A construction method for a tunnel located at the slope foot of a mountain

A construction method and tunnel technology, which is applied to tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as high construction risks, mountain vegetation, large environmental impacts, and large engineering quantities, so as to reduce construction risks and facilitate tunnel openings The effect of traffic organization and saving construction land

Active Publication Date: 2016-04-27
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Using this construction method to carry out large-scale excavation on the mountain not only has a great impact on the vegetation and the environment of the mountain, but also has a huge amount of work and a large construction risk

Method used

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  • A construction method for a tunnel located at the slope foot of a mountain
  • A construction method for a tunnel located at the slope foot of a mountain
  • A construction method for a tunnel located at the slope foot of a mountain

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Embodiment

[0022] Example: such as Figure 1-6 As shown, this embodiment relates to a construction method for a tunnel located at the foot of a mountain slope, which is used to construct the inner tunnel 1 and the outer tunnel 4 at the foot of the mountain slope 2. Construction of the retaining wall pile substructure 3-1 (which can also be used as an anti-slide pile) in the pilot tunnel 5 and also serves as the support for the initial support 14 of the arch, and then the retaining wall pile 3 is connected to the ground surface to form the retaining wall pile upper structure 3 -2 and set the method of cable-stayed anchor rod 19 to avoid large excavation of the mountain, protect the surrounding environment of the tunnel, and reduce construction risks. The construction method specifically includes the following steps:

[0023] ① if figure 2 As shown, the right pilot tunnel 5 of the internal tunnel 1 is excavated first, and the initial support of the right pilot tunnel 5 is completed; whe...

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Abstract

The invention relates to a method for constructing a tunnel located at a mountain slope toe. The method comprises the following step: firstly, pilot tunnel of an internal tunnel close to one side of a mountain slope toe is finished; a lower portion structure body of a parapet pile is constructed in the pilot tunnel, and a reinforcement cage is constructed by digging hole on the ground of the mountain slope toe, concrete is poured into the reinforcement cage, and the reinforcement cage and the lower portion structure body are combined into the parapet pile; construction of the internal tunnel is finished; soil body outside the parapet pile is dug out, and meanwhile the parapet pile is reinforced; and finally, the external tunnel construction is finished. The method has the advantages that the lower portion structure body of the parapet pile is constructed in the pilot tunnel so that hole digging depth on the ground of the mountain slope can be reduced, and construction risk is reduced; an upper portion horizontal supporting beam is arranged on the parapet pile and can serve as a preliminary bracing supporting point of an internal tunnel master cave arched part, so that one component has functions of two components; and the method is suitable for a tunnel with small interval, engineering construction land is saved, and traffic organization of a tunnel portal is benefited.

Description

technical field [0001] The invention belongs to the technical field of mountain tunnel design and construction, and in particular relates to a construction method for a tunnel located at the foot of a mountain slope. Background technique [0002] Such as figure 1 As shown, the tunnels at the foot of the mountain slope are generally covered with thin soil and have bias pressure. Now, the construction method of anti-slide piles or pile retaining walls is usually used for slope protection. The specific construction steps are as follows: [0003] ① Construction of anti-slide piles or row of pile retaining walls on the surface to below the inverted arch of the tunnel; [0004] ②Excavate the mountain body within the section of the tunnel, and install anchor (cable) rods against sliding piles or row pile retaining walls while digging; [0005] ③Construction of tunnel open hole; [0006] ④ Backfilling of the open hole of the tunnel. [0007] Using this construction method to car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D11/00
Inventor 薛勇沈艳峰
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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