roof-fall accident

常見例句

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(jīng)過高壓封閉注漿治理，垮塌、涌水、冒頂?shù)貙拥玫酵耆挠^，注漿區(qū)域內(nèi)不再垮塌、涌水，使工程順利通過該垮塌涌水區(qū)，進(jìn)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.
本文以平邑石膏礦兩次大的冒頂事故為資料背景，分析了礦柱、頂板系統(tǒng)的破壞機(jī)理。