Different-diameter self-adaptive expansion grouting device and reinforcement method at the cracked and damaged part of the second lining of the tunnel

A grouting device and self-adaptive technology, applied in tunnel lining, tunnel, shaft equipment, etc., can solve problems such as high safety risk and aggravation, and achieve the effect of improving overall strength and stability and improving permeability
CN110778332BActive Publication Date: 2021-04-13SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2021-04-13

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Abstract

The invention discloses a different-diameter self-adaptive expansion grouting device and a reinforcement method for the cracked and damaged part of the second lining of the tunnel. It includes a body and a damper, and the damper is arranged at the end of the body; In the direction of the damper, the slurry outlet section, the first expansion section, the second expansion section and the grouting section are arranged in sequence; several slurry outlet holes are evenly distributed on the slurry outlet section; the expanded diameter of the first expansion section greater than the expanded diameter of the second expansion section. The grouting device can realize compacting grouting and splitting grouting at the same time, and improves the overall strength and stability of the reinforced surrounding rock through compacting and splitting filling.
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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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