port arch 中文意思是什麼
port arch
解釋
噴出口拱頂-
Huangmeishan tunnel is the controlling project of maanshan - wuhu expressway, and also the 1st large span twin - arch tunnel constructed under the condition of shallow burying soft surrounding rocks in anhui province. the depth buried at the port of the tunnel is shallow, and it is covered with accumulated and disposal soil
黃梅山隧道是馬蕪(馬鞍山?蕪湖)高速公路控制工程,是安徽省在淺埋軟弱圍巖條件下修建的第一條大跨度雙連拱隧道。隧道洞口段埋深淺,且為坡積物和人工棄土覆蓋,圍巖鬆散,自承能力差。
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