surface land collapse

• 地表塌陷

surface land collapse的用法和样例：

例句

1. With the technics of purdah infusion to stem water, surface sinking of large area can be prevented.
   采用帷幕注浆堵水工艺可防止大面积地表塌陷的发生。
2. The ground collapse and cracks caused by underground mining severely threaten the safe in production and destroy the surface environment.
   地下采矿引起的地表塌陷和裂缝，严重威胁矿山生产安全，破坏地表生态环境。