Results 171 to 180 of about 3,080 (218)

Bearing characteristics and control measures of coal rib under the condition of composite roof in deep mining. [PDF]

Sci Rep
Yang S, Wang X, Gu Q, Chen J.
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Research and application of pre-excavated double withdrawal channel technology without coal pillar abandonment. [PDF]

Sci Rep
Zhang J, Shi Z, Wu C, Xiao F, Shi L.
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Reasonable drilling angle and technology application for pre-cracking thick-hard roofs before driving gob-side roadways in ultra-thick seams. [PDF]

Sci Rep
He F, Wu Y, Wang D, Zhang J, Tao K.
europepmc   +1 more source

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Research on Support Technology in Deep Roadway of Huafeng Mine

Advanced Materials Research, 2013
Huafeng mine 1141 roadway (the 5th) that the buried depth is nearly 1000m, the angel of roadway is larger, the physical and mechanical characteristics of surrounding rock are poor, belongs to typical large inclined angle soft rock deep roadway. Using the reasonable supporting way is very important to control the deformation of the surrounding rock in ...
Jie Kong, Peng Chen, Jun Chen, Qing Shu Liu, Zhen Ma   +4 more
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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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'Double shell' control and support classification in deep roadways

International Journal of Mining and Mineral Engineering, 2015
Based on the deformation and destruction characteristics of deep roadways, we developed a 'double shell' support theory, which applied both deep and shallow grouting along with bolts (cable) as the support shells. Through investigation of the support conditions of deep roadways in north China and referring to the Standard for engineering classification
Bensheng Yang, Huiliang Li, Lihui Sun, Wanbin Yang   +3 more
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Analysis of rheology in deep high stress soft roadway

2011 International Conference on Remote Sensing, Environment and Transportation Engineering, 2011
With the increase of mining depth, the mechanical feathers and mechanical behaviors could become more and more serious in the complex mechanical environment of “three-high and one-disturbance”. The solid rock in shallow mining shows nonlinear mechanical characteristics of soft rocks while entering deep mining, such as large deformation, high ...
null Qingbin Meng, null Weiguo Qiao, null Dengge Lin, null Yanxin Lv   +3 more
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Research on Loose Circle Test of Deep Broken Roadway

Applied Mechanics and Materials, 2014
To control the stability of deep well broken surrounding rock, single-hole sonic method is used to test the loose circle of-1180 east-rock main roadway and its damage range. The study indicates the loose circle is about 1.8 ~ 2.2 m, which is typical large loose circle.
Feng Zhan Cui, Hua Jun Xue, Tian Yu He, Tao Tao Li, Jin Jing Zuo, Xi Guan   +5 more
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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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