文献类型：期刊文献

英文题名：Quantitative analysis of the influence of bedding planes on the deformation of layered carbonaceous slate around tunnel

作者：Tian, Hongming[1];Chen, Weizhong[1];Tan, Xianjun[1];Tian, Yun[2];Xu, Zhengxuan[3]

机构：[1]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China;[2]Shaoxing Univ, Sch Civil Engn, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Zhejiang, Peoples R China;[3]China Railway Eryuan Engn Grp Co Ltd, Chengdu 610031, Sichuan, Peoples R China

年份：2023

卷号：82

期号：1

外文期刊名：BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT

收录：SCI-EXPANDED(收录号：WOS:000899634000003)、、EI(收录号：20225113277053)、Scopus(收录号：2-s2.0-85144138039)、WOS

基金：AcknowledgementsThe authors gratefully acknowledge the support of the support of the National Natural Science Foundation of China (Grant Nos. 52179113, 51991392, and 51922104).

语种：英文

外文关键词：Layered carbonaceous slate; Bedding planes; Large deformation; Tunnel

外文摘要：Because of the effect of bedding planes, inaccuracy deformation prediction for thin-layered rock often results in severe damage to the tunnel support in high in situ stress zone. For deformation prediction of layered rock, a series of numerical simulations using a continuum-interface numerical model were conducted to investigate the influences of the bedding planes on tunnel deformation. The feasibility of the numerical model is first verified by the comparisons of deformation and failure behaviors of layered rock between numerical results and field observations. Then, according to the numerical results, a deformation prediction equation considering effect of bedding planes was proposed for layered carbonaceous slates. The application of proposed deformation prediction equation showed that when the bedded thickness exceeds 0.05 m, the relative errors between the prediction deformation and observed deformation are less than 10%, which can satisfy the requirement of engineering applications. While, when the bedded thickness is less than 0.05 m, the proposed prediction equation cannot be used directly due to underestimation of the deformation of layered rock.