A tunnel disease control method that can repeat grouting and is applicable to special grout

A technology for repeated grouting and tunnel damage, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., to achieve the effects of eliminating drilling damage, avoiding high-altitude operations, and operating safety
CN112901212BActive Publication Date: 2022-03-18CHINA RAILWAY TUNNEL GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY TUNNEL GROUP CO LTD
Publication Date
2022-03-18

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Abstract

The invention discloses a tunnel disease treatment method that can be repeatedly grouted and is applicable to special grout. The treatment method is as follows: Step 1. In the section where the water leakage disease is prone to occur in the tunnel and before and after, the initial support and waterproof layer of the tunnel In between, multiple groups of repeatable grouting component groups are arranged at intervals along the longitudinal direction of the tunnel. Step 2. Connect the two adjacent connecting pipes of the two adjacent overflow tanks near the tunnel ground to a horizontal pipe, penetrate the waterproof layer and the second lining lining horizontally, and extend into the tunnel. The upper connecting pipe serves as The discharge end, the lower connecting pipe is used as the grouting end, which is used to connect with the grouting machine; step 3, close the discharge end, start the grouting machine, the grout is injected from the grouting end, and the grout is delivered through the ring Channel conveying, filling each overflow tank in turn. The method realizes repeated grouting at low cost and high efficiency, and overcomes the problems of poor durability of the slurry material and repeated treatment of diseases.
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Description

Technical field

[0001] The present invention belongs to the field of tunnel disease treatment, and specific to a tunnel disease treatment method that can be repeatedly grouting and can apply to special slurry. Background technique

[0002] In the tunnel project of my country's mine law construction, multi-use "spray concrete first + waterproof board + pouring concrete secondary lining" is used, and the secondary lining and the initial support can be relatively sliding, and the shear force is not transmitted. During the process of engineering practice, the waterproof board often occurs sporadic damage during welding, causing groundwater to invade the waterproof plate damage, soaking the large range of secondary lining, after the reservation of the secondary lining or new micro-cracks penetrate into the tunnel, Form a disease.

[0003] The diseased method currently used is to use a drilling equipment to drill in the water seepage region, embedding the grout tube or expanded nail, a...

Claims

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