Results 141 to 150 of about 823 (175)

Numerical Simulation Research on Deep Soft Rock Roadway

Applied Mechanics and Materials, 2012
The soft rock roadway support is one of difficult problems in the mineral engineering. For making the stress and strains of support system to be effective forecasted in the process of roadway support. The Adina finite element software is used to do numerical simulation about the strains of the supports system in the process of the Hama mountain roadway,
Bin Zhang, Xiang Lian Yu, Ning Liu, Feng Zhu   +3 more
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Development of fractures in soft rock surrounding a roadway and their control

Mining Science and Technology (China), 2011
Abstract As the excavation of roadway, new fractures will be formed and the pre-existing fractures extend with the redistribution of stress in surrounding rocks. Eventually, fracture zone and bed separation are formed in rocks because of the developed fractures.
Xuehua Li, Qiangling Yao, Jiankang Man, Chaoqun Chen, Lihui He   +4 more
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Soft Rock Roadway Reinforcement

2019
This chapter focuses on soft rock roadway support theory and technique. The coupling support theory is proposed that emphasises the optimum combination of support structure with surrounding rock to improve its self-support capacity. Based on the roadway deformation behaviour, the best support installation time is discussed from viewpoints of theory and
He Manchao, Han Jun, Cao Chen
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Study on Stability for Intersection of Deep Soft Rock Roadway

Advanced Materials Research, 2011
With the depth increasing continuously, more complicated of geological conditions, will make intersection in deep soft rock roadway is very difficult to support. In order to solve the intersection problem of difficult to support, combined with the third levels of the Fifth Coal Mine of Hemei, the coupling supporting design—anchor-mesh-cable + truss to ...
Zhan Jin Li, Yang Zhang, Xue Li Zhao
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Study on Deformation Failure Mechanism and Control Technology of Surrounding Rock in Soft Rock Roadway

Geotechnical and Geological Engineering, 2021
In order to reveal the mechanism of surrounding rock deformation and instability of soft rock roadway in 12# working face of Puhe coal mine, and synthetical analysis of the surrounding rock, deformation and failure of the roadway shows that the original support scheme is difficult to maintain the stability of roadway.
Xiangqian Wang, Yingming Li, Chengxing Zhao, Yi Wang, Shunjie Huang   +4 more
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Discussion on Support Problems on Soft Rock Roadway

Advanced Materials Research, 2014
Because of the rapid development of China's coal industry, the average depth of mine increase continuelly, the stress increases obviously, roadway are often difficult to support in many coal mine especially in soft rock. Soft rock have traits of low strength, expansion and rheology seriously, affect the safety of mine production and economic benefits ...
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Analysis on Deformation and Support Technology of Deep Soft Rock Roadway

Applied Mechanics and Materials, 2014
The deformation and support technology of soft roadway is a very important problem in mine. Based on the roadway’s deformation of Jian Xin Mine of Jiangxi Fengcheng Mining Bureau, the mechanics mechanism and reasons of the soft rock roadway deformation are analyzed.
Yong Sheng Liu, Wang Liu, Xing Yu Dong
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Mine Soft Rock Roadway Fine Blasting Application Technology

Advanced Materials Research, 2014
The engineering background of this paper is located in the southern air return roadway of Tangkou Coal Mine. As a result of its characteristics such as deep buried depth, high ground pressure and enormous over-break, when drilling and blasting tunnels, fine management and control of blasting can be used to solve the problem of deep soft rock tunnel ...
Peng Li, Chao Zhang, Hai Liang Wang
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Floor Heave Controlling Technology of Deep Soft Rock Roadway

Applied Mechanics and Materials, 2012
The floor heave is one of soft rock roadway distortion. Based on soft rock supporting theory and engineering practice, the program bolt-mesh-anchors and floor corner, bolts coupling support to control floor heave of the soft rock roadway is proposed. Numerical simulation results show that bolt-anchors can mobilize the strength of the deep adjacent rock,
Zhan Jin Li, Shi Bo Li, Xue Li Zhao
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Study on Surrounding Rock Deformation Characteristics and Control Technology in Deep Soft Rock Roadway

Advanced Materials Research, 2012
To explore support technical problems in deep soft rock roadway, according to deep complicated geological conditions in 102 transport rise of Yuandian Mine, obtaining deformation characteristics of roadway in the initial support scheme under conditions, analysing the reasons of instability and failure of surrounding rock, proposing the surrounding rock
Wen Hua Zha, Xin Zhu Hua
openaire   +1 more source