Study on Deformation and Subsidence Measurement of Prefractured Sandstone under Dynamic Loading

DOI

10.2991/978-94-6463-429-7_11How to use a DOI?

Keywords

rock deformation; Settlement measurement; SHPB; prefabricated fractures; dynamic stress

Abstract

The measurement of deformation and settlement of the ground surface under the action of dynamic loads is one of the urgent problems faced by geotechnical engineering. The rock mass is a non-homogeneous material and there are often a large number of non-penetrating fractures within the matrix. The rock mass deformation characteristics are directly influenced by these cracks, thereby accelerating the subsidence of the rock mass surface. The surface of the fractured rock mass is often subjected to dynamic impacts such as earthquakes, resulting in subsidence and deformation. The present study utilizes Hopkinson pressure bars and focuses on sandstone as the primary research subject. Prefabricated cracks are set at 0°, 30°, 60°, and 90° angles to measure and investigate the deformation and settlement behavior of specimens under dynamic impacts. The measurement results indicate that the increase of the prefabricated fracture angle gradually deteriorated the overall dynamic compressive performance of the sandstone, and the maximum stress of the sandstone specimen containing prefabricated fracture occurred at the prefabricated fracture angle of 0°, with the maximum average dynamic peak stress of 62.39 MPa. This study extends the researchers understanding of the deformation and sedimentation characteristics of precast crushed sandstone under dynamic influence.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xin Wang
AU  - Shiliang Wu
PY  - 2024
DA  - 2024/06/07
TI  - Study on Deformation and Subsidence Measurement of Prefractured Sandstone under Dynamic Loading
BT  - Proceedings of the 2024 7th International Conference on Structural Engineering and Industrial Architecture (ICSEIA 2024)
PB  - Atlantis Press
SP  - 84
EP  - 92
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-429-7_11
DO  - 10.2991/978-94-6463-429-7_11
ID  - Wang2024
ER  -