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.
经过高压封闭注浆治理，垮塌、涌水、冒顶地层得到完全改观，注浆区域内不再垮塌、涌水，使工程顺利通过该垮塌涌水区，进入下一步施工程序。 - 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.
本文以平邑石膏矿两次大的冒顶事故为资料背景，分析了矿柱、顶板系统的破坏机理。 返回 roof-fall accident