Pub Date : 2023-10-18DOI: 10.1007/s10706-023-02676-2
Hassan Sarfaraz, Mohadeseh Sarlak
{"title":"Discussion on “Design Charts for Jointed Rock Slopes Susceptible to Slide-Head Toppling Failure” by Samson et al. (2023)","authors":"Hassan Sarfaraz, Mohadeseh Sarlak","doi":"10.1007/s10706-023-02676-2","DOIUrl":"https://doi.org/10.1007/s10706-023-02676-2","url":null,"abstract":"","PeriodicalId":48246,"journal":{"name":"Geotechnical and Geological Engineering","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135884265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-16DOI: 10.1007/s10706-023-02624-0
Prince Turkson, Daniel R. VandenBerge
{"title":"Rapid Drawdown Analysis Using Pore Pressures from BBM","authors":"Prince Turkson, Daniel R. VandenBerge","doi":"10.1007/s10706-023-02624-0","DOIUrl":"https://doi.org/10.1007/s10706-023-02624-0","url":null,"abstract":"","PeriodicalId":48246,"journal":{"name":"Geotechnical and Geological Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136113906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Field Study on Rectangular Inclined Deep Foundation Excavation in Soft Soils","authors":"Pingping Rao, Junjie Meng, Jifei Cui, Sanjay Nimbalkar","doi":"10.1007/s10706-023-02666-4","DOIUrl":"https://doi.org/10.1007/s10706-023-02666-4","url":null,"abstract":"","PeriodicalId":48246,"journal":{"name":"Geotechnical and Geological Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136112485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract In this study, the shear mechanical property of rock joints under constant normal stiffness (CNS) boundary conditions was investigated by the PFC discrete element software. The effects of joint roughness coefficient (JRC), initial normal stress ( σ n0 ), normal stiffness ( k n ) and shear rate ( v ) on shear stress ( τ ), shear dilation (normal displacement, δ v ), and normal stress ( σ n ) were quantitatively investigated. The stress evolution and damage process inside the samples during the CNS shearing process of rock joints were analyzed. The test results showed that the increase of JRC significantly improved the shear performance of rock joints. Meanwhile, shear stress, normal displacement, normal stress and the number of tensile cracks of samples were significantly increased. Excessive initial normal stress (greater than or equal to 4 MPa) will cause irreversible failure of the joints. The protrusion of the joints is sheared or ground and detached from the samples, which leads to shear shrinkage of the sample. The increase of normal stiffness and shear rate will restrain the shear expansion of the joints, which will also aggravate the failure of the samples. Three empirical formulas for predicting shear stress, normal stress, normal displacement of rock joint samples under CNS boundary conditions are proposed and laboratory tests were carried out to verify them. The four factors involved above and shear displacement ( δ h ) are considered in the prediction model. The calculated results of the prediction model are in good overall agreement with the laboratory test results, and the error decreases with the increase of shear displacement.
{"title":"Numerical Simulation Study on Shear Properties of Rock Joint Under CNS Boundary Conditions","authors":"Guansheng Han, Zhijing Chen, Jiahao Xiang, Yuan Gao, Yu Zhou, Qiongqiong Tang, Weiqiang Chen","doi":"10.1007/s10706-023-02622-2","DOIUrl":"https://doi.org/10.1007/s10706-023-02622-2","url":null,"abstract":"Abstract In this study, the shear mechanical property of rock joints under constant normal stiffness (CNS) boundary conditions was investigated by the PFC discrete element software. The effects of joint roughness coefficient (JRC), initial normal stress ( σ n0 ), normal stiffness ( k n ) and shear rate ( v ) on shear stress ( τ ), shear dilation (normal displacement, δ v ), and normal stress ( σ n ) were quantitatively investigated. The stress evolution and damage process inside the samples during the CNS shearing process of rock joints were analyzed. The test results showed that the increase of JRC significantly improved the shear performance of rock joints. Meanwhile, shear stress, normal displacement, normal stress and the number of tensile cracks of samples were significantly increased. Excessive initial normal stress (greater than or equal to 4 MPa) will cause irreversible failure of the joints. The protrusion of the joints is sheared or ground and detached from the samples, which leads to shear shrinkage of the sample. The increase of normal stiffness and shear rate will restrain the shear expansion of the joints, which will also aggravate the failure of the samples. Three empirical formulas for predicting shear stress, normal stress, normal displacement of rock joint samples under CNS boundary conditions are proposed and laboratory tests were carried out to verify them. The four factors involved above and shear displacement ( δ h ) are considered in the prediction model. The calculated results of the prediction model are in good overall agreement with the laboratory test results, and the error decreases with the increase of shear displacement.","PeriodicalId":48246,"journal":{"name":"Geotechnical and Geological Engineering","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136113681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-14DOI: 10.1007/s10706-023-02665-5
Zaid A. Al-Sadoon, Emran Alotaibi, Maher Omar, Mohamed G. Arab, Ali Tahmaz
{"title":"AI-Driven Prediction of Tunneling Squeezing: Comparing Rock Classification Systems","authors":"Zaid A. Al-Sadoon, Emran Alotaibi, Maher Omar, Mohamed G. Arab, Ali Tahmaz","doi":"10.1007/s10706-023-02665-5","DOIUrl":"https://doi.org/10.1007/s10706-023-02665-5","url":null,"abstract":"","PeriodicalId":48246,"journal":{"name":"Geotechnical and Geological Engineering","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135803420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-14DOI: 10.1007/s10706-023-02670-8
Junyan Yang, Meixia Wang, Zongqing Zhou, Weimin Yang, Songsong Bai, Daosheng Zhang, Yang Geng, Pinglin Jiang, Xinwei Ji, Pengfei Lv
{"title":"Hydraulic Fracture Feature of Rock Under Unloading Based on Test and Numerical Simulation","authors":"Junyan Yang, Meixia Wang, Zongqing Zhou, Weimin Yang, Songsong Bai, Daosheng Zhang, Yang Geng, Pinglin Jiang, Xinwei Ji, Pengfei Lv","doi":"10.1007/s10706-023-02670-8","DOIUrl":"https://doi.org/10.1007/s10706-023-02670-8","url":null,"abstract":"","PeriodicalId":48246,"journal":{"name":"Geotechnical and Geological Engineering","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135804168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-13DOI: 10.1007/s10706-023-02671-7
Ali Lashgari, Yaser Jafarian
{"title":"A CAV Attenuation Model for Iran: Application to Liquefaction-Induced Lateral Spreading Assessment","authors":"Ali Lashgari, Yaser Jafarian","doi":"10.1007/s10706-023-02671-7","DOIUrl":"https://doi.org/10.1007/s10706-023-02671-7","url":null,"abstract":"","PeriodicalId":48246,"journal":{"name":"Geotechnical and Geological Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135853554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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