Results 1 to 10 of about 45 (36)

Experimental Simulation Investigation on Slab Buckling Rockburst in Deep Tunnel

Applied Sciences (Switzerland)
The relationship between slabbing failure and rockburst has become a hot issue in rockburst research. In this paper, the experimental system of impact rockburst is used to conduct a simulation experiment of rockburst induced by slab failure on ...
Dongqiao Liu, Chao Ren, He Manchao
exaly   +5 more sources

Evolution Mechanism of Deformation and Failure of Surrounding Rock during Excavation and Unloading of the High-Stress Rock Mass

Advances in Civil Engineering, 2020
To deeply analyze the failure evolution of surrounding rock during excavation-induced unloading of the high-stress rock mass, a multistage failure model was established based on revealed failure patterns.
Wensong Xu, Guangming Zhao, Chongyan Liu, Xiangrui Meng, Ruofei Zhang, Siming Kao, Shunjie Huang, Jun Zhou, Rui Peng   +8 more
doaj   +3 more sources

Sidewall rockburst characteristics of highly stressed circular tunnel under impact load

Journal of Rock Mechanics and Geotechnical Engineering
This study investigated the sidewall rockburst characteristics of highly stressed circular tunnel subjected to impact loads resulting from rock blasting or other mining-related dynamic disturbances, aiming at exploring the influence of vertical prestress
Wuxing Wu, Fengqiang Gong
exaly   +4 more sources

Tunnel rockburst with a single set of joints under true-triaxial stress condition

Journal of Rock Mechanics and Geotechnical Engineering
To investigate the influence of different joint conditions on the rockburst of a circular tunnel, a true-triaxial test of rockburst with a single set of joint conditions was conducted.
Shunchuan Wu, Kegang Li, Zhi Zheng
exaly   +3 more sources

Mechanism analysis and type determination of the rockburst of the Gaoloushan tunnel based on a study of rockburst fragments

工程科学学报, 2023
The Gaoloushan Tunnel is a control project for Longnan city and Jiuzhaigou, Sichuan Province. With the characteristics of "three high and one large," this project is a typical representative of a deeply buried, long highway tunnel under complex ...
Xiao-ming SUN, Chao REN, Dong-qiao LIU, Man-chao HE, Jin-kun YANG, Zhi-hu LI, Jia-jie ZHU, Jun-chao YUAN, Zhen-min QI   +8 more
doaj   +1 more source

Evolution and mechanism of rockburst induced by structural plane based on GDEM

Meitan xuebao, 2023
In the process of deep underground rock excavation, the surrounding rock of cave wall often causes some rockburst geological disasters due to the weakening of structural plane.
Xiong ZHOU, Fanzhen MENG, Zhufeng YUE, Wei WANG, Rongchao XU, Hui ZHOU, Xiaoming GUAN   +6 more
doaj   +1 more source

Research on the Impact of Different Force Directions on the Mechanical Properties and Damage Evolution Law of Sandstone with Different Hole Diameters

Advances in Civil Engineering, Volume 2021, Issue 1, 2021., 2021
In this research, a uniaxial acoustic emission experiment was conducted on rock samples with different positions and diameters of the hole, and an analysis was made on the impact of different hole positions and diameters on the mechanical properties, failure, energy conversion, and acoustic emission‐caused damage characteristics and laws of the rock ...
Fukun Xiao, Renhe Li, Le Xing, Guang-Liang Feng   +3 more
wiley   +1 more source

Experimental Study on the Influence Mechanism of the Structural Plane to Rockbursts in Deeply Buried Hard Rock Tunnels

Shock and Vibration, Volume 2021, Issue 1, 2021., 2021
During the excavation of a large number of deeply buried tunnels and mining projects, rockburst disasters occur frequently due to the complex geologic environment in deep underground, including high initial geostress, adverse tectonic actions, and excavation disturbance.
Guangtan Cheng, Jian Zhang, Qiang Gao, Chuanxiao Liu, Zhigang Tao   +4 more
wiley   +1 more source

Excavation unloading‐induced fracturing of hard rock containing different shapes of central holes affected by unloading rates and in situ stresses

Energy Science &Engineering, Volume 8, Issue 1, Page 4-27, January 2020., 2020
The integrated effect of unloading rates, in situ stresses, and sectional shapes of deep tunnels were considered. The entire failure process, destruction severity, and failure range were investigated and analyzed. The released strain energy is shown to present distinct variation trend under different conditions.
Fan Feng, Shaojie Chen, Diyuan Li, Wanpeng Huang, Kang Peng, Chuanwei Zang   +5 more
wiley   +1 more source

Mechanism and control strategy of buckling rockbursts of orthotropic slab

Yantu gongcheng xuebao, 2017
Brittle slabbing failure of deep highly-stressed hard rocks exists in engineering geology and mining engineering extensively, and the slab buckling rockburst induced by slabbing failure also brings severe challenge to safe and high-efficient excavation ...
FENG Fan , LI Xi-bing , LI Di-yuan , WANG Shao-feng
doaj   +1 more source