Wang, M., Shang, J.L. and Fan, L.F. (2022) Combined static-dynamic loading effect on the wave transmission properties in rock masses with macrojoint and microdefect. Rock Mechanics and Rock Engineering, 55(12), pp. 7747-7764. (doi: 10.1007/s00603-022-03057-6)
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Abstract
The wave transmission properties in double-scale discontinuous rock masses subjected to both static prestress and dynamic loads are investigated. The double-scale discontinuous rock masses refer to rock masses that contain macrojoint and microdefect. The split three characteristic lines method is extended to predict wave propagation under combined static–dynamic loads by introducing the mechanical properties of macrojoints and microdefects under static prestress. The amplitude and energy transmission coefficients of wave propagation through rock masses under different static prestresses are investigated. A comparison between the results of the present study and those of a traditional study that does not consider microdefects is performed to evaluate the effect of microdefects on wave propagation. The results show that the proposed method can effectively analyze wave propagation through double-scale discontinuous rock masses under static prestress. The amplitude and energy transmission coefficients increase with an increase in static prestress. Under an arbitrary static prestress, the results obtained from the present study are always smaller than those obtained from the traditional study, because the effects of microdefects are considered in the present study. However, when the static prestress is small, the effect of microdefects on wave propagation is slight. When the static prestress is large, the effect of microdefects on wave propagation is relatively significant, and microdefects in the rock mass cannot be disregarded.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work is supported by the National Natural Science Foundation of China (NO. 12172019), Beijing Natural Science Foundation (JQ20039) and China Scholarship Council (NO. 202106540017). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Shang, Dr Junlong |
| Authors: | Wang, M., Shang, J.L., and Fan, L.F. |
| College/School: | College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| Journal Name: | Rock Mechanics and Rock Engineering |
| Publisher: | Springer |
| ISSN: | 0723-2632 |
| ISSN (Online): | 1434-453X |
| Published Online: | 14 September 2022 |
| Copyright Holders: | Copyright © 2022 The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature |
| First Published: | First published in Rock Mechanics and Rock Engineering 2022 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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