{"title":"Shaking table tests on the stability of dip and anti-dip rock slopes with structural planes induced by seismic motions","authors":"","doi":"10.1016/j.enggeo.2024.107707","DOIUrl":null,"url":null,"abstract":"<div><p>Benched rock slopes are prevalent in extensive engineering endeavors such as mining and road construction. This research investigates the dynamic response patterns and failure mechanisms of dip and anti-dip rock slopes through shaking table tests. The adopted approach involves utilizing the acceleration amplification factor (AAF) to compare the amplification effects on both slope types under varying excitation amplitudes. Fourier spectrum analysis of acceleration is conducted to explore the relationship between seismic wave frequency and slope response. The Hilbert-Huang Transform (HHT) method is employed to analyze the differences in seismic response between dip and anti-dip slopes. The results reveal that anti-dip slope exhibits superior stability compared to dip slope, as the latter experiences earlier failure. The study also identifies the critical excitation intensity value (“threshold point”), indicating the evolution of benched slope dynamic response. The findings demonstrate that dip slopes are more significantly affected by seismic motion, exhibiting higher energy concentration and release. The seismic wave propagation in dip slope also shows a greater energy release compared to anti-dip slope. These outcomes should provide valuable insights for the design and seismic disaster risk assessment of benched slope engineering in regions with high seismic activity. The findings highlight the increased risk of slope failure in dip slopes and emphasize the importance of considering slope stability in engineering projects. The approach proposed in this study, along with the identified critical excitation intensity value, can aid in understanding and mitigating the potential risks associated with benched slope engineering.</p></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":null,"pages":null},"PeriodicalIF":6.9000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Geology","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0013795224003077","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Benched rock slopes are prevalent in extensive engineering endeavors such as mining and road construction. This research investigates the dynamic response patterns and failure mechanisms of dip and anti-dip rock slopes through shaking table tests. The adopted approach involves utilizing the acceleration amplification factor (AAF) to compare the amplification effects on both slope types under varying excitation amplitudes. Fourier spectrum analysis of acceleration is conducted to explore the relationship between seismic wave frequency and slope response. The Hilbert-Huang Transform (HHT) method is employed to analyze the differences in seismic response between dip and anti-dip slopes. The results reveal that anti-dip slope exhibits superior stability compared to dip slope, as the latter experiences earlier failure. The study also identifies the critical excitation intensity value (“threshold point”), indicating the evolution of benched slope dynamic response. The findings demonstrate that dip slopes are more significantly affected by seismic motion, exhibiting higher energy concentration and release. The seismic wave propagation in dip slope also shows a greater energy release compared to anti-dip slope. These outcomes should provide valuable insights for the design and seismic disaster risk assessment of benched slope engineering in regions with high seismic activity. The findings highlight the increased risk of slope failure in dip slopes and emphasize the importance of considering slope stability in engineering projects. The approach proposed in this study, along with the identified critical excitation intensity value, can aid in understanding and mitigating the potential risks associated with benched slope engineering.
期刊介绍:
Engineering Geology, an international interdisciplinary journal, serves as a bridge between earth sciences and engineering, focusing on geological and geotechnical engineering. It welcomes studies with relevance to engineering, environmental concerns, and safety, catering to engineering geologists with backgrounds in geology or civil/mining engineering. Topics include applied geomorphology, structural geology, geophysics, geochemistry, environmental geology, hydrogeology, land use planning, natural hazards, remote sensing, soil and rock mechanics, and applied geotechnical engineering. The journal provides a platform for research at the intersection of geology and engineering disciplines.