Underground excavation tunnel ingate construction method
A construction method and technology of horse head gate, which are applied in the direction of tunnel, tunnel lining, earth drilling and mining, etc., to achieve the effect of convenient operation
Inactive Publication Date: 2020-09-29
CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP
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[0005] The embodiment of the present application provides a construction method for the Matou gate entry of an underground excavation tunnel to solve the technical problem that the traditional Matou gate entrance construction of an underground excavation tunnel is not suitable for opening a Matou gate from a small section to a large section
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Embodiment 1
[0028] figure 1 It is a flow chart of a construction method for entering the Matou Gate of an underground excavation tunnel according to an embodiment of the present application.
[0029] Such as figure 1 As shown, the underground excavation tunnel Matoumen entrance construction method of the maglev train of the embodiment of the present application includes:
[0030] Step S100: Obliquely excavate the auxiliary structure 2 from the edge of the hole 11 outwards, and dig the initial support 21 of the auxiliary structure, and set up the supporting structure 31 of oblique excavation; wherein, the hole 11 and the auxiliary structure 2 Adjacently arranged, the section of the auxiliary structure 2 is larger than the section of the hole 11, and the initial support 21 of the auxiliary structure is located at the periphery of the auxiliary structure 2;
[0031] Step S200: In the direction away from the hole 11 in the lateral direction, carry out underground excavation construction on ...
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The embodiment of the invention provides an underground excavation tunnel ingate construction method. The method comprises the following steps that underground excavation construction is carried out on an accessory structure in a manner of inclining outwards from the edge of an opening, underground excavation is carried out until an accessory structure underground excavation primary support to form an inclined cavern, and an inclined excavation supporting structure is arranged in the inclined cavern, wherein the opening is adjacent to the accessory structure, a section of the accessory structure is larger than a section of the opening, and the accessory structure underground excavation primary support is located on the periphery of the accessory structure; underground excavation construction is carried out on the accessory structure underground excavation primary support in a direction away from the opening transversely, a forward transverse cavern is formed, and an ingate supporting structure is arranged in the forward transverse cavern; and underground excavation construction is carried out on the accessory structure underground excavation primary support in a direction close tothe opening transversely, a reverse transverse cavern is formed, an ingate supporting structure is arranged in the reverse transverse cavern, and an underground excavation primary support space is formed in the transverse direction. According to the method, the technical problem that traditional underground excavation tunnel ingate construction is not suitable for forming an ingate from a small section to a large section is solved.
Description
technical field [0001] The present application relates to the technical field of excavated tunnel engineering, in particular, to a construction method for entering a Matou gate of an excavated tunnel. Background technique [0002] In urban rail transit projects, it is a common method to adopt the underground excavation method for construction. In the underground excavation tunnel, various situations of opening horse head gates will be encountered, especially when the section changes, opening the horsehead gate from the large section to the small section The head gate is relatively easy, and the situation will be different if the horse head gate is opened from a small section to a large section. In the underground excavation method, when the auxiliary construction is used in the subway project, it is often encountered that the auxiliary construction is carried out from the main structure of the station. The section of the opening is smaller than the space of the auxiliary pr...
Claims
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IPC IPC(8): E21D9/00E21D9/14E21D11/00E21D11/10E21D11/15
CPCE21D9/00E21D9/001E21D9/14E21D11/00E21D11/105E21D11/152
Inventor 李长安国斌罗章波郎瑶刘雪斌黄新连高煌李平定刘力周丁恒
Owner CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP
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