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Numerical study on maximum rebound ratio in blasting wave propagation along radian direction normal to joints
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  • 分类:TU459.3[建筑科学—岩土工程;建筑科学—土工工程] O382.2[理学—流体力学;理学—力学]
  • 作者机构:[1]Department of Urban and Civil Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China, [2]School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore, [3]Ecole Polytechnique Federale de Lausanne (EPFL), Rock Mechanics Laboratory, Lausanne CH-1015, Switzerland, [4]College of Architecture and Civil Engineering, China University of Mining and Technology, Xuzhou 221008, China, [5]Kvaemer E&C Singapore Pte. Ltd., Aker Kvaemer Asia Pacific, Singapore 118254, Singapore
  • 相关基金:Projects(50278057) supported by the National Natural Science Foundation of China; project(2002CB412703) supported by Major State Basic Research Development Program of China
中文摘要:

在 2-D 的过程,在有多重平行的一个岩石团中的有压缩性的波浪繁殖连接弧度方向正常到关节,相应于在在联合集合的二个邻近的关节之间的点的最大的可能的波浪振幅被重叠控制多重播送并且反映的波浪,由最大的反弹比率测量了。沿着到关节的弧度方向正常的最大的反弹比率上的参量的研究在通用不同元素代码被执行。结果证明最大的反弹比率被三个因素影响,即,关节的规范的正常僵硬,到波浪从反弹的波长和关节的联合间距的比率。在最大的反弹比率和影响因素之间的关系被概括进五份图表。Thosecharts 能作为预言模型被使用估计最大的反弹比率。

英文摘要:

In the process of 2-D compressional wave propagation in a rock mass with multiple parallel joints along the radian direction normal to the joints, the maximum possible wave amplitude corresponding to the points between the two adjacent joints in the joint set is controlled by superposition of the multiple transmitted and the reflected waves, measured by the maximum rebound ratio. Parametric studies on the maximum rebound ratio along the radian direction normal to the joints were performed in universal distinct element code. The. results show that the maximum rebound ratio is influenced by three factors, i.e., the normalized normal stiffness of joints, the ratio of joint spacing to wavelength and the joint from which the wave rebounds. The relationship between the maximum rebound ratio and the influence factors is generalized into five charts. Those charts can be used as the prediction model for estimating the maximum rebound ratio.

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