...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Geophysics >Seismic response of adjacent filled parallel rock fractures with dissimilar properties
【24h】

Seismic response of adjacent filled parallel rock fractures with dissimilar properties

机译：不同性质的相邻填充平行岩缝的地震响应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this study is to analytically predict and to experimentally investigate the seismic response of adjacent filled parallel rock fractures with dissimilar properties (e.g., fracture thickness and stiffness). The time-domain recursive method is extended to predict that a P-wave propagates normally across the filled parallel fractures using the specific stiffness of each filled fracture and considering multiple wave reflections between the parallel fractures. The split Hopkinson rock bar technique is modified to simulate P-wave propagation normally across the sand-filled parallel fractures and to characterize the stress-closure relation of each sand-filled fracture. The P-wave transmission and the seismic response of the filled parallel fractures are an interactive process. The experimental results show the decreases of loading rate and dominant frequency when the P-wave propagates across each sand-filled fracture. The P-wave transmitted from the first sand-filled fracture strongly affects the seismic response of the second one. The P-wave attenuation in the filled parallel fractures is mainly due to the dynamic compaction of the filling sands. By comparison, the analytical method provides a satisfactory prediction to the experimental result. This study suggests considering the specific stiffness of each filled fracture to precisely predict the seismic response of filled parallel rock fractures.
机译：本研究的目的是分析预测和实验研究具有不同特性（例如，裂缝厚度和刚度）的相邻填充平行岩石裂缝的地震响应。扩展了时域递归方法，以使用每个填充裂缝的比刚度并考虑平行裂缝之间的多次波反射来预测P波在整个填充平行裂缝中正常传播。修改了分裂式Hopkinson岩石棒技术，以模拟正常情况下横穿填砂平行裂缝的P波传播，并表征每个填砂裂缝的应力闭合关系。纵波传播与填充的平行裂缝的地震响应是一个相互作用的过程。实验结果表明，当纵波在每个充满砂砾的裂缝中传播时，加载速率和主频降低。从第一个充满沙子的裂缝传输的P波强烈影响第二个裂缝的地震响应。填充的平行裂缝中的P波衰减主要是由于填充砂的动态压实。相比之下，该分析方法为实验结果提供了令人满意的预测。这项研究建议考虑每个填充裂缝的比刚度，以准确预测填充平行岩石裂缝的地震响应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号