the compound vertical drainage pipe bodies (2); the top ends of the vertical draining core pipes (9) are connected to horizontal vacuum water suction pipes (8) and vacuum water suction pumps (7); and a nail-shaped ramming hammer (12) is arranged between two adjacent compound vertical drainage pipe bodies (2) on the top surface of the 200mm-thick graded broken stone initial combining layer (3). The post-construction settlement of the treated soft foundation is controllable and the bearing capacity of the foundation is improved obviously.

Description

technical field [0001] The invention relates to a soft soil foundation treatment system, in particular to a vacuum dynamic consolidation composite drainage system for large-area deep dredging-filled soft soil foundation. Background technique [0002] At present, the economic construction in my country's coastal areas is developing rapidly, and land reclamation on tidal flats is a commonly used method to solve the shortage of industrial land. The soil in the land reclamation area on tidal flats mainly has the following characteristics: the undisturbed soil is mainly silt or silty soft soil, showing low shear strength, high compressibility, large void ratio, high water content, and strong rheology The material composition of the dredger fill is relatively complex, most of which are dredged silt, clay or silt, which has a soft soil with high natural water content, large void ratio, high compressibility, low shear strength and low permeability coefficient. Plastic to flow plast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 李伟温欣倪福来史保真张晓彬王亮王炳麟邹卫东刘春良
Owner 中铁二十一局集团第六工程有限公司
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