Construction process of tunnel secondary lining waterproof and drainage system
A technology of secondary lining and construction technology, which is applied in the direction of tunnel lining, tunnel, drainage, etc., which can solve the problems of easily reducing the service life of secondary lining and weak structural strength, and achieve the effect of enhancing safety stability and improving construction quality
Pending Publication Date: 2022-07-29
辽宁省市政工程设计研究院有限责任公司
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Problems solved by technology
[0004] However, after research, the applicant found that in the above-mentioned prior art, the secondary lining is only formed by the steel grid, and its structural strength is relatively weak, especially when the capillary anti-drainage board absorbs water, it is easy to reduce the service life of the secondary lining
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[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0025] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0026] like figure 1 As shown, the present invention provides a construction process for a secondary lining waterproof and drainage system for a tunnel, including the following contents...
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The invention discloses a construction process of a tunnel secondary lining waterproof and drainage system. The construction process comprises the steps that the surface condition of a primary lining is checked, a secondary lining construction area is determined, and the secondary lining construction area is divided into a plurality of preset lining areas; the method comprises the following steps: measuring a preliminary lining layer pressure parameter of a first preset lining area through a lining layer pressure measurer, calculating and analyzing the preliminary lining layer pressure parameter to obtain a first anchor rod lining parameter, arranging anchor rods in the first preset lining area, inserting a capillary waterproof and drainage plate into an area between the anchor rods and tightly attaching the capillary waterproof and drainage plate to the surface of a preliminary lining, and arranging a second anchor rod lining parameter in the first preset lining area; a steel bar net rack is hung, a formwork is erected, concrete is poured, and a first continuous lining is formed in the first preset lining area; the lining layer pressure measurer is used for measuring the soil layer pressure of the initial lining layer in the construction process in real time, the preset lining area is supported after the corresponding anchor rod supporting parameters are obtained, and the problem that secondary lining is formed only through a steel bar net rack, and the structural strength is low is solved.
Description
technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a construction process of a secondary lining waterproof and drainage system for a tunnel. Background technique [0002] The traditional construction process of tunnel secondary lining waterproofing and drainage is as follows: first trim the uneven parts of the initial support surface; then install circumferential and longitudinal permeable blind pipes on the initial support surface Perforated bellows are used for perforated bellows, and the circumferential and longitudinal permeable blind pipes are wrapped with geotextile layers, and the circumferential and longitudinal permeable blind pipes are fixed on the surface of the initial support with cement nails; Then lay a geotextile layer and a waterproof board on the initial support surface as a whole, and evenly drive many cement nails on the waterproof board, so that the waterproof board is fixed on the initial support...
Claims
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IPC IPC(8): E21D11/10E21D11/38E21D11/15E21D20/00E21F16/02
CPCE21D11/10E21D11/38E21D11/152E21F16/02E21D20/00
Inventor 耿东阳
Owner 辽宁省市政工程设计研究院有限责任公司