Results 191 to 200 of about 26,696 (230)

Applying Neural Network to Predict Roadway Surrounding Rock Displacement

2020 5th International Conference on Intelligent Informatics and Biomedical Sciences (ICIIBMS), 2020
Apply artificial intelligence methods to solve underground engineering problems. First, the factors affecting the displacement of the surrounding rock of the mine roadway are analyzed, and the four indexes that affect the displacement of the roadway are used as the input layer of the neural network. Then, the approach rate of the roadway is used as the
TANG Jun-Yi, ZHANG Min, ZHANG Miao, YU Wan-Jun, TIAN Yu   +4 more
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Deformation characteristics of surrounding rock of broken and soft rock roadway

Mining Science and Technology (China), 2009
Abstract A similar material model and a numerical simulation were constructed and are described herein. The deformation and failure of surrounding rock of broken and soft roadway are studied by using these models. The deformation of the roof and floor, the relative deformation of the two sides and the deformation of the deep surrounding rock are ...
Jin-xi WANG, Ming-yue LIN, Duan-xin TIAN, Cun-liang ZHAO   +3 more
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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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FAILURE CHARACTERISTICS OF SURROUNDING ROCKS IN COAL SEAM MINING ROADWAY

Bilimsel Madencilik Dergisi, 2022
In order to provide technical support for grouting engineering of broken surrounding rock in roadway. Taking a certain mine in Jin coal mine area as a test mine, drilling TV and segmented water injection tests were used to detect the damage characteristics of surrounding rocks, and the numerical simulation of stress characteristics during the failure ...
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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
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Deformation Simulation of Surrounding Rock at Faulted Zone during Roadway Drivage

Advanced Materials Research, 2011
Sometimes transportation roadways needed to go through the water-conducted normal fault with high dip and big fault throw in order to ensure the mining continuance, the two key factors were fault water and deformation of surrounding rock which influenced the digging safety and stabilization of roadways. On the base of analyzing clearly the FB11fault in
Yue Ming Qi, Xiao Er Zhao, Hai Bo Bai, Yang Jiao   +3 more
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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
openaire   +1 more source