Results 231 to 240 of about 64,796 (273)

Performance Analysis of Soft Roadway Surrounding Rock in Yushujing Coal Mine

Geotechnical and Geological Engineering, 2019
There are soft rock layers in Yushujing coal mine, especially the roof-floor lithology of 11,501 working face shows the characteristics as soft rock, resulting in the drift floor-heave and failure of bolt in the process of coal extraction, which affects safe and efficient mining.
Liu Xinjie, Zhanbo Cheng, Dai Jin
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Classification of Surrounding Rock of Bolt Supported in Coal Mine Roadway

Advanced Materials Research, 2014
Classification of Surrounding rock of roadway of Coal mine bolt supporting is the basis of bolting design, To scientifically design coal roadway bolting, classification of surrounding rock of coal roadway bolting must first be carry out. in this paper, the comprehensive application of knowledge engineering, rock mechanics, we developed the surrounding ...
Feng Shan Han, Li Song
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Research Status and Development Trends of Roadway Surrounding Rock Stability Classification

Applied Mechanics and Materials, 2014
Stability classification of roadway surrounding rock is of great significance as the prerequisite of safe production in roadway engineering. Based on a great number of issues analysis, the research status of roadway surrounding rock stability classification has been dissected from aspects of classification indexes and methods.
Ren Liang Shan, Xiang Song Kong, Jian Liu, Jian Fang Li, Yao Bai, Yong Wei Song   +5 more
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Stability assessment of rock surrounding an I-beam supported retreating roadway

Journal of Central South University, 2015
The installation of a back-wall guard-board is the key to successfully supporting underground retreating roadways in coal mines. Based on the coordinate support principle, and using an I-shaped steel support for the surrounding rock, a mechanical model was developed for the stability of the roadway support and surrounding rock.
Hong Yan, Ji-xiong Zhang, Lin-yue Li, Rui-min Feng   +3 more
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Research on Deep-Buried Roadway Surrounding Rock Stability and Control Technology

Geotechnical and Geological Engineering, 2018
The research analyzed the deformation and fracture mechanism of roadway surrounding rock based on the geological conditions and fracture characteristics of deeply buried roadway in Binchang Mine, and explored the inefficiency of the original supporting scheme considering the testing results of plastic zones of roadway surrounding rock, as well as ...
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Influence of Rock Burst and Other Disasters on Stability of Surrounding Rock of Roadway

Geotechnical and Geological Engineering, 2017
In this paper, selecting 3 levels and 6 factors with an orthogonal test approach to investigate the stability of roadway surrounding rock under dynamic disturbance. The intuitive analysis results show that the main factors that affect the roadway deformation is period, followed by the location, lateral pressure coefficient, amplitude and buried depth ...
Yushun Yang, Sijiang Wei, Dongming Zhang
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Non-orthogonal Failure Behavior of Roadway Surrounding Rock Subjected to Deep Complicated Stress

Rock Mechanics and Rock Engineering, 2023
Zong Ma, J. Zuo, F. Zhu, Hai-yan Liu, Chengyi Xu   +4 more
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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
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Surrounding Rock Deformation Properties and Control Technique for Roadway along Goaf in Soft Rock

Advanced Materials Research, 2014
Deformation of roadway driving along goaf was very serious during mining in Qidong coal Mine.This paper took the roadway as the engineering background, firstly, numerical simulation of the roadway has been made by FLAC3D,then its surrounding rock deformation properties and stress distribution were analyzed,the reinforcement technology was proposed ...
Ming Yang, Xin Zhu Hua, Deng Hong Chen
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Numerical analysis on stability of surrounding rock mass around deep roadway

Journal of Coal Science and Engineering (China), 2011
Numerical simulations of the deep roadway were carried out through application of the strain-softening constitutive model. Differences between the deep and shallow roadway of the rock bearing structure were analyzed. Influences of the supporting resistance on the rock bearing structure at the deep roadway were discussed.
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