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Half-light and half-dark tunnel entry method

A semi-dark, open-cut tunnel technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve a large number of problems such as grading, hidden safety costs, ecological damage, etc., to achieve small environmental damage, save engineering costs, The effect of high construction safety

Active Publication Date: 2021-02-09
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a semi-dark tunnel entry method for the traditional tunnel construction method, which requires a large number of slopes, destroys the ecology, has potential safety hazards and high cost.

Method used

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  • Half-light and half-dark tunnel entry method
  • Half-light and half-dark tunnel entry method
  • Half-light and half-dark tunnel entry method

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Embodiment Construction

[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0027] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected ...

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Abstract

The invention discloses a half-open and half-hidden tunnel hole heading method. The half-open and half-hidden tunnel hole heading method comprises the following steps that a first row of containment piles are constructed outside a hidden excavation tunnel excavation outline, and a second row of containment piles are constructed on the outer side of an open excavation tunnel outline; hidden excavation tunnel excavation is conducted, and then, a hidden excavation tunnel support structure is constructed; a top beam is constructed on the pile tops of the containment piles, accordingly, the two adjacent containment piles are connected, a top plate is poured in the top beam, and accordingly ground surface traffic is recovered; open excavation tunnel excavation is conducted under covering of thetop plate, when the top elevation is reached, connecting beams are constructed between the containment piles, and middle plates are constructed in the connecting beams; and when the tunnel lower partsoil body is excavated to the tunnel bottom elevation, bottom-layer longitudinal transverse beams are constructed between the containment piles. According to the half-open and half-hidden tunnel holeheading method, environment damage is little, ground surface traffic recovery is fast, construction safety is high, and the engineering manufacturing cost is saved and is low.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a semi-dark tunnel entry method. Background technique [0002] With the construction of a large number of road and railway tunnels, tunnels are spread all over the place, no longer just crossing mountains in the wilderness, and a large number of tunnel projects have also appeared in urban construction. Especially at the entrance and exit of tunnels in the urban core area, it is inevitable that the tunnel direction intersects the existing roads at a small angle, resulting in a thicker covering layer on one side and a thinner covering layer on the other side. There are also some tunnels in the city. These tunnel projects are restricted by the surrounding buildings and run parallel to the slope. The method of underground excavation requires a lot of resources to reinforce the soil, and there are still great safety hazards. However, the open cut method requires a large a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D11/00E02D29/045
CPCE02D29/045E21D9/00E21D11/00
Inventor 李科吴胜忠肖博方林王道良丁浩余顺郝坤江星宏
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST