Construction method for repairing tunnel collapse through insertion pipe grouting

A construction method and intubation technology, which are applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problems of rock wall collapse and landslides, affecting tunnel safety, tunnel collapse, etc., achieving high work efficiency, strong operability, Use safe and reliable effects

Active Publication Date: 2013-08-14
CHINA MCC17 GRP
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AI Technical Summary

Problems solved by technology

[0002] With the rapid development of road construction, tunnel construction has also accelerated the pace of construction. The current tunnel construction method is to use fan drilling and blasting on the rock mass. These methods have caused great damage to the rock mass structure during the construction process. Changes, some changes cannot be observed from the appearance, but there are safety hazards such as rock wall collapse and landslides
After the tunnel and the rock mass are poured into shape, there is still a period of stable solidification between the outer wall of the tunnel and the rock wall, and the concrete and the rock wall are combined into one. However, due to reasons such as underground rivers and underground water in karst caves, the tunnel may collapse. Effective repair will affect the safety of the tunnel

Method used

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  • Construction method for repairing tunnel collapse through insertion pipe grouting

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] As shown in the figure: the device in the construction method for repairing tunnel collapse by intubation grouting of the present invention is mainly composed of a high-pressure grouting pump 1, a delivery pipe 2, a porous intubation pipe 3, a mud suction pump 4, and a suction pipe 5.

[0020] High-pressure grouting pump 1: The main function is to pressurize the stirred mud and transport it to the porous cannula 3 through the delivery pipe 2.

[0021] Conveyor pipe 2: High pressure resistant rubber is used, the inner diameter of the pipe is generally between 40mm and 50mm, and the working pressure can withstand 10MPa.

[0022] Porous cannula 3: The cannula is made of metal, and one end is an inner and outer threaded part, which is used to firmly connect with the delivery tube 2. The inner end is in a round closed cone shape to prevent the tube head fro...

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Abstract

The invention discloses a construction method for repairing tunnel collapse through insertion pipe grouting. The construction method for repairing the tunnel collapse through the insertion pipe grouting comprises the following steps of: step 1, drilling operating holes: finding the portion of the tunnel collapse before construction; step 2, drilling to determine the range of the collapse; step 3, cleaning the operating holes; and step 4, inserting an insertion pipe and grouting. The construction method for repairing the tunnel collapse through the insertion pipe grouting has the advantages that the road surface and the internal rock structure of the tunnel are not damaged during tunnel collapse repairing so that the potential safety hazard of the tunnel is eliminated; the usage is safe and reliable, and the working efficiency is high; and the operability is strong, and the construction cost is reduced.

Description

technical field [0001] The invention relates to a construction method for repairing tunnel collapse, in particular to a construction method for repairing tunnel collapse by intubation grouting without damaging the tunnel structure. Background technique [0002] With the rapid development of road construction, tunnel construction has also accelerated the pace of construction. The current tunnel construction method is to use fan drilling and blasting on the rock mass. These methods have caused great damage to the rock mass structure during the construction process. Some changes cannot be observed from the appearance, but there are safety hazards such as rock wall collapse and landslides. After the tunnel and the rock mass are poured into shape, there is still a period of stable solidification between the outer wall of the tunnel and the rock wall, and the concrete and the rock wall are combined into one. However, due to reasons such as underground rivers and underground water ...

Claims

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Application Information

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IPC IPC(8): E21D11/10
Inventor 魏发利
Owner CHINA MCC17 GRP
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