Method for reinforcement and protection of underwater foundation by pressing and pouring grout and matching with bagged dry mix

An underwater foundation and mixing technology, which is applied in basic structure engineering, basic structure repair, construction, etc., can solve problems such as difficulty, long construction time, and stones washed away, so as to reduce project cost and prevent water flow from continuing. The effect of scouring the substrate

Inactive Publication Date: 2011-07-27
江西中煤建设集团有限公司
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Problems solved by technology

If the traditional method of riprap reinforcement and protection is adopted, the stable stones are easily washed away by the turbulent river water only by their own weight; if the reinforcement protection measures of pouring concrete around the foundation after cofferdams and pumping are used, there are also problems of long construction time and Difficult and expensive problems

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  • Method for reinforcement and protection of underwater foundation by pressing and pouring grout and matching with bagged dry mix
  • Method for reinforcement and protection of underwater foundation by pressing and pouring grout and matching with bagged dry mix
  • Method for reinforcement and protection of underwater foundation by pressing and pouring grout and matching with bagged dry mix

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Embodiment Construction

[0014] An underwater foundation reinforcement and protection method of injection cement slurry combined with bagged dry-mixed mixture, which is to dry-mix cement, sand and gravel mixture on the shore according to the requirements of the designed concrete mix ratio, and mix them according to the total weight of 15kg, 20kg , 25kg in bags of different specifications, with the assistance of divers, the bagged dry mix 4 is stacked at a slope of 1:1 on the part of the bottom of the foundation 2 that has been severely scoured or even partially emptied and the surrounding area, and meets the requirements of the foundation. According to the requirements of the burial depth, the grouting pipe 5 is pre-embedded between the stacked bagged mixture 4. There is a through hole 9 on the grouting pipe 5, and the grouting pipe 5 is connected to the grouting pipe 7 through a two-way joint 6. , after the bagged dry mixture 4 meets water and naturally coagulates, press the grout through the grouting...

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Abstract

The invention relates to a method for reinforcement and protection of an underwater foundation by pressing and pouring grout and matching with bagged dry mix, which comprises the following steps: dry-mixing the mix comprising cement, sand and gravel, bagging according to different weights, stacking the bagged dry mix at the part which is hollow due to flushing and the periphery of the bottom surface of the foundation, simultaneously pre-embedding grout pressing pipes among the well stacked bagged mix, connecting the grout pressing pipes with a grout pouring pipe through two-way joints, performing the operation of pressing and pouring the grout on a working platform on water so as to fill gaps among the bagged dry mix after self-solidification, and finally enabling the bagged mix after the self-solidification and the pressed and poured grout to commonly form integral concrete which is completely jointed with a river bed and the bottom surface of the foundation. The method has the advantages of low cost, good effects and convenience and quickness in construction.

Description

technical field [0001] The invention relates to a method for strengthening and protecting underwater foundations by injecting cement slurry in combination with bagged dry-mixed mixture. technical background [0002] Underwater foundations are widely used in engineering structures such as bridges and water conservancy. According to different structural forms, underwater foundations can be divided into enlarged foundations, pile foundations, caisson foundations, etc. No matter what kind of underwater foundation, river scouring is one of the main reasons for its evacuation, settlement or even loosening. As the components bearing all the loads of bridges and water conservancy structures, the underwater foundation will lead to cracking of the structure if it is evacuated, and its loosening will lead to the collapse of the structure. Today, due to the increase in the frequency and level of floods caused by the increase in extreme weather phenomena, and the intensification of peo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D37/00E02D15/06E02D27/52
Inventor 谌洁君刘宙谌乐强
Owner 江西中煤建设集团有限公司
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