Results 61 to 70 of about 2,183,848 (145)

Deformation Failure Characteristics and Maintenance Control Technologies of High-Stress Crossing-Seam Roadways: A Case Study

Applied Sciences, 2023
The surrounding rock structure of the crossing-seam roadway is poor and is susceptible to anchorage failure phenomena, such as top plate sinking and convergence deformation under high ground stress.
Zhengzheng Xie, Zhe He, Zhe Xiang, Nong Zhang, Jingbo Su, Yongle Li, Chenghao Zhang   +6 more
doaj   +1 more source

Deformation Simulation of Surrounding Rock at Faulted Zone during Roadway Drivage

, 2011
Sometimes transportation roadways needed to go through the water-conducted normal fault with high dip and big fault throw in order to ensure the mining continuance, the two key factors were fault water and deformation of surrounding rock which influenced
Hai Bo Bai, Xiao Er Zhao, Yue Ming Qi, Yang Jiao   +3 more
core   +1 more source

Research on Deformation and Failure Evolution of Deep Rock Burst Drivage Roadway Surrounding Rock under Dynamic Disturbance

, 2021
In order to explore the deformation and failure evolution characteristics of the surrounding rock during the connection process of the deep rock burst drivage roadway under the dynamic load disturbance, and based on this, the catastrophe mechanism of the
Xinggang Xu, Xingyu Wu, Zequan Sun, Hao Feng, Lishuai Jiang, Tao Guo   +5 more
core   +1 more source

Study on Deformation and Failure Laws of Surrounding Rock in Layered Rock Roadway by Discrete Element Method

, 2020
In order to study the deformation and failure laws of roadway surrounding rock under the condition of layered rock, the one orbit lane of Shandong Yuncheng Coal Mine was taken as the research background, and PFC2D discrete element software was adopted to
WANG Huifeng, SONG Libing
core   +1 more source

Numerical Research on Fractured Surrounding Rock Deformation and Failure Law Caused by Submarine Mining

, 2022
The existence of cracks has a considerable influence on the deformation failure characteristics and mechanical behavior of the surrounding rock mass. For submarine mining in particular, if a fractured zone in which water is flowing is formed between the ...
Guang Li, Gang Liu, Fengshan Ma, Jie Guo
core   +1 more source

Analysis of Influence Law of Burial Depth on Surrounding Rock Deformation of Roadway

, 2020
In order to study the influence of burial depth on the roadway deformation, the deformation data of more than 100 roadways were collected and classified.
Weijun Wang, Hai Wu, Xiaokang Wang, Gang Peng, Weijian Yu, Zizheng Zhang   +5 more
core   +1 more source

Control techniques for creep deformation of surrounding rock in deep underground roadways

PLOS One
As resource extraction extends to greater depths, surrounding rock in deep underground roadways exhibits pronounced creep deformation due to the coupled effects of high in-situ stress and time-dependent behavior. Conventional support systems face significant challenges in maintaining long-term stability under such conditions.
Lijie Ge, Dong Liu, Jiaxing Tao, Zhuang Zhang, Hao Lei, Yan Zhao   +5 more
openaire   +2 more sources

Study on Failure Mechanism and Control Technology of Roadway Surrounding Rock under Complex Occurrence Coal Seam

Geofluids, 2022
Aiming at the characteristics of large deformation and long deformation time under the mining influence of the 2254 east floor roadway surrounding rock, which under the condition of complex coal occurrence in Jiahe Mine.
Hai Wu, Jiaren Chen, Xu Gao, Tao Ling, Xuan Zhang, Qian Jia   +5 more
doaj   +1 more source

Experimental Study on Deformation Characteristics of Natural Sandstone Surrounding Rock Specimens at Different Unloading Rates

Advances in Civil Engineering
This study investigates the influence of excavation unloading rates on the deformation behavior of surrounding rock using a self-developed tunnel surrounding rock excavation unloading model test system.
Xiaorui Li, Jinping Liang, Gongyu Hou, Minglei Zhang, Zhandong Su, Qiaoyan Li   +5 more
doaj   +1 more source

Study on creep deformation and energy development of underground surrounding rock under four‐dimensional support

Deep Underground Science and Engineering
There is an urgent need to develop optimal solutions for deformation control of deep high‐stress roadways, one of the critical problems in underground engineering.
Zhanguo Ma, Junyu Sun, Peng Gong, Pengfei Yan, Nan Cui, Ruichong Zhang   +5 more
doaj   +1 more source