如图纸无特殊要求,衬砌背后之流水应排入隧道内侧排水沟或中央排水管内。
When there are no particular requirements on the Drawings, water flow behind the lining shall all be drained into the inner side ditch of the tunnel.
如图纸无特殊要求,衬砌背后之流水应排入隧道内侧排水沟或中央排水管内。
When there are no particular requirements on the Drawings, water flow behind the lining shall all be drained into the inner side ditch of the tunnel.
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