Mounting method of novel inverted arch precast block capable of improving joint section waterproofness
An installation method and technology of prefabricated blocks, which are applied in the directions of safety devices, drainage, and shaft equipment, can solve the problems of affecting the quality of tunnel construction, poor water-stopping effect, water leakage and seepage, etc., so as to improve the sealing and waterproofing effect, facilitate installation, and prevent accumulation. water effect
Inactive Publication Date: 2020-10-30
SINOHYDRO ENG BUREAU 4
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However, because there is no axial pre-tightening force between the inverted arch blocks, there is basically no compression between the water-stops between the inverted arch blocks, and there are even gaps. The water-stop effect is extremely poor, and water leakage and seepage will occur, affecting the Tunnel Construction Quality
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[0049] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.
[0050] Embodiments of the present patent are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only used to explain the patent, and should not be construed as limiting the patent.
[0051] In the description of this patent, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the descri...
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The invention provides a mounting method of a novel inverted arch precast block capable of improving joint section waterproofness, belongs to the technical field of railway tunnel construction, and isused for solving the technical problem of poor waterproof effect caused by untight joint section compression during laying of an existing railway tunnel inverted arch precast block. During construction, axial pre-tightening force is provided for every two adjacent inverted arch prefabricated blocks through a jacking device, the gap between the inverted arch prefabricated blocks is reduced, a first water stop belt and a second water stop belt on the connecting face are compressed, a first bolt and a second bolt are adopted for fixed connection, and the sealing waterproof effect between the inverted arch prefabricated blocks is improved; accumulated water on the two sides of the inverted arch precast blocks is drained into the drainage ditches through drainage holes and drained away throughthe drainage ditches, accumulated water in a tunnel is prevented, the phenomena of water leakage and water seepage are avoided, and the tunnel construction quality is improved; the inverted arch precast blocks are poured in advance and are convenient to install; the jacking device and a steel rail are connected with the inverted arch precast blocks through spike bolts, uplift threaded sleeves areembedded in the inverted arch precast blocks, disassembly and assembly are convenient, and the construction efficiency is high.
Description
technical field [0001] The invention belongs to the technical field of railway tunnel construction, and relates to a method for installing a novel inverted arch prefabricated block capable of improving internode waterproofness. Background technique [0002] In railway tunnels constructed with TBM roadheaders, the travel of supporting systems behind the roadheader and the operation of the diesel locomotive marshalling for transporting materials must be carried out on the tunnel invert, and the invert is an important part of the tunnel lining and the overall ballast bed . For tunnels constructed by roadheaders, the inverted arch is paved with prefabricated inverted arch blocks while excavating. Therefore, the laying quality of the inverted arch block has an important influence on the smooth construction of the roadheader, the lining quality of the tunnel, the construction quality of the overall ballast bed, and the operation status of the tunnel. [0003] The traditional lay...
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IPC IPC(8): E21D11/40E21D11/08E21D11/38E21F16/02E01B23/00E01B29/00E01B29/26
CPCE01B23/00E01B29/00E01B29/26E21D11/08E21D11/083E21D11/38E21D11/40E21F16/02
Inventor 何京健于建伟刘培玉田光齐保栋徐静程亮亮邓春明
Owner SINOHYDRO ENG BUREAU 4