-
穿越富水砂层一直是浅埋暗挖隧道的难点。
It is difficult for mined tunnel with shallow cover to cross water-rich sand stratum.
youdao
-
管棚支护是浅埋暗挖法施工中的一种辅助工法。
Pipe roof support is an assisted method of shallow tunneling.
youdao
-
管棚支护是浅埋暗挖法施工中的一种辅助工法。
Pipe roof support is an assisted method of shallow tunneling.
youdao