Comprehensive treatment technology of ventilation, dust -alleviation and purification was successfully applied in the mechanized construction of Lei Gongshan tunnel on Beijing-Jiulong Railway Line.

京九铁路雷公山隧道机械化施工中应用施工通风降尘净化综合治理技术获得成功。

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More and more inclined shafts are built in order to meet the need of tunnel ventilation or speeding up the tunnel's construction progress.

为了满足隧道运营通风需要或为了加快隧道施工进度，设置斜井的情况越来越多。

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Whether the ventilation system is designed reasonable or not can significantly affects the construction of long highway tunnel for its high cost in economy and energy.

长大公路隧道的通风系统工程造价高、运营能耗大，通风系统设计合理与否，对长大隧道工程建设有重要影响。

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