Tunnel inverted arch concrete water seepage crack treatment process
A concrete and concrete surface technology, applied in tunnels, tunnel linings, drainage, etc., can solve problems such as incomplete water seepage treatment of tunnel cracks, crack repair and reinforcement without reinforcement, and failure to solve extrusion effects, so as to improve the overall construction quality , to avoid drainage channel blockage, the effect of simple structure
Active Publication Date: 2021-06-04
CHINA RAILWAY NO 5 ENG GRP +1
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Problems solved by technology
[0004] However, in the comparison document, the method of grouting and water blocking is used to solve the problem of water seepage in cracks. This method of drilling and grouting for cracks does not completely deal with water seepage in tunnel cracks, and fails to solve the squeeze of groundwater on the inverted arch. The problem caused by the function, and there is no reinforcement of the crack or its repair and reinforcement, it is easy to have problems again in the follow-up operation, which brings safety hazards
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Embodiment 1
[0043] Such as figure 1 As shown, this embodiment provides a tunnel inverted arch concrete water seepage crack treatment process, including slit slotting, drilling grouting, drilling water diversion, waterproof and drainage construction, trench sealing and channel drainage inspection process, specifically including the following steps :
[0044] Step 1, construction preparation: Conduct a comprehensive investigation on the inverted arch concrete surface 1, mark the water seepage crack 2, take pictures of it to confirm and draw its floor plan, and mark the water seepage crack 2 found in the investigation with red spray paint;
[0045] Step 2, slit slotting: such as figure 2 As shown, remove the mud and debris on the surface of the seepage crack 2, draw fine lime line marks on both sides of the center line of the seepage crack 2, and use a marble cutting machine to cut out the slit 3, and then use an electric pick along the slit 3 The concrete at the position of the water seepa...
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Abstract
The invention provides a tunnel inverted arch concrete water seepage crack treatment process. The tunnel inverted arch concrete water seepage crack treatment process comprises the following steps that step 1, construction preparation is carried out, specifically, a water seepage crack is marked; step 2, joint cutting and grooving are carried out, and an inverted trapezoidal groove and a rectangular groove are formed; step 3, drilling and grouting are carried out; step 4, drilling and water diversion are carried out, specifically, water diversion holes are formed along the water seepage crack; step 5, waterproof and drainage construction is carried out, drainage hoses are arranged in the rectangular groove, and geotechnical cloth and waterproof plates are laid on the upper parts of the drainage hoses; step 6, a foundation trench is sealed, the inverted trapezoid groove is filled with trench sealing concrete for sealing, when the inverted trapezoidal groove is closed, the drainage hoses are pulled out until the whole inverted trapezoidal groove is completely closed, a whole drainage channel is formed, and the drainage channel is connected into tunnel side ditches on the two sides of the inverted arch; step 7, maintenance and protection are carried out; and step 8, channel drainage inspection is carried out. The tunnel inverted arch concrete water seepage crack treatment process can repair and reinforce the tunnel inverted arch crack, is provided with the drainage channel, and has waterproof, water plugging and drainage effects, so that the problem of water seepage of the tunnel crack is radically and thoroughly solved.
Description
technical field [0001] The invention specifically relates to a technology for treating water seepage cracks in tunnel inverted arch concrete. Background technique [0002] Geological changes in the tunnel and the existence of groundwater and crevice water. Since the tunnel invert is not designed with a waterproof board, the groundwater directly disturbs the invert. Coupled with the difference in its own settlement and deformation, cracks or even water seepage occur in the concrete of the invert. [0003] Reference document: Chinese Invention Patent Publication CN111140264A, publication date 20200512, discloses a method for treating water seepage from cracks in tunnel concrete lining structures, which includes the following steps: S1. Confirm the water leakage point; S2. Drill and set grouting holes; S3, grouting hole cleaning and / or cleaning; S4, burying the grouting pipe; S5, sealing the grouting hole; S6, grouting; and S7, surface treatment. [0004] However, in the compa...
Claims
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Login to View More IPC IPC(8): E21D11/38E21D11/10E21F16/02
CPCE21D11/38E21D11/10E21F16/02
Inventor 陈智能邹青张治辉王胜黄宜伟夏友芳
Owner CHINA RAILWAY NO 5 ENG GRP