roof-fall accident
常见例句
- After grouting treatment, collapse water gushing and roof-fall accident can be thoroughly controlled and the project can go on smoothly to next procedure.
經過高壓封閉注漿治理，垮塌、湧水、冒頂地層得到完全改觀，注漿區域內不再垮塌、湧水，使工程順利通過該垮塌湧水區，進入下一步施工程序。 - With the two great roof-fall accident of Pingyi gypsum mine, this paper analyzes the stability of pillars and roof system and the mechanism of destruction of pillars and roof.
本文以平邑石膏鑛兩次大的冒頂事故爲資料背景，分析了鑛柱、頂板系統的破壞機理。 返回 roof-fall accident