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Advanced pre-grouting construction method using HSC grouting materials

A construction method and technology of grouting materials, which are applied in mining equipment, earthwork drilling, wellbore lining, etc., can solve problems such as construction safety, impact on construction progress, unsatisfactory grouting effect, etc., and achieve water inrush problems and easy setting time Control and improve the effect of construction progress

Inactive Publication Date: 2018-11-06
CHINA RAILWAY SIXTH GROUP +1
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Problems solved by technology

However, when the single-liquid cement slurry, cement slurry, and cement-sodium silicate double-liquid slurry encounter a water inrush caused by confined water when they need to cross geological faults or are rich in groundwater, the grouting effect is not ideal, which affects construction safety. seriously affect the construction progress

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  • Advanced pre-grouting construction method using HSC grouting materials
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  • Advanced pre-grouting construction method using HSC grouting materials

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Embodiment Construction

[0025] The advanced pre-grouting construction method using HSC grouting material provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] like figure 1 — Figure 4 As shown, the advanced pre-grouting construction method that adopts HSC grouting material provided by the invention comprises the following steps carried out in order:

[0027] 1) When encountering water inrush caused by confined water when crossing geological faults or rich in groundwater during the construction of underground excavation tunnels, firstly, the construction personnel shall work from the outside to the inside on the tunnel surface within the outline of the underground excavation tunnel. Mark the multi-circle drilling rings 1-1-1-N. The position and quantity of these drilling rings shall be based on the section size of the tunnel excavated, the geological conditions of the surrounding rock, the position of the ...

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Abstract

The invention discloses an advanced pre-grouting construction method using HSC grouting materials. The advanced pre-grouting construction method using the HSC grouting materials comprises the steps that a drilling ring is marked on a tunnel face; the hole site of a grouting hole is marked on the drilling ring; holes are drilled at the hole site to form the grouting hole; installation is carried out in the grouting hole; a grouting pipe is inserted in an orifice pipe; a grouting system is installed; and HSC grouting fluid is injected into the grouting pipe for advanced pre-grouting and other steps. The advanced pre-grouting construction method using the HSC grouting materials fundamentally solves the water inrush problem in the construction of a subsurface tunnel and can ensure the safety of the whole construction process. Compared with other construction methods in the prior art, the whole construction process is in a safe, stable, rapid and high-quality controllable state, the construction efficiency is improved, safety risks and construction costs are reduced, and the construction process is easy to operate and control.

Description

technical field [0001] The invention belongs to the technical field of underground tunnel reinforcement, in particular to an advanced pre-grouting construction method using HSC grouting materials. Background technique [0002] With the rapid development of the construction industry, there are more and more construction projects for underground tunnel construction. As an important auxiliary method in tunnel construction, advanced pre-grouting reinforcement technology has played an important role in preventing tunnel collapse, controlling surface settlement, and inhibiting stratum displacement. [0003] Under the background of the existing tunnel reinforcement technology of underground excavation, the grouting reinforcement material used for advance pre-grouting reinforcement is usually single-liquid cement slurry or cement slurry, cement-water glass double-liquid slurry. Due to the long setting time of the single-liquid cement slurry and it is difficult to control, the setti...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/10
CPCE21D9/002E21D11/10
Inventor 魏炜祁敢吴鹏刘星浩
Owner CHINA RAILWAY SIXTH GROUP
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