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Construction method for rapidly constructing local underground two-layer well in primary lining stage of subsurface tunnel

A construction method, local technology, applied in tunnel lining, tunnel, shaft lining, etc.

Active Publication Date: 2021-05-14
CHINA CONSTR FIRST BUILDING GRP CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method adopts the method of breaking the tunnel floor structure in a large area. When the local second-story well structure does not form a ring, the tunnel is prone to convergent deformation due to the force of the surrounding surrounding rock, and there are serious safety and quality risks.

Method used

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  • Construction method for rapidly constructing local underground two-layer well in primary lining stage of subsurface tunnel
  • Construction method for rapidly constructing local underground two-layer well in primary lining stage of subsurface tunnel
  • Construction method for rapidly constructing local underground two-layer well in primary lining stage of subsurface tunnel

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[0029] The technical solutions of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods of the application, but the following embodiments are only used to understand the present invention, and the embodiments in the application and the features in the embodiments can be combined with each other , the application can be practiced in a multitude of different ways as defined and covered by the claims.

[0030] see Figure 1-7 , a construction method for quickly constructing a partial underground second-story well in the initial lining stage of a buried tunnel, comprising the following steps:

[0031] Step 1: Excavate the two-story well structure of the tunnel in sections; first excavate the first floor 1 of the two-story well structure, and construct the first floor grid 2; the construction time can be flexibly arranged and the construction sequence can be adjusted.

[0032] Step 2: Make the fi...

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Abstract

The invention provides a construction method for rapidly constructing a local underground two-layer well in the primary lining stage of a subsurface tunnel. The construction method comprises the following steps that 1, a two-layer well structure of the subsurface tunnel is excavated in a segmented mode, the first layer of the two-layer well structure is excavated firstly, and a first-layer grating is constructed; 2, a first-layer bottom plate structure is manufactured, and a T-shaped grating reserved connector is adopted at the corner where the first-layer bottom plate structure and the first-layer grating are connected; and 3, a bottom layer structure of the two-layer well structure is excavated, a grating of the bottom layer structure is connected with the T-shaped grating reserved connector in time, a closed structure is formed, and complete construction is guaranteed. According to the construction method, the safety risk in the process of constructing the local two-layer well through the subsurface tunnel can be effectively reduced, interference to various subsequent constructions is avoided, and the purposes of high efficiency, simplicity and flexibility are achieved. The construction method is simple in construction, safe, reliable, high in flexibility and capable of effectively improving the working efficiency and safety of construction of the local two-layer well in the construction process of the subsurface tunnel.

Description

technical field [0001] The invention relates to the technical field of construction engineering of tunnel construction, in particular to a construction method for quickly constructing a local second-story underground well in the primary lining stage of a buried tunnel. Background technique [0002] With the continuous development and progress of human society, tunnels for various purposes are constantly being built, and the level of tunnel engineering technology is also constantly improving and developing. Due to the limitation of buried depth conditions, surrounding environment and other factors, the underground excavation method is often used for construction in the bustling urban areas with dense buildings and special geological sections. During the construction of the tunnel by the underground excavation method, according to the different functions and bearing capacity of the tunnel, the structure of some areas of the tunnel is in the form of a partial two-storey well. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/15
CPCE21D11/152Y02E10/20
Inventor 李松侯宇璐雷铭张睿李锁辉张艳鹏王道乐三武波陈俐光李桐刘国怀
Owner CHINA CONSTR FIRST BUILDING GRP CORP LTD
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