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A rapid anti-seepage consolidation grouting construction method for water-rich tunnel

A technology for consolidation grouting and water-rich tunnels, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as slow construction, weak support, poor water blocking and consolidation performance, and achieve the effect of ensuring construction quality

Active Publication Date: 2021-10-15
高军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned structures are all grouted on the face of the tunnel to consolidate the sand layer, and the single-layer grouting is used for reinforcement, which is not suitable for strong water richness, strong karst development, and groundwater is easy to infiltrate into the cave along the bedrock joints and fissure surfaces. The body section forms a linear and gushing water gushing, coupled with the high head pressure and the existence of confined water, it is easy to form a geology of gushing water and mud. The construction method of ordinary water plugging and sealing grouting construction method is slow, the performance of water plugging and consolidation is poor, and the support is weak

Method used

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  • A rapid anti-seepage consolidation grouting construction method for water-rich tunnel
  • A rapid anti-seepage consolidation grouting construction method for water-rich tunnel
  • A rapid anti-seepage consolidation grouting construction method for water-rich tunnel

Examples

Experimental program
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Effect test

Embodiment 1

[0056] refer to figure 1 , a construction method for rapid anti-seepage consolidation grouting plugging of water-rich tunnels, comprising the following steps:

[0057] S100: Consolidation grouting, first pretreat the consolidation grouting area, reduce the water pressure in the grouting area, then open consolidation grouting holes, and grout and seal the holes. The mouth is smoothed; among them, the primary grouting holes 1 and the secondary grouting holes 2 are staggered with each other, and there are 55 in total, and there are 3 supporting grouting holes 3, all of which are located on the palm surface.

[0058] S200: water blocking grouting, two rings 5 ​​are arranged on steps on the grout-stop wall 6, and 40-46 grouting holes 4 are arranged on the periphery of the two rings 5, and the holes are sealed by the full-hole grouting sealing method and the holes are smoothed.

[0059] refer to Figure 2-3 , S1 includes the following steps:

[0060] S110: Consolidation grouting ...

Embodiment 2

[0072] refer to figure 1 , a construction method for rapid anti-seepage consolidation grouting plugging of water-rich tunnels, comprising the following steps:

[0073] S100: Consolidation grouting, first pretreat the consolidation grouting area, reduce the water pressure in the grouting area, then open consolidation grouting holes, and grout and seal the holes. The mouth is smoothed; among them, the primary grouting hole 1 and the secondary grouting hole 2 are staggered with each other, and there are 55 in total, and there are 3 supporting grouting holes 3, all of which are located on the palm surface.

[0074] S200: water blocking grouting, two rings 5 ​​are arranged on steps on the grout-stop wall 6, and 40-46 grouting holes 4 are arranged on the periphery of the two rings 5, and the holes are sealed by the full-hole grouting sealing method and the holes are smoothed.

[0075] refer to Figure 7 , S1 includes the following steps:

[0076] S110: Consolidation grouting pret...

Embodiment 3

[0091] refer tofigure 1 , a construction method for rapid anti-seepage consolidation grouting plugging of water-rich tunnels, comprising the following steps:

[0092] S100: Consolidation grouting, first pretreat the consolidation grouting area, reduce the water pressure in the grouting area, then open consolidation grouting holes, and grout and seal the holes. The mouth is smoothed; among them, the primary grouting holes 1 and the secondary grouting holes 2 are staggered with each other, and there are 55 in total, and there are 3 supporting grouting holes 3, all of which are located on the palm surface.

[0093] S200: water blocking grouting, two rings 5 ​​are arranged on steps on the grout-stop wall 6, and 40-46 grouting holes 4 are arranged on the periphery of the two rings 5, and the holes are sealed by the full-hole grouting sealing method and the holes are smoothed.

[0094] refer to Figure 8 , S1 includes the following steps:

[0095] S110: Consolidation grouting pret...

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Abstract

The invention discloses a fast anti-seepage consolidation grouting construction method for water-rich tunnels, which belongs to the technical field of tunnel grouting construction and includes the following steps: S100: Consolidation grouting, first pretreating the consolidation grouting area, reducing the amount of grouting The water pressure in the grout area, and then the consolidation grouting hole is opened, and the hole is grouted and sealed. The grouting and sealing hole is sealed by the full hole grouting and sealing method and the hole is smoothed; S200: water blocking grouting, arranged on the grouting wall There are two rings, 40 to 46 grouting holes are set on the periphery of the two rings, and the holes are sealed by the full hole grouting sealing method and the holes are smoothed. Reinforce the support and adopt the method of radial anti-seepage consolidation treatment and axial sealing of the tunnel face to realize rapid construction in the water-rich area and ensure the construction quality of the tunnel.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a fast anti-seepage consolidation grouting construction method for water-rich tunnels. Background technique [0002] When constructing tunnels in water-rich areas, in order to prevent water and sand gushing in the excavation surface, the grouting method generally adopts pre-grouting in fully enclosed deep holes of the tunnel, that is, radial grouting holes along the excavation contour line of the full section of the tunnel, and then, Inject the cement and water glass double liquid slurry prepared in a certain proportion, the slurry permeates and diffuses into the pores of the rock layer or sand layer, and solidifies rapidly, and forms a stone body with a certain strength with the surrounding broken rock blocks, forming a stone body on the excavation surface. The grout-stop wall cuts off the groundwater flow path, [0003] The patent number is CN201610176880.7, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E21D11/38
CPCE21D11/10E21D11/105E21D11/38
Inventor 高军林晓谭发刚熊晓晖黄正凯杨立云贾超吴德兴项小珍李行利张旭东游国平杨超张晓晓徐腾辉
Owner 高军