城郊煤矿东翼轨道上山遇F48断层后 ,发生了大型冒顶事故 ,在采用常规处理方法无效的情况下 ,采用注浆造顶新技术进行处理 ,不仅顺利地通过了冒顶区 ,而且确保了工程质量 ,为矿井建设特别是上山施工处理大型冒顶事故积累了成功经验 . After the F48 fault occurred in the uphill track of the east wing of Chengjiao Coal Mine, a large-scale roof accident occurred. Under the circumstance that the conventional treatment method was ineffective, the new technology of grouting made the new technology not only successfully passed the roof-fall area but also ensured the project quality , Which has accumulated successful experience in mine construction, especially in the construction of large-scale roof-top accidents.