小净距隧道是介于分离式隧道和连拱隧道之间的隧道结构形式，该结构形式比连拱隧道施工工艺更简单，且易于防水处理和造价控制。
Small clearance tunnel is a tunnel form between separated tunnel and multi-arch tunnel. It is much easier to construct, waterproof and control the cost.
小净距隧道是介于分离式隧道和连拱隧道之间的隧道结构形式，该结构形式比连拱隧道施工工艺更简单，且易于防水处理和造价控制。
Small clearance tunnel is a tunnel form between separated tunnel and multi-arch tunnel. It is much easier to construct, waterproof and control the cost.
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