Reducing self-adaptive expansion grouting device and reinforcing method for cracking and breaking position of tunnel second liner

A grouting device and self-adaptive technology, which is applied in the direction of tunnel lining, tunnel, shaft equipment, etc., can solve the problems of high safety risk and aggravation, and achieve the effect of improving the overall strength and stability and improving permeability
CN110778332AActive Publication Date: 2020-02-11SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2020-02-11

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Abstract

The invention discloses a reducing self-adaptive expansion grouting device and a reinforcing method for the cracking and breaking position of a tunnel second liner. The device comprises a body and a damper. The damper is arranged on the end portion of the body. The body is overall of a tubular structure, and the body is sequentially provided with a grout outflow section, a first expansion section,a second expansion section and a grouting section in the direction away from the damper. Multiple grout outlets are evenly distributed in the grout outflow section. The diameter after expansion of the first expansion section is larger than that of the second expansion section. By means of the grouting device, compaction grouting and splitting grouting can be simultaneously achieved, and by meansof compaction and splitting filling, the overall strength and the safety of reinforced surrounding rocks are improved.
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Description

technical field

[0001] The invention belongs to the technical field of operation tunnel renovation, and specifically relates to a different-diameter self-adaptive expansion grouting device and a reinforcement method for the cracked and damaged part of the second lining of the operation tunnel. Background technique

[0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] In recent years, with frequent abnormal climate changes, especially under the influence of heavy rainfall, many tunnels in China have experienced varying degrees of water gushing and mud gushing, and even serious landslides have occurred, posing a great threat to the normal operation and safety of tunnels. Water and mud inrush in tunne...

Claims

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