A Waterproof System Used in Corrugated Steel Primary Support Structure of Highway Tunnel
A technology for primary support and road tunnels, applied in tunnels, tunnel linings, drainage, etc., can solve problems such as silting, damage to tunnel linings, and reduce drainage effects, etc., to achieve economical and efficient construction, improve waterproofing ability, and improve waterproofing ability Effect
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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 vertical drain pipe 2 and the horizontal drain pipe 3 are both HDPE corrugated pipes.
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