Results 201 to 210 of about 2,442 (257)

Study on the stress and deformation characteristics of ultra-deep soft rock tunnel under complex geological conditions. [PDF]

Sci Rep
Zhan QB, Tang L, Wang YK, Zhang SH, Wen JQ, Wang YL.   +5 more
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Effect analysis of transosseous wire fixation for patella fractures: therapeutic efficacy. [PDF]

BMC Musculoskelet Disord
Zeng H, Zeng H, Dai Z, Fang K, Lin X.
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Finite-discrete element numerical modeling on shield tunnel face stability undercrossing existing pipeline considering discontinuous contact. [PDF]

Sci Rep
Liu Y, Lei H, Huang H, Li Q.
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Dynamic numerical simulation analysis of rockburst grade evaluation based on rock mass strength. [PDF]

Sci Rep
Wang Y, Xu J, Zhang Y.
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Risk classification assessment and early warning of large deformation of soft rock in tunnels based on CNN-LSTM model. [PDF]

Sci Rep
Zhang X, Minghao W, Feng D, Jingchun W.
europepmc   +1 more source

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Support pressure assessment for deep buried railway tunnels using BQ-index

Journal of Central South University, 2021
Estimation of support pressure is extremely important to the support system design and the construction safety of tunnels. At present, there are many methods for the estimation of support pressure based on different rock mass classification systems, such as Q system, GSI system and RMR system. However, various rock mass classification systems are based
Ming-nian Wang, Zhi-long Wang, Jian-jun Tong, Xiao Zhang, Yu-cang Dong, Da-gang Liu   +5 more
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Study on Construction Risk Assessment Method of Deep Buried Tunnels

Applied Mechanics and Materials, 2013
High speed railway tunnel have many uncertainty hazard factors in construction, at the stage of construction drawing design and during tunnel construction process. Taking no.1 tunnel in Xuefeng Mountain as a deep buried tunnel in the paper, tunnel construction risk source and main risk identification are analysis, main risk assessment during ...
Xing Kuang, Di Qing Yi, Cheng Liang Wang
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Transverse extent of numerical model for deep buried tunnel excavation

Tunnelling and Underground Space Technology, 2019
Abstract Numerical simulation has been widely used for predicting rock mass convergence during tunnel excavation. Considering that tunnel construction is a three-dimensional (3D) process, the 3D numerical analysis, instead of the plane-strain models, are commonly employed in engineering practice.
Kai Su, Yan-Jun Zhang, Zhi-Hui Chang, He-Gao Wu, Tao Wang, Wei Zhou   +5 more
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Collapse risk assessment of deep-buried tunnel during construction and its application

Tunnelling and Underground Space Technology, 2021
Abstract The hazard of tunnel collapse is a key factor restricting the excavation progress and safety of the tunnels excavated by drilling and blasting. To control this construction risk, a new risk assessment method of tunnel collapse involving case analysis, advanced geological prediction, and Dempster-Shafer (D-S) evidence theory is put forward ...
Guang-Zhao Ou, Yu-Yong Jiao, Guo-Hua Zhang, Jun-Peng Zou, Fei Tan, Wei-She Zhang   +5 more
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Deformation Characteristics Research on Gravel Bed for Deep Buried Immerse Tunnel

Applied Mechanics and Materials, 2013
Taking some deep buried immerse tunnel as background, deformation characteristics of foundation gravel bed is discussed by physical model test. The results show that small particle size gradation is not suitable for the foundation gravel bed, and compared with the non-groove gravel, compression modulus is greatly reduced in case of gravel with groove ...
Yong Wang, Cai Hong Sun
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