Results 1 to 10 of about 16,431 (261)

Study on Stability of Round Tunnel Surrounding Rock [PDF]

MATEC Web of Conferences, 2018
Tunnel excavation will lead to the immediate surrounding rock unloading caused by the surrounding rock stress release, the stability of the surrounding rock have a certain impact.
Yan NIU, Yafei Ji, Zhao Wang
doaj   +2 more sources

Research on Surrounding Rock Stability Affected by Surrounding Rock Pressure and Rock Fracture under Blasting Vibration Load Action

Advances in Civil Engineering, 2022
The influence mechanisms of factors, such as high confining pressure and in situ stress caused by deep mining on the stability of surrounding rock of roadways, are complex. Particularly, the motion and energy release of the rock mass medium can be caused
Qingjie Qi, Shuai Huang, Yingjie Liu
doaj   +2 more sources

Mechanical characteristics and stability analysis of surrounding rock reinforcement in rectangular roadway

Scientific Reports, 2022
The stability of surrounding rock with bolt support depends on the stability within the reinforcement range. To understand the reinforcing mechanism of a rectangular roadway bolt fully and accurately, a quantitative method for evaluating the stability of
Shuan-Cheng Gu, Pan Wang, Chao-Fan Yang
doaj   +3 more sources

Stability Analysis of Surrounding Rock of an Underground Cavern Group and Excavation Scheme Optimization: Based on an Optimized DDARF Method

Applied Sciences, 2023
The surrounding rock stability of an underground cavern group is an important issue in the process of cavern excavation, which has the characteristics of large displacement, discontinuity and uneven deformation, so the calculation and analysis are very ...
Hai-Ping Ma, Nik Norsyahariati Nik Daud, Zainuddin Md Yusof, Wan Zuhairi Yaacob, Hu-Jun He   +4 more
doaj   +3 more sources

Influence of adjacent undercutting line positions on surrounding rock stability in block caving. [PDF]

Sci Rep
Abstract In the block caving mining method, deformation and collapse can occur in roadways due to vertical stress concentration in front of the undercut line. Therefore to better understand this behavior, we establish a mechanical model of two neighboring solidly-supported and two neighboring simply-supported stepped bottom space ...
Cao Y, Hua X, Zhang H.
europepmc   +3 more sources

Stability of surrounding rock in roadways with fractured rock mass: mechanisms and effects of layout optimization. [PDF]

Sci Rep
Abstract The stability of surrounding rock in coal mine roadways remains a fundamental concern in underground engineering. Rational roadway layout is essential to prevent strength degradation from fracture coalescence and reduce instability risks.
Hao H, Tian B, Li G, Sun Y, Hang Y, He J, Yuan Y.   +6 more
europepmc   +3 more sources

Influence of variation in construction parameters on the stability of the surrounding rock in soft rock tunnels

Frontiers in Earth Science
The stability of the surrounding rock is an important engineering challenge for soft rock tunnels. Based on the FLAC3D finite difference numerical simulation software, this paper analyzes the typical area of the Fenghuang Mountain tunnel in the Chuxiong section of the Central Yunnan Water Diversion Project.
Junhong Li, Shaopan Hong, Yu Xiong, Yuxue Chen, Qiqiang Nie   +4 more
exaly   +3 more sources

Optimization of Rockburst Risk Control Measures for Deeply Buried TBM Tunnels: A Case Study

Buildings, 2023
Choosing reasonable control measures for different intensity rockburst risks not only effectively prevents and mitigates rockburst risks but also reduces time and engineering investment costs.
Pengxiang Li, Jinshuai Zhao, Wankui Bu, Wenjing Niu, Pinpin Liu, Minghong Sun   +5 more
doaj   +1 more source

Stability Analysis of Surrounding Rock During Construction of Mountain Integrated Pipe Gallery

Taiyuan Ligong Daxue xuebao, 2022
The stability of surrounding rock is an important concern in the investigation, design, and construction of mountain integrated pipe gallery. On the basis of the DK6+180 section of the Winter Olympics Integrated Pipe Gallery, the stability of surrounding
Honghu YUAN, Wenjie XIE, Hongen LI
doaj   +1 more source

Surrounding Rock Stability Classification Method of Coal Roadway Based on In Situ Stress

Advances in Civil Engineering, 2021
In situ stress is one of the most important factors affecting surrounding rock stability classification of coal roadway. Most surrounding rock stability classification methods do not fully consider the influence of in situ stress.
Yongjie Yang, Gang Huang, Lingren Meng
doaj   +1 more source