摘要
架后空隙使支架变形增加,破碎带扩大和围岩移近量增大,因而加剧了巷道的不稳定性。架后充填可以提高围岩自承能力,并改善支架的受力状态。降低充填体的模量,则使巷道应力降低。
The gap behind Supports will render the deformation of supports to increase, the crush zone to exfend and the displacement of surrounding rock to enlarge, and then aggravates the unstability of roadway. The filling between supports and walls may enhance the self-bearing ability of surroanding rock and improve the stress state of supports. The decrease of the elastic modulus of filling-material can weaken the stress of surrounding rock.
出处
《西安矿业学院学报》
北大核心
1991年第3期9-16,共8页
Journal of Xi'an University of Science & Technology
关键词
巷道
稳定性
架后充填
filling behindsupports
filling-material
self-bearing ability
gap between supports and walls
