Tunnel full-section building method adopting advanced pre-reinforcement, primary lining and secondary lining
A construction method and advanced reinforcement technology, applied in tunnels, tunnel linings, shaft linings, etc., can solve problems such as tunnel diseases, low construction efficiency, and increased loose area of surrounding rocks, and achieve green construction, improve construction efficiency, and improve modernization horizontal effect
Active Publication Date: 2019-12-20
TONGJI UNIV
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[0002] For tunnels constructed by traditional mining methods, when the surrounding rock conditions are broken, section-by-section construction methods, such as CRD method and double-side-wall pilot pit method, are often used to divide the tunnel section into multiple sections for construction, resulting in low construction efficiency. , repeated construction disturbances caused the continuous increase of the surrounding rock loose area, which in turn led to tunnel accidents during construction or tunnel diseases during operation
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[0029] Figure 1-Figure 5 respectively Image 6 with Figure 7 The cross-sectional structure diagram of A-A, B-B, C-C, D-D, E-E, Image 6 with Figure 7 respectively Figure 1-Figure 5 The cross-sectional structure diagrams of 1-1 and 2-2. When the surrounding rock conditions are poor, the advance pre-reinforcement of the tunnel will require grouting, horizontal jet spraying and other construction methods for reinforcement; when the surrounding rock conditions are good, no inverted arch-related construction will be required, which will be considered according to the actual engineering situation.
[0030] Using this construction method, it is necessary to be equipped with bolter drilling rigs, intelligent assembly of initial support and intelligent grouting trolley behind the wall, intelligent assembly of the second lining and intelligent grouting trolley behind the wall, so as to realize rapid mechanized and intelligent construction of the full section of the tunnel and im...
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The invention relates to a tunnel full-section building method adopting advanced pre-reinforcement, primary lining and secondary lining. The tunnel full-section building method comprises the followingsteps: 1) performing advanced pre-reinforcement in front of a tunnel face, ensuring stability of the face in a tunnel full-section excavation process, and avoiding disturbing surrounding rocks due tosub-area construction; 2) adopting a preliminary bracing intelligent assembly and intelligent backfill grouting trolley to assemble a corrugated steel preliminary bracing as well as backfill groutingfilling of gaps between corrugated steel and surrounding rocks; 3) paving inverted-arch waterproof plates, performing inverted-arch cast-in-place pouring and inverted-arch backfilling, adopting a secondary lining intelligent assembly and intelligent backfill grouting trolley to pave waterproof plates on the rest positions of the tunnel, thereby realizing all-around water proofing; and 4) adoptingthe secondary lining intelligent assembly and intelligent backfill grouting trolley to assemble secondary lining prefabricated dust pieces and to perform backfill grouting, thereby accomplishing construction of a tunnel lining ring and realizing full-section building of the tunnel. Compared with the prior art, the tunnel full-section building method has the advantages of being high in stability,automatic in building, capable of realizing full-section construction, and the like.
Description
technical field [0001] The invention relates to the field of tunnel full-section excavation, in particular to an advanced pre-reinforcement-primary lining-secondary lining tunnel full-section construction method. Background technique [0002] For tunnels constructed by traditional mining methods, when the surrounding rock conditions are broken, section-by-section construction methods, such as CRD method and double-side-wall pilot-pit method, are often used to divide the tunnel section into multiple sections for construction, resulting in low construction efficiency. , Multiple construction disturbances cause the continuous increase of the surrounding rock loose area, which in turn leads to tunnel accidents during construction or tunnel diseases during operation. With the development of construction mechanization and intelligence, and the improvement of the theoretical level of tunnels, the demand for advance reinforcement of the tunnel face and full-section construction is b...
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IPC IPC(8): E21D11/10E21D11/38E21D20/00E21D20/02E21F16/02
CPCE21D11/102E21D11/105E21D11/381E21D20/003E21D20/02E21F16/02
Inventor 谢东武丁文其张清照赵程
Owner TONGJI UNIV