https://scholars.lib.ntu.edu.tw/handle/123456789/614750
標題: | Sequential back analysis of spatial distribution of geomechanical properties around an unlined rock cavern | 作者: | Gao X. Yan E.-C. Yeh T.-C.J. YU-LI WANG Cai J.-S. Hao Y.-H. |
關鍵字: | Caves; Elastic moduli; Excavation; Interpolation; Rocks; Shear strain; Spatial distribution; Displacement back analysis; Geomechanical properties; Heterogeneity; Kriging approach; Linear estimators; Rock cavern; Strain distributions; Unbiased estimates; Uncertainty analysis; back analysis; cavern; displacement; excavation; geomechanics; heterogeneity; mechanical property; spatial distribution; Young modulus | 公開日期: | 2018 | 出版社: | Elsevier Ltd | 卷: | 99 | 起(迄)頁: | 177-190 | 來源出版物: | Computers and Geotechnics | 摘要: | This paper develops a sequential displacement data collection and back analysis approach for mapping spatially distributed Young's modulus (E) in a rock mass during the excavation of an unlined rock cavern (URC). Results show that this approach provides an unbiased estimate of the E field and its uncertainty. It also reveals a more detailed E distribution than kriging approach, which is based on samples of E values from boreholes before excavations. Further, predicted shear strain distribution and displacement of cavern periphery based on the estimates from this approach are more accurate than those based on the kriging estimate. © 2018 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044500171&doi=10.1016%2fj.compgeo.2018.03.007&partnerID=40&md5=52a44a5148650ba1742c4f6141fafd29 https://scholars.lib.ntu.edu.tw/handle/123456789/614750 |
ISSN: | 0266352X | 其他識別: | CGEOE | DOI: | 10.1016/j.compgeo.2018.03.007 |
顯示於: | 生物環境系統工程學系 |
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