二维波穿过单节理的透射率特性及其隐含意义  

Characteristics of Transmittivity for A Single Joint in 2D Wave Propagation and Implications

作　　者：雷卫东[1] ASHRAF M H 滕军[1] 赵坚[3] 宋宏伟[4] 

机构地区：[1]哈尔滨工业大学深圳研究生院城市与土木工程学科部,广东深圳518055 [2]新加坡南洋理工大学土木及环境工程系,新加坡639798 [3]瑞士联邦理工大学岩石力学研究所 [4]中国矿业大学建筑工程学院,江苏徐州221008

出　　处：《中国矿业大学学报》2006年第4期492-497,共6页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(50278057);国家重点基础研究发展规划(973计划)项目(2002CB412703)

摘　　要：二维波穿过单节理的问题是一个复杂的多因素影响问题,其透射率影响因素有:节理无量纲刚度、射线角、巷道半径、所在点离巷道中心的径向距离以及岩石力学性能参数.对二维波穿过单节理的透射率进行了详细的算例分析.归纳了二维波穿过单节理后透射率特性,在此基础上提出了相关问题的研究策略.分析结果表明:单节理后各节点透射率的研究,可以通过单节理后某一以巷道或钻孔中心为中心的圆弧上各节点的透射率来展开;射线角为90°的射线上节理后各节点透射率的研究,可以通过节理后某一节点的透射率来展开;单节理的透射率的研究可以在一个固定半径值的巷道或钻孔的模型上用一种典型的岩石进行.Two-dimensional（2D） compressional wave propagation from a tunnel or borehole in a rock mass with single joint is a multiple factor-influenced problem. The possible factors influencing on the transmittivity including the normalized stiffness of the joint, the radian angle, the radius of the cavity, the radial distance from the cavity center and the mechanical properties of the rock. Extensive parametric studies on the transmittivity were performed, the characteristics of it were induced, and the research strategies were proposed for the corresponding problems. The results show that the study on transimittivity can be done using the points along the circle arc centered at the roadway or the boring core, the transimittivity at the joints along the right angle ray can be studied using one single point behind the joint, and the studies on transimittivity can be done on any reasonable radius value of the roadway or boring core in a typical rock.

关 键 词：二维波 透射率 单节理岩体 节理刚度 

分 类 号：TD45[矿业工程—矿山机电]