Results 41 to 50 of about 11,904 (295)

Study on Supporting Protection of Tunnel Opening near a Rock Layer under Elastic Deformation of Surrounding Rock

, 2021
Due to the limitation of geological conditions and route alignment, tunnel engineering will inevitably pass through special sections such as shallow buried section, broken rock layer, and loss and weak rock stratum.
Zhigang Jia, Yongsong Li
core   +1 more source

Mechanism and Classification of Tectonic-induced Large Deformation of Soft Rock Tunnels

工程科学与技术, 2021
Based on the analysis of large deformation cases of tunnel surrounding rock both at home and abroad, the present study found that the factors such as in-situ stress, geological structure and formation lithology are the basic conditions for the occurrence
Guangze ZHANG, Jianhui DENG, Dong WANG, Ru ZHANG, Zhengxuan XU, Zhilong ZHANG, Jun FENG, Li REN, Zheqiang JIA   +8 more
doaj  

DEFORMATIONAL BEHAVIOR OF SURROUNDING SOFT ROCK MASS IN TUNNELLING

Doboku Gakkai Ronbunshu, 1993
軟岩トンネルを掘削した場合の周辺岩盤の変形挙動を知るための理論解析について考察した. 岩盤の変形特性は軟化と残留を考慮したモデルとし, 強度特性はモール・クーロンの破壊基準に従うものとした. 岩盤物性値が変形挙動に及ぼす影響を調べた結果, 岩盤の強度特性が同じでも, それを構成する粘着力と内部摩擦角の組合せによって大きな違いがあることが明らかになった. また, 実際のトンネルの計測データと理論解を比較したところ, 岩盤の変形挙動を概ね説明しうることが分かった.
Takashi KITAGAWA, Daisuke INAGAKI
openaire   +2 more sources

Deformation mechanism and optimum supporting structures in fault-bearing biased tunnels

Zhongguo dizhi zaihai yu fangzhi xuebao
To explore the deformation mechanisms of tunnel surrounding rock under complex geological conditions and develop appropriate technologies for controlling surrounding rock deformation, this study analyzes the deformation of surrounding rock at the mouth ...
Xiaolong LIU, Chuang SUN, Hui WANG, Weiming ZHANG, Xingxuan ZHENG, Yiting WANG   +5 more
doaj   +1 more source

Analysis of Deformation Law of Tunnel Surrounding Rock based on Visualization of Rock Mass Structure

IOP Conference Series: Earth and Environmental Science, 2018
In order to accurately obtain the characteristic parameters of the rock mass structural plane of the tunnel and provide effective basis for numerical calculation, based on tunnel of Guiguang railway, this paper measured the structural characteristics of typical tunnel side wall and excavating face by using Sirovision non-contact measurement technology ...
Zhang, H., Sun, J. C., Liu, X. C., Gao, M. Z., Chen, S. G.   +4 more
openaire   +3 more sources

Deformation characteristics and failure mechanism of surrounding rock of high-stress large-diameter cylindrical caverns

Yantu gongcheng xuebao, 2023
Aiming at the deformation and damage phenomena such as rock burst, spray layer cracking and steel strand ejection in high-stress large-diameter cylindrical caverns, the development and evolution process of deformation and damage of the surrounding rock ...
PEI Shufeng 1, 2, JIANG Quan 3, FAN Yilin 2, LI Xiaoxuan 1, DUAN Hang 4
doaj   +1 more source

Mechanism of Time-Dependent Instability of Deep Soft-Rock Roadway and Crack-Filling Reinforcement Technology

Applied Sciences, 2023
Soft broken surrounding rock exhibits obvious rheological properties and time-dependent weakening effects under the action of deep high-ground stress, leading to the increasingly prominent problem of sustained large deformation in deep roadways.
Bowen Wu, Jucai Chang, Chuanming Li, Tuo Wang, Wenbao Shi, Xiangyu Wang   +5 more
doaj   +1 more source

Research on Supporting Measure at Intersection of Inclined Shaft and Major Tunnel in Highway

Advances in Civil Engineering, 2020
The deformation characteristics of the rock mass in the intersection between the Muzhailing highway tunnel and the inclined shaft is a complicated three-dimensional problem.
Xiaoming Sun, Bo Zhang, Zhigang Tao, Chengwei Zhao, Jian Wang   +4 more
doaj   +1 more source

Investigation into the Time-Dependent Characteristics of Stress and Deformation of Weak Surrounding Rock and Lining Structure in Operational Tunnels: Model Test

Applied Sciences
During the long-term operation of tunnels, surrounding rock undergoes creep effects under environmental loads, resulting in changes in the aging evolution model of stress and deformation in surrounding rock and lining, which affects the long-term ...
Pai Wang, Xujin Ma, Lei Yang, Xiangchao Sheng, Xiaolong Wang, Chunjin Lin   +5 more
doaj   +1 more source

Numerical simulation of roadway deformation and failure under different degrees of dynamic disturbance

Scientific Reports, 2022
Deformation and failure of the roadway surrounding rock under dynamic disturbance were explored, which is essential for the control of the surrounding rock.
Ce Jia, Sheng Li, Chaojun Fan, Hai Rong, Lei Yang, Ziang Pu   +5 more
doaj   +1 more source