Results 11 to 20 of about 8,734 (226)

Backfilling technology and strata behaviors in fully mechanized coal mining working face

International Journal of Mining Science and Technology, 2012
Abstract Based on the principle of fully mechanized backfilling and coal mining technology and combined with the Xingtai Coal Mine conditions, we mainly optimized the coal mining equipment and adjusted the coal mining method in the Xingtai Coal Mine 7606 working face for implementation this technology.
Qiang Zhang, Jixiong Zhang, Yanli Huang, Feng Ju   +3 more
openaire   +3 more sources

Numerical and in-situ investigation on the ground behavior of the end roof in fully mechanized caving face [PDF]

E3S Web of Conferences, 2021
Fully mechanized top coal caving is a major high-yield and high-efficiency coal mining method for thick seam mining. At present, it is affected by the further popularization and application of fully mechanized caving mining because the recovery rate is ...
Zang Chuanwei, Chen Miao, Chen Yang, Zhuang Xuean, Zhai Chenming, Zhu Hongmo   +5 more
doaj   +1 more source

Effect of Face Length in Initial Mining Stage of Fully Mechanized Top-coal Caving Face With Large Mining Height [PDF]

Geotechnical and Geological Engineering, 2021
Abstract Based on the field measurement of the end resistance of the support during the initial weighting of the basic roof and the macroscopic mine pressure behavior during the weighting period of 101,22211,103 and 301 fully mechanized caving face in Changchun Xing Coal Mine, the mine pressure law of the working face is summarized and compared,
Jianhang Wang, Yao Lu, Changxiang Wang, Guangwei Xu, Chengran Zhang   +4 more
openaire   +1 more source

Numerical Simulation of Coal Wall Cutting and Lump Coal Formation in a Fully Mechanized Mining Face [PDF]

International Journal of Coal Science & Technology, 2020
Abstract It is difficult to accurately calculate the lump coal rate in a fully mechanized mining face. Therefore, a numerical simulation of the coal wall cutting process, which revealed the crack expansion, development, evolution in the coal body and the corresponding lump coal formation mechanism, was performed in PFC2D.
Yong Yuan, Shengzhi Wang, Wenmiao Wang, Cheng Zhu   +3 more
openaire   +1 more source

Strata behavior at fully-mechanized coal mining and solid backfilling face [PDF]

SpringerPlus, 2016
Taking Ping Dingshan Coal Mine Group 12 as an example, this paper explains the system layout, key equipment and backfilling technology in detail. It probes into the characteristic of rock strata movement behavior and surface deformation above the gob area through in-site measurement method. The results show that as the overburden strata are effectively
Yin, Wei, Chen, Zhiwei, Quan, Kai, Mei, Xiancheng   +3 more
openaire   +2 more sources

Study on overburden movement law and ground pressure behavior in fully mechanized top coal caving face under the disturbance of upper coal seam

Meikuang Anquan, 2023
In recent years, most of the coal mines in Zhungeer Coalfield have entered the mining of the second main coal seams, such as 6#, 10# and 11#, with an average thickness of more than 10 m, so most of the coal mines use fully mechanized caving mining ...
Hua NAN, Zhuoying WANG
doaj   +1 more source

Study on the Mine Pressure Law and the Pressure Frame Mechanism of an Overlying Goaf in a Shallow Coal Seam

Shock and Vibration, 2021
To study the problems of dynamic load pressure and frame pressure caused by the concentration of stress by coal extraction pillars during the mechanized short-distance mining of goaves in shallow coal seams, a frame pressure accident, in the Shendong ...
Haifeng Zhou, Qingxiang Huang, Yingjie Liu, Yanpeng He   +3 more
doaj   +1 more source

Research on key technology of intelligent fully mechanized caving face construction in Baode Coal Mine

Gong-kuang zidonghua, 2023
The current research achievements in the construction of intelligent fully mechanized caving face lack systematic implementation case for a specific fully mechanized caving face.
WU Xicang, ZHANG Xueliang, RUAN Jinlin, WANG Zhiqiang   +3 more
doaj   +1 more source

Concept, realization path and key technologies of intelligent mining based on transparent longwall face

Gong-kuang zidonghua, 2020
Taking transparent coal seam, transparent fully-mechanized mining equipment and transparent decision-making and control as core, concept of intelligent mining based on transparent longwall face was put forward, namely based on enhanced geological ...
WANG Feng
doaj   +1 more source

Failure characteristic and fracture evolution law of overburden of thick coal in fully mechanized sub-level caving mining [PDF]

, 2017
In mining process, the height of water flowing fractured zone is important significance to prevent mine of water and gas, in order to further research the failure characteristic of the overlying strata.
Fan, Cunhui, Qin, Qirong, Wang, Xiaolei
core   +1 more source