forced block caving

例句：

1. 1.The mine was forced to block the cavern due to a sudden drop in water levels.
   由于水位突然下降，矿井被迫关闭了洞穴。
2. 2. The construction crew had to force a block caving to access the underground tunnels.
   施工队不得不强行挖掘以进入地下隧道。
3. 3.The earthquake caused massive block caving and landslides in the region.
   地震导致该地区发生了大规模的块状塌陷和滑坡。