摘要
为了推动钢管混凝土支架在深部高应力巷道中的应用,以贵州某矿270中段为背景,对比了常规U36型钢支架与钢管混凝土支架承载力;采用ANSYS有限元法,建立深部巷道支护力学三维模型,分析了两类支架在高水平应力下的变形情况。研究结果表明,钢管混凝土支架的承载力远大于U型钢支架;当侧应力系数大于1时,钢管混凝土支架底角的变形量小于U型钢支架,钢管混凝土支架更适用于水平应力较大的深部巷道。研究结果可为深部巷道难支护提供参考依据。
In order to promote the application of concrete-filled steel tube(CFST)supports into high⁃stress roadways in deep mining area,the conventional U36 section⁃steel support was compared with CFST support in terms of their bearing capacity for the middle section 270 of a mine in Guizhou Province.A three⁃dimensional mechanical model was established for the supports in the deep roadway by using ANSYS finite element analysis,and the deformation of two types of supports under high stress was analyzed.The results show that the bearing capacity of the CFST support is much greater than that of the U⁃shaped steel support.When the coefficient of lateral stress is greater than 1,the deformation at the bottom corner of the CFST support is smaller than that of the U-shaped steel support.Thus,the CFST support is found to be more suitable for the roadways with higher horizontal stress in deep mining area.It is concluded that the research results can provide a reference for the difficult support of deep roadways.
作者
陈斌
左宇军
王剑
孙文吉斌
郑禄璟
林健云
CHEN Bin;ZUO Yu-jun;WANG Jian;SUN Wen-ji-bin;ZHENG Lu-jing;LIN Jian-yun(School of Mining,Guizhou University,Guiyang 550025,Guizhou,China;National and Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guiyang 550025,Guizhou,China;Guizhou Key Laboratory for Comprehensive Utilization of Nonmetal Mineral Resources,Guiyang 550025,Guizhou,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2021年第1期11-15,共5页
Mining and Metallurgical Engineering
基金
国家自然科学基金(51964007,51774101)
贵州省高层次创新型人才培养项目(黔科合人才(2016)4011号)
贵州省矿山动力灾害预警与控制技术科技创新人才团队项目(黔科合平台人才(2019)5619)。
关键词
深部巷道
深部开采
钢管混凝土支架
围岩控制
U型钢支架
有限元法
巷道支护
deep roadway
deep mining
concrete⁃filled steel tube(CFST)support
surrounding rock control
U⁃shaped steel support
finite element method
roadway support
