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Vertical-shaft construction method

A construction method and shaft technology, applied in excavation, infrastructure engineering, construction, etc., can solve problems such as the impact of groundwater, achieve the effects of shortening the construction depth, shortening the construction period, and reducing the impact on the surrounding environment

Active Publication Date: 2017-03-08
SHANGHAI MECHANIZED CONSTR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a shaft construction method to solve the impact of groundwater on construction during shaft construction

Method used

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Embodiment Construction

[0044] The core idea of ​​this application is to adopt the method of underwater construction for the deeper part of the shaft during the construction of the extra-deep shaft foundation pit, so as to offset the pressure of the confined water outside the shaft to a certain extent; Steel trusses 4 are added to the concrete to solve the problem of overall stress on the bottom concrete block and the enclosure wall 1 .

[0045] The shaft construction method proposed by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0046] refer to figure 1 , which shows the flow chart of...

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Abstract

The invention provides a vertical-shaft construction method which comprises the following steps: constructing an enclosing diaphragm wall; performing shallow excavation of a vertical shaft; injecting water into the vertical shaft subjected to shallow excavation, and excavating the rest of the vertical shaft in the water; bottoming the vertical shaft; and constructing a lining wall of the vertical shaft. The construction method provided by the invention solves the problem of deep underground confined water in foundation pit engineering, and mainly aims at the excavation of very deep vertical shafts; through the adoption of excavation without water draining, the vertical-shaft construction method solves the problem that the confined water is required to be dropped during the excavation process of a foundation pit and greatly reduces the influence on the surrounding environment, especially in excavation construction of a foundation pit in the central area of a city; and further, through the adoption of excavation without water draining, the construction depth of the enclosing diaphragm wall is reduced, so that the construction period is shorted.

Description

technical field [0001] The invention belongs to the technical field of foundation pit engineering construction, and mainly relates to a shaft construction method, which is suitable for extra-deep shaft construction. Background technique [0002] At present, there are many problems in the construction of ultra-deep shafts. Among them, the problem of deep groundwater treatment needs to be solved urgently. Deep groundwater will have a certain pressure on the shaft, which will affect the construction of the shaft. Generally, the depth of the ultra-deep shaft is more than 60m. If dewatering measures are adopted, it will inevitably have an impact on the surrounding environment of the shaft, especially in the central area of ​​the city where dewatering foundation pits are excavated, and the construction risk of reducing deep confined water is high. The conventional measures are to use dewatering wells, water barrier curtains and recharge simultaneously method, but for the construct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/06
CPCE02D17/06
Inventor 吴欣之陈晓明杨宏伟严时汾过浩侃罗鑫贾宝荣蒋明星应晔吴晓风李晓娇刘颖李操周铮周蓉峰
Owner SHANGHAI MECHANIZED CONSTR GRP
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