摘要
里彦煤矿15上、16上、17煤回采巷道直接顶板普遍为灰岩,而且灰岩的厚度不一,为了最大限度地发挥灰岩的高承载能力,降低巷道的支护成本,提高矿井的生产效益,对17304沿空顺槽不同灰岩厚度的围岩进行了矿压观测,得出了17304沿空顺槽的围岩变形规律及特点,为不同灰岩条件下沿空巷道的合理支护设计提供了依据。
The immediate roofs of gateways in Seams No.15 U,16 U and 17 are generally limestone with different thicknesses.In order to maximize the load capacity of limestone,reduce the support costs of roadways and improve the production efficiency of the mine,the ground pressure observation of surrounding rocks under different thicknesses of limestone of Gateway 17304 driving along next goaf was carried out,and then,rules and characteristics of the deformation in surrounding rocks around Gateway 17304 driving along next goaf were obtained.The results provide the reliable basis for reasonable support design of roadways driving along next goaf under different limestone conditions.
出处
《山东科技大学学报（自然科学版）》
CAS
2010年第4期72-76,共5页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
沿空掘巷
灰岩顶板
顶板厚度
巷道围岩
变形规律
gateway driving along next goaf
limestone roof
thickness of roof
surrounding rock of roadway
deformation rule
