Results 51 to 60 of about 4,725,858 (203)

The Instability Characteristics and Displacement Law of Coal Wall Containing Joint Fissures in the Fully Mechanized Working Face with Great Mining Height

Energies, 2022
Coal wall rib-spalling is regarded as a key technical problem influencing safe and efficient mining of fully mechanized working face with great mining height (FGH) while the coal wall stability is influenced by the strength of the coal body, of which the
Weibin Guo, Yu-Hui Li, G. Wang
semanticscholar   +1 more source

Reliability Simulation of Mining System for Mechanized Coal Face

, 2010
This paper first analyzes the logical relationship in mining system of fully mechanized coal face and then establishes the system reliability calculation model and simulation model.
Dao Hua Pan, Jian Ting Shi, Chun You Dong, Xue Liu   +3 more
core   +1 more source

Research on Gob-Side Entry Retaining Mining of Fully Mechanized Working Face in Steeply Inclined Coal Seam: A Case in Xinqiang Coal Mine

Sustainability, 2022
As a kind of non-coal pillar roadway support technique, gob-side entry retaining is of great significance to improve the production efficiency of a fully mechanized working face.
Xuming Zhou, Haotian Li, Xuelong Li, Jian-Wei Wang, Jingjing Meng, Mingze Li, Chengwei Mei   +6 more
semanticscholar   +1 more source

Three-dimensional simulation of feeding and coal caving in fully mechanized caving face based on YADE

, 2022
Based on the discrete element development environment YADE under Linux environment, this paper develops a three-dimensional simulation system for continuous feeding and coal caving in fully mechanized caving face.
YANG Yi, GAO Yang, LUO Kaicheng, WANG Keping, FEI Shumin
core   +1 more source

Research on the Prevention and Control Technology of Low Oxygen in The Upper Corner of Fully Mechanized Coal Mining Face in Daliuta Coal Mine

Academic Journal of Science and Technology
 In response to the problem of low oxygen in the upper corner of the return air of the 52506 fully mechanized mining face in Daliuta Coal Mine, the impact of atmospheric pressure and temperature changes on the low oxygen in the upper corner of the 52506 ...
Xipei Yang
semanticscholar   +1 more source

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Image enhancement methods based on video monitoring of fully mechanized mining face

, 2021
Aiming at the problem of all-round video monitoring of equipment and personnel abnormal conditions in fully mechanized coal mining faces and unclear images in low-light environments, an all-round video monitoring scheme is constructed and an image ...
XUE Guohua
core   +1 more source

Experimental Study on the Law of Gas Migration in the Gob Area of a Fully Mechanized Mining Face in a High-Gas Thick Coal Seam

Fire
To investigate the distribution law of gas migration in the gob area of a fully mechanized mining face, the similarity principle was employed, combined with Darcy’s law for porous media seepage, to derive the similarity criteria for simulating gas ...
Hong-Sheng Wang, Fu-Mei Song, Jianjun Shi, Yingyao Cheng, H. An   +4 more
semanticscholar   +1 more source

Theoretical Analysis of the Movement Law of Top Coal and Overburden in a Fully Mechanized Top-Coal Caving Face with a Large Mining Height

Processes, 2022
In recent years, with the rapid development of equipment manufacturing and advances in the research on mine pressure and rock mechanics, large-mining-height comprehensive mechanized coal mining technology has become increasingly widely used in thick-seam
Li Li, Xiao Zhang, Jianqiao Luo, Bin Hu
semanticscholar   +1 more source