Results 201 to 210 of about 49,160 (240)

'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
openaire   +1 more source

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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Supporting Method of Jinchuan Deep Roadway 1178 Sublevel

2009
Deep roadway failure mechanism of Jinchuan is analyzed. The result shows that anchor cable should be used and more attention should be paid on the floor supporting. Several supporting methods are put forward combined with physical circumstance of deep roadway 1178 sublevel, failure mechanism and previous supporting experiences.
Chunli Yang, Yongcai Wang
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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
openaire   +1 more source

Surrounding Rock Classification in Deep Roadway of Coal Mine

Advanced Materials Research, 2011
With the increase of mining depth，most coals in China have been deep mining stage. Compared to the shallow roadway, the characteristics of deformation-failure of surrounding rock show significant differences in the deep roadway, and the deep rock features of the surrounding rock are not considered in the traditional classification of roadway.
Bin Liu, Quan Sheng Liu
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The Numerical Analysis on Stability of Deep Roadway Support System

Applied Mechanics and Materials, 2012
The effect of the roadway with no supporting and roadway that was reinforcement by rock bolts and anchor robs, anchor rod combined bolting shoring, anchor rod combined anchor rope and lining timbering was simulated by using numerical simulation software FLAC3D. The results showed that the deformation of no supporting roadway is maximal, and the maximal
Zhen Yan Xiao, Yu Liu
openaire   +1 more source

Parameter Optimization on Bolt Supporting of Deep Roadway Surrounding Rock

Advanced Materials Research, 2013
Aimed at the parameter optimization problem of bolt supporting in deep high stress roadway surrounding rock, by the numerical simulation method, support schemes were evaluated and optimized on north wing blind incline shaft in Shi-shang Mine. Based on original support scheme and considering the bolt spacing, row spacing and length, twenty programs were
Yan Kai Zhang, Wei Jian Yu
openaire   +1 more source

Roadway Image Preprocessing for Deep Learning-Based Driving Scene Understanding

2019 IEEE International Conference on Big Data and Smart Computing (BigComp), 2019
In this paper, a road lane is detected as a reference point in a road driving image, and the objects that are likely to affect the driving situation are detected depending on a reference point, and then the remaining objects are excluded from the road driving situation recognition.
Kyeong-Sik Park, Sung-Su Jang, Hyeok-June Jeong, Young-Guk Ha   +3 more
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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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Study on propagation laws of blasting vibration in deep roadway

2011 Second International Conference on Mechanic Automation and Control Engineering, 2011
According to field condition, blasting vibration of medium deep-hole blasting in deep rock entry were tested for study the influence of entry by blasting vibration in coalmine, attenuation coefficient α of earthquake wave and equation coefficient k are acquire by regression and analysis on point vibration peak velocity and acceleration of tested ...
null Haibo Wang, null Ying Xu
openaire   +1 more source