Results 131 to 140 of about 8,725 (226)

Research status and prospect of shearer positioning technology on fully mechanized coal mining face

Gong-kuang zidonghua, 2017
On the basis of development status of shearer positioning technology on fully mechanized coal mining face at home and abroad, characteristics of conventional shearer positioning technology, shearer positioning technology based on strapdown inertial navigation, shearer positioning error compensation technology based on strapdown inertial navigation, and
XIA Ting, LI Wei, WANG Chao, LI Yuche
openaire   +1 more source

Research on following automation technology of hydraulic support on fully—mechanized coal mining face

Gong-kuang zidonghua, 2018
In view of characteristics of full cutting depth bidirectional cutting technology which was widely used in fully—mechanized coal mining face, a following automation technology of hydraulic support on fully—mechanized coal mining face was put forward, which included three stages: middle following automation, head following automation and tail following ...
GAO Weiyong, ZHANG Minjuan
openaire   +1 more source

Market assessment of photovoltaic power systems for agricultural applications in Colombia [PDF]

The market potential for photovoltaic systems in the agricultural sector of Colombia is assessed. Consideration was given to over twenty specific livestock production, crop production, and rural services applications requiring less than 15 kW of power ...
Neyeloff, S., Steigelmann, W.
core   +1 more source

Design of centralized control system for hydraulic supports on fully-mechanized coal mining face

Gong-kuang zidonghua, 2015
In view of problem of low automation degree of current electro-hydraulic control system for hydraulic supports, a centralized control system for hydraulic supports on fully-mechanized coal mining face was designed, designs of hardware and software of the system were introduced, and realizing process of centralized control for hydraulic supports was ...
ZHAO Long, SONG Jiancheng, TIAN Muqin, XU Chunyu, YANG Shihua, YU Yayun, DONG Guangzhuai, YIN Weibin, ZHAO Xudong   +8 more
openaire   +1 more source

Evolution and dip effect of boundary spatial morphology of top-coal limit equilibrium zone in steeply dipping coal seam. [PDF]

Sci Rep
Wu X, Chi X, Lang D, Wu Y, Zhang Z, Chen S.   +5 more
europepmc   +1 more source

Working face status detection in coal mine based on YOLOv8-EST. [PDF]

Sci Rep
Wang H, Wu G, Yang Q, Huang Y, Lv Z, Yang J.   +5 more
europepmc   +1 more source

Coal thickness gauge using RRAS techniques, part 1 [PDF]

A noncontacting sensor having a measurement range of 0 to 6 in or more, and with an accuracy of 0.5 in or better is needed to control the machinery used in modern coal mining so that the thickness of the coal layer remaining over the rock is maintained ...
King, J. D., Rollwitz, W. L.
core   +1 more source

Optimization of drawing parameters based on top-coal flow law in thick-seam caving mining. [PDF]

Sci Rep
Wu S, Xu X, Wang J, Kong D, Wu G, Liu Q, Zuo Y.   +6 more
europepmc   +1 more source

Acid mine drainage control in mining areas: identification of groundwater recharge pathways and source reduction strategies. [PDF]

Sci Rep
Zhang C, Zhang F, Mu W, Li H.
europepmc   +1 more source

The impact of obstacle parameters on mid-high frequency noise propagation in comprehensive mining workfaces and safety implications. [PDF]

Sci Rep
Jia G, Yang M, Jiang D, Guo J, Liu M, Tao Y.   +5 more
europepmc   +1 more source