文章导读
总览 评价 马超 1,2,* , 郭晓倩 1, ( 1、 深部岩土力学与地下工程国家重点实验室,江苏,徐州,221008; 2、 中国矿业大学力学与建筑工程学院; ) 摘要: 由于锚杆支护显著的技术经济优越性,已成为矿井巷道等地下工程支护的主要形式。随着锚杆支护技
马超1,2,*, 郭晓倩1,
(
1、深部岩土力学与地下工程国家重点实验室,江苏,徐州,221008; 2、中国矿业大学力学与建筑工程学院; )
摘要:
由于锚杆支护显著的技术经济优越性,已成为矿井巷道等地下工程支护的主要形式。随着锚杆支护技术工程实践的不断丰富,锚杆支护的理论也在日趋成熟。本文建立了锚固围岩和锚杆的力学模型,利用弹性力学中位移函数法推导出半无限体内部一点受集中力作用时的弹性力学解,并分析了影响锚固围岩径向应力的因素。结果表明:1)径向压应力随着距锚固围岩表面的距离的增大先变小后增加;2)径向压应力的范围取决于锚杆的长度。
关键词:
固体力学;力学机理;弹性理论;径向应力;锚杆长度
Ma Chao1,*, Guo Xiaoqian2,
(
1、State Key Laboratory for Geomechanics and Deep Underground Engineering,China Universtity of Mining and Technology; 2、 Mechanics & Civil Engineering,China University of Mining and Technology,Xuzhou,Jiangsu,221008,China; )
Abstract:
Bolt support has been the main support form of the mine roadway in the underground endineering because of its obvious technical and economical superiority.Th theory of bloting is maturing with the practice of bolting technology continuously enriched.For this study,we built a mechanical modle for bolting,which represented the effect of a bolt on the surrounding rock in roadway. Simultaneously,we use the displacement method in elastical to deduce the elastic solution of forcing at point in the interioe of a semi-infinite solid. And we analyzed factors affecting the radical compression of the bolt on the surrounding rock. The results indicate that 1) the maximum radical compression stress declines first and then rises with the increase in depth from the surface of the anchorage surrounding rock and 2) the size of the radical compression area is mainly determined by the length of the bolt.
Tag:
点此返回栏目查看更多>>>参考论文