摘要
通过现场调研和钻孔窥视等方法,分析受掘进扰动和采动影响时煤柱体的变化及裂隙张开、扩容变形情况;研究围岩结构对巷道围岩变形和稳定性的影响;同时借助数值计算软件,分析围岩强度和结构与围岩变形的关系,提出成庄矿5306工作面受多次采动影响下的碎胀煤层留巷巷道支护设计方案,并成功应用现场生产实践,取得了显著的支护效果。
Through field investigation and borehole peering,the coal pillar,fracture opening,and expanding deformation are studied under the influence of driving disturbance and mining.The surrounding rock structure＇s effect on the deformation and stability is also studied.Meanwhile,with some numerical calculation softwares,the relationship between the strength and structure of surrounding rock and its deformation is analyzed.The paper presents the supporting design of retained roadway in broken-expansion coal seams in 5306 working face,Chengzhuang mine,which is successfully used in the production and achieves great supporting effects.
出处
《山西煤炭》
2011年第6期27-30,共4页
Shanxi Coal
关键词
碎胀煤层
采动影响
钻孔窥视
数值模拟
broken-expansion coal seam
mining effect
borehole peering instrument
numerical simulation
