Dewatering earth-taking construction method for foundation pit on water

A construction method and technology of foundation pits, which are applied in basic structure engineering, excavation, ships, etc., to achieve the effect of improving efficiency and reducing project cost

Active Publication Date: 2011-05-25
NO 2 ENG CO LTD OF CCCC THIRD HARBOR ENG CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a construction method for dewatering and taking soil from foundation pits above water, so as to solve many technical problems existing in the existing operation methods

Method used

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  • Dewatering earth-taking construction method for foundation pit on water
  • Dewatering earth-taking construction method for foundation pit on water
  • Dewatering earth-taking construction method for foundation pit on water

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Embodiment Construction

[0009] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0010] There are two large docks, the size of 1# dock is 520m×76m×11.5m, and the size of 2# dock is 510m×116m×11.5m. The docks of the two docks adopt a new type of design and construction technology scheme for the large-scale foundation pit enclosure on the water, and are completely independent of the water.

[0011] The construction of the dock mouth uses steel sheet piles 11 plus steel supports 2 large vertical foundation pit enclosure structures on the water, of which the plane size of the 1# dock dock foundation pit is 98m×28m, and the plane size of the 2# dock dock foundation pit is 128m×28m .

[0012] (1) Enclosure wall structure

[0013] The elevation of the excavation surface of the foundation pit at Wukou is -10.65m, the design high wat...

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Abstract

The invention relates to a dewatering earth-taking construction method for a foundation pit, in particular to a dewatering earth-taking construction method for a foundation pit on water, which is characterized in that the foundation pit is divided into n layers from top down for dewatering earth-taking construction in sequence, a steel bracing is constructed on each layer, and finally excavation is carried out till the bottom of the foundation pit; wet earth-taking method is adopted for earth taking from the first layer to the n-1 layer, or concretely speaking, a sludge pump, a keg float and ahigh pressure water gun form a water and sludge suction group; the high pressure water gun jets high pressure water flow to earth to make the earth become sludge which is sucked by the sludge pump, discharged into a sludge barge by an outflow pipe and delivered to an appointed area to be unloaded, and the dewatering and sludge suction are carried out at the same time; dry earth-taking method is adopted on the n layer.

Description

technical field [0001] The invention relates to a construction method for dewatering and soil-taking of foundation pits, in particular to a construction method for dewatering and soil-taking of foundation pits above water. Background technique [0002] The conventional dock structure of domestic dock projects generally adopts a large cofferdam scheme for onshore construction. For the construction of a certain dock, it is the first time to adopt a large-scale foundation pit enclosure independent of the water, which is similar to applying a large foundation pit completely independent of the water to the dock. in the mouth structure. The construction of foundation pits on water is very different from that on land. The series of construction processes and related technologies involved in pile foundations on water, underwater slope protection, concrete support pouring, steel support installation, precipitation and soil extraction, and enclosure system removal are all limited to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63C1/08E02D19/02E02D17/02
Inventor 钟梅华汤涛孙伟明朱九仪张文渊徐桂强黎亚舟张敏赢章剑果施军刘明权姚娟强包益平杨东金卫林朱立新陈月娇
Owner NO 2 ENG CO LTD OF CCCC THIRD HARBOR ENG CO LTD
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