Results 131 to 140 of about 16,115 (235)

Study on dust migration patterns and disturbance deflection dust control technology in fully mechanized mining faces

Gong-kuang zidonghua
To address the limited effectiveness of dust prevention technologies such as ventilation dust removal and spray dust suppression in fully mechanized mining faces with high dust concentrations, the study used the 11309 fully mechanized mining face at ...
LIU Ziwen
doaj   +1 more source

Catch Me If You Can: Education and Catch-up in the Industrial Revolution [PDF]

Existing evidence, mostly from British textile industries, rejects the importance of formal education for the Industrial Revolution. We provide new evidence from Prussia, a technological follower, where early-19th-century institutional reforms created ...
Erik Hornung, Ludger Woessmann, Sascha O. Becker   +2 more
core  

Simulation of rapid loading systems in iron ore mines [PDF]

, 2010
In the mining industry, it is observed that sudden break-down of any equipment may stop the entire system, resulting in drastic production losses and enhancing the cost production. In this paper, the probability of sudden break down of each equipment are
Sandeep, Manakeshwar, Sumeet , Verma
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Research on conductive knowledge mining for dust removal strategy in fully mechanized mining faces

Procedia Computer Science, 2023
Ziyuan Liang, Chunyan Yang
openaire   +1 more source

Study of Application of L.E.D. Lighting System in Mines [PDF]

, 2012
The work done on the project contains field observations for lighting in underground and open-cast mines showing general requirements of lighting and sources of lighting. Regulations related to mine lighting are briefly enumerated.
Mishra, Hitesh
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Research on overburden structural characteristics and support adaptability in cooperative mining of sectional coal pillar and bottom coal seam

Scientific Reports
In the mining process of the II1 coal seam at Zhaogu No. 2 coal mine, a method of stratified mining is employed, leaving relatively wide coal pillars in sections.
Du Feng, Fan Xuan, Li Zhenhua, Cao Zhengzheng, Wang Wenqiang, Lu Feifei, Jiang Yufei   +6 more
doaj   +1 more source

Research and application of automatic mining technology of unmanned fully-mechanized coal mining face

Gong-kuang zidonghua, 2015
In view of requirement of high efficient mining for unmanned fully-mechanized coal mining face, an automatic mining technology scheme of unmanned fully-mechanized coal mining face was proposed which takes cooperative control technology as core, automatic control technology of shearer, hydraulic support and scraper conveyor as basis, self-advancing ...
openaire   +1 more source

POLICY ALTERNATIVES TO MANAGE SUPPLY: MANAGEMENT OF OUR PRODUCTIVE CAPACITY [PDF]

Agricultural and Food Policy,
Sundquist, W. Burt
core   +1 more source

Moving mechanism and active control method of scraper conveyor in fully-mechanized mining face

Meitan kexue jishu
In order to study the movement mechanism of the scraper conveyor in the fully-mechanized mining face, the influence of cutting process, working face dip angle and thrust force of hydraulic support on the movement of scraper conveyor are analyzed comprehensively, the movement mechanism of scraper conveyor is clarified, the critical position and ...
Fei ZHAO, Feng ZHANG, Quanzhong LI, Dongdong QIN, Hui WEI   +4 more
openaire   +1 more source

Experimental research on overlying strata movement and fracture evolution in pillarless stress-relief mining [PDF]

, 2015

core   +1 more source