shallow cover

• 浅埋

shallow cover的用法和样例：

例句

1. It is easily collapsed for shallow and unsymmetrical large-span tunnel near portal in soft rock.
   软岩地区浅埋偏压大跨度隧道进口段极易塌方。
2. The ground settlement of a shallow metro tunnel by excavation has important effect on the construction safety.
   浅埋暗挖地铁隧道施工期地表沉降量对施工安全具有重要意义。