Waterproof system for road-tunnel-corrugated-steel primary support structure

A technology for primary support and road tunnels, applied in the direction of tunnels, tunnel linings, drainage, etc., can solve problems such as damage to tunnel linings, silting, and reduced drainage effects, and achieve the goal of improving waterproofing ability, improving waterproofing ability, and economical and efficient construction Effect

Active Publication Date: 2018-08-03
云南交投集团公路建设有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the construction period, groundwater damage such as gushing water will reduce the stability of the surrounding rock and have a certain impact on the construction equipment; during the operation period, groundwater damage such as seepage water will damage the lining of the tunnel, reduce the service life of the tunnel, and accelerate Corrosion damage of engineering steel and other components
At present, the drainage of tunnels is mainly through the arrangement of circular drainage channels between the surrounding rock and the primary lining. Although the above-mentioned diseases can be solved to a certain extent, the treatment effect is not ideal. The main reason is that the circular drainage channels are easy to squeeze during use. Deformation or silting occurs, thereby reducing the drainage effect

Method used

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  • Waterproof system for road-tunnel-corrugated-steel primary support structure
  • Waterproof system for road-tunnel-corrugated-steel primary support structure
  • Waterproof system for road-tunnel-corrugated-steel primary support structure

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Effect test

Embodiment 1

[0025] refer to Figure 1-6 As shown, the present invention provides a waterproof system for the primary support structure of corrugated steel in highway tunnels. A closed space can be formed between the surrounding rock and the corrugated steel plate primary lining 8, and mortar is filled in the closed space. Since the corrugated steel is a continuous and sealed structure as the primary support, the primary support structure itself can be used as the waterproof system. The first waterproof line, a rubber waterstop 11 is set between two adjacent corrugated steel plate linings 8 and connected by bolts 12 to prevent water leakage in the gap between the two corrugated steel plate linings 8, forming a The second waterproof line of the system, and the inner side of the corrugated steel plate primary lining 8 is provided with an Ω-shaped semicircular drainage pipe 1, and the Ω-shaped semicircular drainage pipe 1 is covered with a geotextile to make it permeable and block solid parti...

Embodiment 2

[0027] On the basis of the above-mentioned embodiments, the annular drainage channels are arranged at intervals along the direction of the tunnel, and the interval of each segment of the annular drainage channels is 4-6m. In order to achieve better results for the annular drainage channels, the annular drainage channels are The layout interval shall be determined according to the strength grade of the surrounding rock.

Embodiment 3

[0029] On the basis of the above embodiments, in order to make the drain pipe have the characteristics of high pressure resistance, good toughness and long life, the longitudinal drain pipe 2 and the horizontal drain pipe 3 are both HDPE corrugated pipes.

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Abstract

The invention discloses a waterproof system for a road-tunnel-corrugated-steel primary support structure. The waterproof system comprises a plurality of circumferential drainage pipes, a plurality oftransverse drainage pipes, two longitudinal drainage pipes and circumferential-and-transverse-drainage-pipe inspection openings, wherein the circumferential drainage pipes adopt semicircle drainage pipes; the transverse drainage pipes and the longitudinal drainage pipes adopt HDPE corrugated pipes; the longitudinal drainage pipes are wrapped with a layer of geotechnical cloth; the transverse drainage pipes are connected with a tunnel drainage ditch; the circumferential drainage pipes, the transverse drainage pipes and the longitudinal drainage pipes are communicated with three-way pipes. The waterproof system for the road-tunnel-corrugated-steel primary support structure is reasonable in design and good in drainage effect, and damage of water to tunnel construction and operation can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of drainage and waterproofing of tunnels, in particular to a waterproofing system for the primary support structure of corrugated steel in highway tunnels. Background technique [0002] In recent years, my country has been vigorously promoting the construction of transportation infrastructure and promoting the rapid development of road transportation. At the same time, the terrain, geology and environmental conditions faced by road tunnels are becoming more and more complex. According to incomplete statistics, 30%-40% of road tunnels in my country have relatively serious water damage problems, and water damage accounts for about 70% of all tunnel disasters. Water damage has a great negative impact on the construction period and operation period of the tunnel. During the construction period, groundwater hazards such as gushing water will reduce the stability of the surrounding rock and have a certain impact ...

Claims

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Application Information

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IPC IPC(8): E21D11/38E21D11/15E21D11/10E21F16/02
CPCE21D11/10E21D11/155E21D11/38E21F16/02
Inventor 喻正富张国辉唐江李树繁蒋文权杨育明周鸿煜丁文其许劲松李文辉严恒李莉李佳佳王小明把春红
Owner 云南交投集团公路建设有限公司
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