Results 31 to 40 of about 10,848,381 (289)

Extension characteristics of the “Butterfly-shaped” plastic zone and stability control of deep mining roadway in Xingdong mine

矿业科学学报, 2017
The distribution of plastic zone of surrounding rock in deep mining roadway is the key to control the stability of surrounding rock. Taking the deep mining roadway of Xingdong Mine as the research background, according to the "butterfly-shaped" plastic ...
Li Yongen, Guo Xiaofei, Ma Ji, Huo Tianhong, Zhang Hong   +4 more
doaj   +1 more source

Constant-Resistance, Rigid, and Flexible Coupling Support Technology for Soft Rock Entrances in Deep Coal Mines:A Case Study in China

Advances in Materials Science and Engineering, 2020
The stability control of a soft rock roadway is a crucial problem for sustainable utilization of limited coal resources in deep mining practices. To solve it, the soft rock types and failure mechanism of −890 entrance surrounding rock have been analyzed,
Yong Zhang, Chengwei Zhao, Ming Jiang, Jiaxuan Zhang, Chen Chen, Xiaoyu Zheng, Xiaoming Sun, Huichen Xu   +7 more
doaj   +1 more source

Research on large deformation mechanism and repair support technology of high stress soft rock roadway

Gong-kuang zidonghua, 2021
In the context of the destruction and continuous deformation of the surrounding rock of the high stress soft rock roadway, how to scientifically and reasonably repair and support the roadway that has undergone large deformation, and how to achieve ...
YAN Xiaowei
doaj   +1 more source

Reinforcement design and control of rock slopes above tunnel portals in Northern Italy [PDF]

, 2004
The stability features of slopes located above the portals of tunnels along important roads are here presented, together with two examples for reinforcement and protection works.
Del Greco, O., Oggeri, Claudio, DEL GRECO O.   +2 more
core   +1 more source

Case Study on the Stability Control of Broken Surrounding Rock in Roadway Excavation on the Edge of a Collapsed Stope Area

Advances in Civil Engineering, 2021
Predicting and controlling the collapse of surrounding rock (especially broken rock masses) in underground chambers is an important topic in mining and geotechnical engineering.
Yabin Wu, Jianhua Hu, Chengyu Xie, Dongping Shi   +3 more
doaj   +1 more source

Numerical study on surrounding rock control effect of gob-side entry retaining by roof cutting and pressure relief

Meikuang Anquan, 2021
To study the influence of roof cutting and pressure relief on the surrounding rock control effect of gob-side entry retaining, numerical simulation was carried out by UDEC software, and the stress and deformation characteristics law of roadway ...
DENG Xiaogang, LUAN Hengjie, LIU Jianrong
doaj   +1 more source

Controlling Effects of Surrounding Rock to Coal Seam Gas Occurrence

Open Journal of Geology, 2013
Surrounding rock of coal seam was one of the important factors to gas occurrence. The coal seam gas occurrence was studied by the index of roof strata thickness or sand content rate; we found that there were certain shortcomings. In order to reasonably evaluate the influence of coal seam surrounding rock on gas occurrence in Panji mining area, we ...
Laibin Wang, Shiwen Zhang, Jinshan Shen, Zhongwen Zhang, Xiaotong Yang   +4 more
openaire   +2 more sources

Instability Mechanism and Key Control Technology of Deep Soft Rock Roadway under Long-Term Water Immersion

Advances in Civil Engineering, 2021
More and more attention has been paid to the supporting problem of deep soft rock roadway floor with long-term water immersion in recent years. However, the existing soft rock roadway support technology rarely takes into account the influence of the ...
Wei Jing, Xu Wang, Pengwei Hao, Laiwang Jing, Weipei Xue   +4 more
doaj   +1 more source

Failure Mechanism and Control Countermeasures for Argillaceous Surrounding Rock of Horsehead Roadway under High Stress

, 2023
The argillaceous surrounding rock of a horsehead roadway under high stress conditions is prone to deformation and failure, and the control of its long-term stability is difficult.
Qi Cui, Guanghui Zhu, Linyou Jiang, Jiale Liu, Xing Gao, Hexi Jiao, Qingbin Meng, Zhiyi Zhang, Deyu Qian, Fujia Xing   +9 more
core   +1 more source

Damage evolution and failure warning in early-age flexible-formwork concrete for underground support

Geohazard Mechanics
The evolution law of mechanical properties and damage characteristics of early-age flexible formwork filling concrete have a decisive influence on the stability control of surrounding rock of large deformation roadway.
Zijun Han, Hongtao Liu, Xiaofei Guo, Jialu Liang, Zhongjin Qiao, Chenxiao Cao, Lei Guo, Xiaogang Chen   +7 more
doaj   +1 more source