Results 181 to 190 of about 3,136 (215)

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
openaire   +1 more source

Supporting Method of Jinchuan Deep Roadway 1178 Sublevel

2008
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
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
openaire   +1 more source

Analysis of Deformation Damage in Deep Well Roadway and Supporting Countermeasures

Geotechnical and Geological Engineering, 2020
The roadway with a depth of 760 m in Menkeqing coal mine is located in a complex rock formation, with mudstone containing gangue, serious roof drainage, developed fractures, and surrounding rock softening under water. In addition, affected by mining, the original support of return air roadway in 2201 workface has been difficult to be effective. In this
Jianjun Shi, Jicheng Feng, Rui Peng, Quanjie Zhu   +3 more
openaire   +1 more source

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
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

Study on the Supporting Technology of Complex Deep Coal Roadways

Advanced Materials Research, 2012
Suffering from the effect of the high ground pressure, water spraying from roof surrounding rock or geological tactics such as faults or collapse columns, roadways used to have large deformation, even lead to caving accidents. Based on the supporting research of the above complex conditions, the supporting background of a typical roadway No.202 ...
openaire   +1 more source

Roadway stability analysis in a deep coal mine

2008
H Mitri, W Chen, B Nie, X He
openaire   +2 more sources

Design method for roadway support in deep mines

2020
Xu Jinhai, Zhang Dongsheng, Lu Deping
openaire   +1 more source

Protection of main roadways at deep levels

Soviet Mining Science, 1968
K. V. Koshelev, V. F. Trumbachev
openaire   +1 more source