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Multi-armed drill jambo curtain grouting construction technology for extra long single-track railway tunnel

A technology for rock drilling rigs and curtain grouting, which is applied in tunnels, tunnel linings, shaft linings, etc., can solve problems such as inability to achieve continuous construction and affect construction progress, improve the stress conditions of surrounding rocks, and prevent falling rocks from hurting people. , good effect

Inactive Publication Date: 2018-09-28
CHINA RAILWAY NO 5 ENG GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to remove the drill pipe after drilling and install the orifice pipe for grouting, which needs to be replaced every cycle, so that continuous construction cannot be realized and the construction progress will be affected.

Method used

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  • Multi-armed drill jambo curtain grouting construction technology for extra long single-track railway tunnel
  • Multi-armed drill jambo curtain grouting construction technology for extra long single-track railway tunnel
  • Multi-armed drill jambo curtain grouting construction technology for extra long single-track railway tunnel

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Embodiment Construction

[0028] Embodiments of the present invention: this embodiment is the construction of Baoshan Tunnel. Baoshan Tunnel DK136+600 (tunnel entrance) ~ DK147+200 (Yanqing fault) is located in (I) groundwater system unit, and the main water-bearing rock group in the area is bedrock Fissure water-bearing rock formations and karst water-bearing rock formations have a great impact on tunnel water gushing, and the concentrated outburst section of the tunnel mainly includes strata in the distribution area of ​​soluble rocks, fault structure development zone, fractured zone at the fold axis, and dense regional joint zone. Fissure water in fault zones: Yazitang fault, Red Luchang fault and Yanqing fault are developed in the Dabaogai syncline water system (I). There are springs exposed, and the water output is used for the living water of residents at the mouth of the ditch; the crevice water in the broken zone of the fold shaft: the syncline core of Dabaogai and the nucleation of Dabaogai bac...

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PUM

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Abstract

The invention discloses a multi-armed drill jambo curtain grouting construction technology for an extra long single-track railway tunnel. According to the multi-armed drill jambo curtain grouting construction technology, the implementation contents comprises modification of a multi-function full hydraulic drill jambo (Atlas XL3D), supporting application of grouting integrated equipment, comprehensive geological prediction, application of monitoring technology, starting conditions of curtain grouting, curtain grouting unit division, curtain grouting process and construction methods, and curtaingrouting standard and effect evaluation. The multi-armed drill jambo curtain grouting construction technology can solve the problem of curtain grouting construction in tunnels crossing bad geologicaland water-rich structural zones, reduces the construction cost, improves the construction efficiency, and shortens the construction period.

Description

technical field [0001] The invention relates to a curtain grouting construction technology for a multi-arm rock drilling jumbo in an extra-long single-track railway tunnel. Background technique [0002] Tunnels and underground projects face various geological risks when passing through strata in soluble rock distribution areas, fault structure development zones, fold shaft fracture zones, karst, high confined water, weak bottom layers, and regional joint-intensive zones. There is a greater possibility of water inrush during excavation. In order to effectively avoid these geological risks, it is necessary to carry out drilling and grouting operations on the unfavorable geological sections ahead to achieve the purpose of water stop and reinforcement of surrounding rock. [0003] Chinese patent CN20099100654476 discloses a three-arm hydraulic rock drilling jumbo and a tunnel drilling and grouting construction method. In this method, a three-arm hydraulic rock drilling jumbo i...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D9/11E21D11/38
CPCE21D9/11E21D11/003E21D11/105E21D11/38
Inventor 蔡明玖吕建秋夏俊勇张小寿付军敖尹魏平开邓火林江西辉
Owner CHINA RAILWAY NO 5 ENG GRP
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