不同结构类型的巷道支架短柱力学性能研究  

Study on mechanical properties of different structural types of roadway support columns

作　　者：张毅[1,2] 刘东[1] 张建国 薛磊[1] 杨俊[1] 刘波[1] ZHANG Yi;LIU Dong;ZHANG Jianguo;XUE Lei;Jlanguo;YANG Jun;LIU Bo(School of Mechanics and Architecture Engineering,China University of Mining and Technology（Beijing）,Beijing 100083,China;State Key La boratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology（Beijing）,Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室,北京100083

出　　处：《河南理工大学学报（自然科学版）》2019年第1期7-12,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(51274204);中央高校基本科研业务费专项项目(2010QL04)

摘　　要：针对用U型钢支架进行煤矿巷道支护时成本较高、支护结构稳定性较差等问题,以U29型钢短柱、格栅短柱、格栅混凝土短柱为研究对象,采用ANSYS数值模拟和室内轴压加载试验方法,对其力学性能进行分析。结果表明,格栅混凝土短柱的最大承载力是格栅短柱的3倍左右,是U29型钢短柱的1. 5倍左右。采用格栅混凝土结构可以使支架受力均匀,有效提高支护承载能力,并可控制围岩塑性破坏区范围,且其支护耐久性较好。Because of the high supporting cost and poor stability of supporting structure of U-shaped steel sup- ports, the supports of U29 steel short column, grid short column, and grid concrete short column were studied. Using finite element simulation with software ANSYS and indoor axial compression tests,the mechanical prop- erties of U29 steel short column were analyzed,grid short column, and grid concrete short column. The results showed that the maximum bearing capacity of the grid-shaped concrete short columns was about three times that of the grid short columns, and was about 1.5 times that of the U-shaped steel short columns. Theretore, the grid concrete structural support could make uniform force on the support,which effectively improved the sup- porting capacity and controlled the scope of roadway plastic damage zone, and increased the supporting durabil- ity.

关 键 词：格栅混凝土短柱 U型钢短柱 格栅短柱 巷道支护 力学性能 

分 类 号：TD353[矿业工程—矿井建设]