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An anti-seepage method for construction of underwater caps in areas with dissolved pores and dissolved pores

A technology for developing areas and dissolving gaps, applied in infrastructure engineering, construction, etc., can solve problems such as high construction cost, poor plugging effect, and long disposal time

Active Publication Date: 2021-09-10
CCCC SECOND HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional installation methods have the following disadvantages: (1) The workload of grouting plugging method is long, and the plugging effect is poor when the water head difference of the cofferdam is large; (2) The construction cost of setting drainage cushion drainage High, when the structure size of the underwater cap is large, the drainage channel is easy to block, and there is a risk of water seepage again during the construction of the cap

Method used

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  • An anti-seepage method for construction of underwater caps in areas with dissolved pores and dissolved pores
  • An anti-seepage method for construction of underwater caps in areas with dissolved pores and dissolved pores
  • An anti-seepage method for construction of underwater caps in areas with dissolved pores and dissolved pores

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figure 1~3 , this embodiment is used for anti-seepage treatment of the underwater cofferdam. After the cofferdam 1 is put in place, the bottom sealing concrete 2 is poured in the cofferdam 1, and then all the water in the cofferdam 1 is drained to form an environment for dry construction. . Observe the water seepage on the surface of the back-sealing concrete 2, confirm the water seepage point on the back-sealing concrete 2, and start plugging at the water seepage point.

[0027] like Figure 1~3 As shown, the blocking structure of this embodiment is an isolation chamber structure, and the isolation chamber adopts a hollow cover structure with an open lower end. As long as the structure meets this condition, it can meet the requirements of this embodiment. What the isolated bin of this embodiment selects is channel ste...

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Abstract

The invention relates to the technical field of construction of underwater caps, in particular to an anti-seepage method for construction of underwater caps in areas where dissolved pores and dissolved pores develop. After the cofferdam is put in place and the pouring of the bottom sealing concrete is completed, the water in the cofferdam is drained, the water seepage points on the bottom sealing concrete are checked, and the water seepage points are blocked, the water collection wells are arranged in the cofferdam, and the sealing Drain the water from the plugged seepage point into the water collection well to ensure that the blocked water seepage point no longer seeps outwards, and then start dry construction of the cap platform in places other than the water collection well in the cofferdam. When the difference between the inner and outer water heads of the cofferdam is small, Use the water pump to discharge the accumulated water collected in the water collection well, remove the water collection well, and dry construct the remaining cofferdam in the installation area of ​​the water collection well. The anti-seepage method of the present invention is simple in construction, easy to obtain materials, has good anti-seepage effect, low construction cost, good pertinence, has great promotion value, and can be widely used in the construction of various underwater caps.

Description

technical field [0001] The invention relates to the technical field of construction of underwater caps, in particular to an anti-seepage method for construction of underwater caps in areas where dissolved pores and dissolved pores develop. Background technique [0002] The cofferdam is used as the water-stop structure for the construction of the underwater cap. When the difference between the internal and external water heads is large and the bridge site is located in the area where dissolved pores and gaps develop, the concrete for the bottom of the cofferdam is poured and the water is pumped for the construction of the cap. There is water seepage through the cracks. If it is not treated effectively, in the process of building cap concrete strength, the water seepage channel along the back cover concrete will further expand to the cap concrete, and the problem of water seepage from cracks will occur, which will affect the construction quality of the underwater cap. The con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/00E02D19/04
CPCE02D19/00E02D19/04
Inventor 董正良陈诚罗航徐海云罗长维郑宗昊曾瑞祥
Owner CCCC SECOND HARBOR ENG
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