摘要
以阳煤集团新元公司沿空留巷为工程背景,详细介绍了复杂条件工作面沿空留巷影响因素、充填液压支架支护系统组成、空间布置及井下试验,通过液压支架压力监测,评价支护效果。试验表明:由锚杆、锚索配合单体支柱、铰接顶梁组成的巷内支护,充填液压支架组成的采空区及待充填区支护,高水充填墙体组成的巷旁支护,能有效控制沿空留巷围岩变形,保持留巷稳定。基于井下试验情况,提出了复杂条件沿空留巷充填液压支架的设计原则,并对存在的问题,提出了改进意见。
It taking gob side entry retaining of Xinyuan company of Yangmei group as engineering background,and then the influence factors,system composition of backfill hydraulic support,spatial distribution and underground testing,according pressure monitoring of hydraulic support,the supporting effect was evaluated.The results showed that inner roadway supporting with bolt,cable and single prop and hinged roo beam,gob and waiting backfill supporting component by backfill hydraulic support,roadway side supporting was high water packing wall,and then surrounding rock deformation of gob side entry could be effectively controlled,the roadway could maintained stability.Based on underground testing,designing principle was put forward,some improved options for remaining questions were put forward.
作者
辛家祥
XIN Jia-xiang(Coal Mining & Designing Department,Tiandi Science & Technology Co.,Ltd.,Beijing 100013,China)
出处
《煤矿开采》
北大核心
2019年第1期48-52,共5页
Coal Mining Technology
基金
国家重点研发计划项目(2017YFC0804308)
天地科技股份有限公司技术创新基金(KJ-2015-TDKC-01)
中国煤炭科工集团有限公司科技创新基金(2017MS005)
关键词
沿空留巷
液压支架
松软破碎
高瓦斯
设计
gob side entry retaining
hydraulic support
soft and broken
high methane
designing
