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Tunnel ground surface directional large-diameter deep hole grouting device and grouting method

A grouting device and large-diameter technology, which is applied in tunnels, tunnel linings, excavations, etc., can solve the problems of long time consumption and high hidden costs, and achieve the effects of improving stability, reducing grouting difficulty, and increasing grouting reinforcement speed

Pending Publication Date: 2020-10-23
THE 3RD ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the advanced grouting process in the cave must be a design and construction process of "grouting a section, excavating a section, and reserving a section". The tunnel face is a single-process operation, which takes a long time and has high hidden costs

Method used

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  • Tunnel ground surface directional large-diameter deep hole grouting device and grouting method
  • Tunnel ground surface directional large-diameter deep hole grouting device and grouting method
  • Tunnel ground surface directional large-diameter deep hole grouting device and grouting method

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Embodiment

[0068] see figure 1 and figure 2 , the present embodiment provides a directional large-diameter deep hole grouting device on the surface of the tunnel, including: a base layer 8, and a grouting channel is drilled on the base layer 8;

[0069] A sleeve 7, the sleeve 7 is inserted into the grouting channel;

[0070] A plastic valve tube 1, the plastic valve tube 1 is inserted into the sleeve 7, and the outer surface of the plastic valve tube 1 is attached to the inner wall of the sleeve 7;

[0071] A slurry outlet 6, the slurry outlet 6 is arranged on the plastic valve tube 1;

[0072] A rubber one-way valve 5, the rubber one-way valve 5 is arranged on the sleeve 7;

[0073] A grouting core tube 3, the grouting core tube 3 is arranged in the plastic valve tube 1, and the grouting core tube 3 is provided with a grouting port 4;

[0074] Grouting pipe 9, one end of the grouting pipe 9 communicates with the slurry core pipe 3, and the sealing ring 2 is sleeved on the outside o...

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Abstract

The invention discloses a tunnel ground surface directional large-diameter deep hole grouting device and a grouting method. The tunnel ground surface directional large-diameter deep hole grouting device comprises a grouting passage drilled in a foundation layer; a grout outlet is formed in a plastic valve pipe; a rubber one-way valve is arranged on a casing; a grouting core pipe is arranged in theplastic valve pipe; a grouting mouth is formed in the grouting core pipe; one end of a grouting pipe communicates with the grouting core pipe; a sealing ring is arranged outside the grouting pipe ina sleeving manner; and the external surface of the sealing ring is attached to the internal wall of the plastic valve pipe. The grouting method comprises the following steps of grouting reinforcing ofa ground surface deep hole, sidewalk construction, ground surface cleaning and drilling machine platform dressing, drilling and grouting circulation selection, drilling, mounting of a sleeve valve pipe and grouting. According to the tunnel ground surface directional large-diameter deep hole grouting device and the grouting method, grouting reinforcing and tunnel excavation can be synchronously carried out, the work time can be saved, and moreover, the surrounding rock stability can be effectively improved, and as vertical grouting reinforcing can also be carried out on a deep tunnel, the grouting difficulty is reduced, and the grouting reinforcing speed is increased.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a directional large-diameter deep hole grouting device and a grouting method on the surface of a tunnel. Background technique [0002] In the selection of traditional grouting methods, if the tunnel construction with a buried depth of more than 30 meters encounters the above-mentioned geological problems, most of the grouting in the horizontal direction in the tunnel is ahead of time. The main reason is that after the surface grouting hole exceeds 30 meters, the effective grouting The controllability of the slurry effect range and the difficulty of forming deep holes. [0003] However, the advanced grouting process in the cave must be a design and construction process of "grouting a section, excavating a section, and reserving a section". The tunnel face is a single-process operation, which takes a long time and has high hidden costs Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E02D17/20E02D5/76E02D15/04C04B28/26C04B111/70
CPCC04B28/26C04B2111/70E02D5/76E02D15/04E02D17/20E02D17/202E02D2250/003E02D2300/002E21D11/105C04B7/02
Inventor 李伟王凤喜刘磊张承举乐国成张波窦利伟肖旺军
Owner THE 3RD ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD
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