Sludge soft soil foundation earth rock cofferdam structure and construction method thereof

A technology of silt soft soil and earth-rock cofferdam, which is applied in infrastructure engineering, water conservancy engineering, marine engineering and other directions to achieve the effects of safety and reliability of the anti-seepage system, improving stability and saving costs.

Active Publication Date: 2021-09-03
POWERCHINA HUADONG ENG COPORATION LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can solve the stability problem of the cofferdam on the silty soft soil foundation of underwater construction, and at the same time ensure that the cofferdam structure is reasonable, the deformation is controllable, and the anti-seepage system is safe and reliable

Method used

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  • Sludge soft soil foundation earth rock cofferdam structure and construction method thereof
  • Sludge soft soil foundation earth rock cofferdam structure and construction method thereof

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Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention will be described below in conjunction with specific examples, but it should be understood that the accompanying drawings are for illustrative purposes only, and cannot be interpreted as an explanation of this patent. Restrictions; In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, some known structures and their descriptions in the drawings may Omissions are understandable. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis fo...

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Abstract

The invention provides a sludge soft soil foundation earth rock cofferdam structure and a construction method thereof. The construction method comprises the following steps that S1, filling construction is conducted on a berm bottom ripped-rock and silt squeezing composite area (1) and a berm on the top of the berm bottom ripped-rock and silt squeezing composite area from the bank-off advancing starting end of one bank or two banks of a riverbed, the berm bottom ripped-rock and silt squeezing composite area (1) is circularly constructed until the riverbed is intercepted, and the filling height of the berm is higher than that of a soft soil foundation surface area (12). The stability problem of a cofferdam on a sludge soft soil foundation in underwater construction can be solved, meanwhile, it is guaranteed that the cofferdam is reasonable in structure and controllable in deformation, and an anti-seepage system is safe and reliable.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering construction, in particular to an earth-rock cofferdam structure and a construction method for a silty soft soil foundation. Background technique [0002] In the field of water conservancy and hydropower engineering construction, cofferdams are temporary hydraulic structures used to enclose the construction of permanent hydraulic structures. After the foundation pit is drained, dry construction conditions are formed to ensure the smooth construction of permanent structures. In hydraulic engineering construction, we often encounter soft clay, flushing soil, silt or silty soil and other highly compressible soft soil deposited in modern sea-lacustrine facies. The natural void ratio of these soils is often above 1.0, the saturation is greater than 95%, and the compressibility coefficient Greater than 0.5MPa -1 , the internal friction angle is less than 5°, and the following...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/04E02D31/02E02B3/12E02B3/16E02D3/00E02D15/02
CPCE02D19/04E02D31/02E02B3/12E02B3/128E02B3/16E02D3/00E02D15/02
Inventor 任金明郑南许满山王永明
Owner POWERCHINA HUADONG ENG COPORATION LTD
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