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Gas concentration limit construction of gas tunnel (Series 5)

2021-10-14 00:00:00

The gas concentration rate shall not be greater than 0.3% at any time and at any point of the working area;When the gas concentration at any place of the working area reaches 0.4%, it shall alarm imme...

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Gas work areas in the gas tunnel (Series 4)

2021-10-13 00:00:00

During the construction of gas tunnel, when gas is detected in any part of the tunnel construction section, the construction section from the tunnel entry to the working face is called gas work area;...

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Gas Tunnel Classification (Series 3)

2021-10-10 00:00:00

Gas tunnel can be divided into four categories: slightly gassy, gassy and extrahazardously gassy. For slightly gassy work area of two-lane highway tunnel,full section excavation can be carried out.The...

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Terms used for tunnels with gas (series 2)

2021-09-30 00:00:00

Wind Power lockout to tunnels with gas:when the local ventilator on the tunneling work surface stops running or the gas concentration in the tunnel exceeds the specified value, it can immediately and...

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Terms used for tunnels with gas (Series 1)

2021-09-19 00:00:00

Gas: General term of harmful gas, mainly methane (CH4) that escape from the coal (rock) layer. Gas layer: the layer containing gas. According to the gas origin, it can be divided into coal gas layer a...

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Earth-rock materials in subgrade filling （Series 3)

2021-08-31 00:00:00

1、Use a vibration roller with a dead weight of not less than 18 tons, combined with a tamping roller.Large tonnage towed tamping roller has better rolling effect.2、Beforethe commencement ofconstruct...

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Shandong Great Transportation Technology Co., Ltd.

Gas concentration limit construction of gas tunnel (Series 5)

Gas work areas in the gas tunnel (Series 4)

Gas Tunnel Classification (Series 3)

Terms used for tunnels with gas (series 2)

Terms used for tunnels with gas (Series 1)

Earth-rock materials in subgrade filling （Series 3)

About us

News

Projects

Shandong Great Transportation Technology Co., Ltd.