Results 11 to 20 of about 2,183,848 (145)

Displacement analysis of surrounding rock deformation of Baochang tunnel in Yunnan [PDF]

E3S Web of Conferences, 2019
According to the problem of deformation of surrounding rock when the double-wall method is adopted in the tunnel, the five tunnel monitoring points are set in the tunnel vault, arch waist and arch foot to simulate the tunnel excavation process.
Zhang Lianghan, Li Xiaolong, Ma Xinyun, Guo Hongyan, Li Ke   +4 more
doaj   +3 more sources

Analysis on Loose Circle of Surrounding Rock of Large Deformation Soft‐Rock Tunnel [PDF]

Advances in Civil Engineering, 2020
With the rapid development of tunnel construction in China, deep buried and long tunnel projects are emerging in areas with complex engineering geological conditions and harsh environment, and thus large deformation of tunnels under conditions of high in situ stress and soft rock becomes increasingly prominent and endangers engineering safety ...
Rui Wang, Yiyuan Liu, Xianghui Deng, Yu Zhang, Xiaodong Huang, Xiao Ding   +5 more
openaire   +3 more sources

Deformation Mechanism and Surrounding Rock Control in High‐Stress Soft Rock Roadway: A Case Study [PDF]

Advances in Civil Engineering, 2021
Stability control for soft and broken surrounding rock of roadways is one important segment of mining support. Taking 1412 Roadway of a mine in Guizhou province as a research background, this paper studies the large deformation of surrounding rock and the failure of bolts and cables.
Yuwen Gao, Chen Wang, Yong Liu, Yuyang Wang, Lianchang Han   +4 more
openaire   +3 more sources

Study on Deformation Characteristics of Surrounding Rock of Roadway with Coal–Rock Interface

Sustainability, 2023
Surrounding rock of roadway with a coal–rock interface is a common form in coal mines. In order to determine deformation characteristics and obtain the control principle of roadways with a coal–rock interface, the interface between the roof and coal seam was added to simulate the weak cohesion between the stratum.
Tuo Wang, Jucai Chang, Yijun Guo
openaire   +2 more sources

Stress and Deformation Characteristics of Tunnel Surrounding Rock under Alteration

Sustainability, 2023
Based on a typical project in an altered rock area, this study carried out numerical simulations using the FLAC3D software to calculate the changes in the stress field, deformation field, and plastic zone of the surrounding rock during the unsupported and supported excavation of a water transfer tunnel.
Chen, Yapeng, Wu, Tong, Yan, Xiaoshi, Shi, Shang, Li, Jianyong, Dong, Jinyu   +5 more
openaire   +2 more sources

Deformation Characteristics and Destabilization Mechanisms of the Surrounding Rock of Near-Vertical Coal–Rock Interbedded Roadway

Applied Sciences, 2023
Aiming at the problem of serious deformation and difficult support in the surrounding rock of the near-vertical coal–rock-interbedded roadway, this paper studies the stress distribution characteristics of the roadway surrounding the rock based on the engineering geological conditions of the Wudong coal mine, in particular with the +400 level B8 ...
Yanqiang Yao, Hongzhi Wang, Honglin Liu, Guodong Li   +3 more
openaire   +3 more sources

Enhancing mechanical characteristics of soft rock tunnel surrounding rock through radial yield pressure system [PDF]

Shuiwen dizhi gongcheng dizhi
This study investigated the efficacy of radial yield support as an active measure to mitigate stress and deformation in deep soft rock tunnels experiencing large deformation.
Qiuyu CHEN, Lu HUANG, Hu PAN, Jie CHEN, Qiang XIE, Qiuling LI, Zichen SHU, Xuhao ZHANG   +7 more
doaj   +2 more sources

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   +2 more sources

Deformation and Failure Mechanism of Surrounding Rock in Mining‐Influenced Roadway and the Control Technology [PDF]

Shock and Vibration, 2021
Aiming at the problem of surrounding rock deformation and failure of mining roadway and its control, a mechanical model of the circular roadway under the mining environment is established, and the implicit equation of the plastic zone boundary is derived.
Jicheng Feng, Shuaifeng Yin, Zhiheng Cheng, Jianjun Shi, Haoyu Shi, Haitao Xu, Shuying Guo   +6 more
openaire   +3 more sources

Fracture distribution and deformation mechanism of surrounding rock in two-way extremely unequal pressure soft rock roadway [PDF]

Meitan xuebao
The failure of butterfly plastic zone in roadway surrounding rock is an important reason for the large deformation of roadway surrounding rock. In recent years, it has attracted the attention of roadway support workers.
Weijun WANG, Yujie MA, Lei FAN, Chao YUAN, Hai WU, Xinyu TIAN   +5 more
doaj   +2 more sources