Slurry and anti-seepage segment and tunnel segment lining structure
A tunnel segment and grout stop technology, applied in tunnel lining, tunnel, shaft lining, etc., can solve the problems of wood waste, time-consuming and labor-intensive, grout seepage, etc., to avoid grout leakage and grouting, simple and efficient treatment , the effect of resisting external water pressure
Active Publication Date: 2018-06-15
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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- Description
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Problems solved by technology
[0004] During the stacking process, since the inner and outer surfaces of the existing segments are smooth, in order to facilitate handling and avoid pressure, generally two adjacent segment segments are separated from each other by padding sleepers, which not only causes a lot of waste of wood , and time-consuming
When the segments are installed and grouted, since the grouting space between the ring segments and the rock wall is connected, the grout is easy to flow along the axial direction of the tunnel in the grouting space, and the grouting density cannot be guaranteed; moreover, the grouting Once the pressure is too high, the serous fluid will leak out
Due to factors such as transportation, installation operation, and machine errors, when the water-stop strips are damaged or the water-stop sheets are blistered, deformed or damaged, it is necessary to carry out pointing treatment on the surface of the gaps between the segments. The treatment method is to use cement mortar to plaster the surface. Due to the small contact surface between the cement mortar and the side of the segment, it is easy to crack after being pressed, which cannot fundamentally solve the problem
Method used
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[0020] The present invention will be further described below in conjunction with accompanying drawing.
[0021] Such as figure 1 and figure 2 As shown, the slurry-proof and seepage-proof segment includes a segment body 100, and the segment body 100 includes a convex arc-shaped outer surface 110, and the slurry-proof and seepage-proof segment also includes a Slurry-stopping sheet 200. Wherein, the segment body 100 is an arc-shaped sheet body with a certain thickness. The grout stop sheet 200 is used to prevent the grout of grout from flowing in the grouting space between the segment and the rock wall, so as to improve the compactness of grouting; the grout stop sheet 200 should avoid being set along the width direction of the segment body 100; usually, the grout stop The paddle 200 is poured together with the segment body 100 .
[0022] Specifically, another example figure 1 and figure 2 As shown, the slurry stopper 200 is arranged along the arc length direction of the ...
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The invention discloses a grout-stopping and seepage-proofing segment and a tunnel segment lining structure which can improve grouting compactness. The grout-stopping and seepage-proofing segment comprises a segment body, wherein the segment body comprises a raised arc-shaped outer surface; the grout-stopping and seepage-proofing segment further comprises a grout stop plate arranged on the arc-shaped outer surface. The tunnel segment lining structure comprises at least one lining ring which is axially arranged along a tunnel; each lining ring comprises at least two segments; the segments are the grout-stopping and seepage-proofing segments. Through the grout stop plate arranged on the arc-shaped outer surface, the grouting slurry can be prevented from flowing in a grouting space between the segments and a rock wall, and the grouting compactness is improved.
Description
technical field [0001] The invention belongs to the field of building construction, and in particular relates to a slurry-proof and anti-seepage segment and a tunnel segment lining structure. Background technique [0002] Segment is a prefabricated arc sheet member used for lining support during the tunnel boring machine (TBM) excavation process; it can be used as a temporary support measure for TBM excavation, and can also be used as a permanent support measure for tunnels. When TBM is excavated, there is a supporting segment installation equipment at the rear, which can install the segments exposed to the rock wall immediately after excavation. The segment lining is composed of multi-ring segments along the longitudinal direction of the tunnel, and each segment is connected by multiple segments through circumferential bolts; The wall and the segment form a whole. At this time, the segment can support the locally unstable rock mass, resist external rock pressure and ground...
Claims
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IPC IPC(8): E21D11/08E21D11/38E21D11/00
CPCE21D11/00E21D11/08E21D11/38
Inventor 钟果姚林林张世殊彭仕雄崔中涛
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE