railway or highway tunnel 中文意思是什麼
railway or highway tunnel
解釋
函洞-
It is applied to drill heavy duty pretension anchor holes at side slope of water power station, railway or highway projects, to drill drainage holes and grouting pile holes on roof of tunnel gallery
適用於水電站鐵路公路邊坡大噸位預應力錨固孔排水孔隧道口管棚孔的施工,以及預防滑坡巖石坍塌等地質災害治理工程。
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