Results 71 to 80 of about 2,550 (175)

Anti-collision detection method of shearer and hydraulic support based on BSL-YOLOv8n

Meitan kexue jishu
Aiming at the problem that it is difficult to obtain the spatial information of the top equipment of the fully mechanized mining face with large mining height and the interference collision between the shearer and the hydraulic support, an intelligent ...
Ruyu YAN, Guofa WANG, Mingzhong LI, Jinhu ZHANG, Zhifeng WANG, Youwang XING, Jiangbin LIU, Mushi MI, Huijun HAN   +8 more
doaj   +1 more source

Research progress on technology and equipment for in-situ gangue disposal

Meitan kexue jishu
Underground coal mining generates substantial amounts of coal gangue, which not only consumes limited underground transportation and hoisting capacity while increasing production costs, but also risks causing environmental issues such as soil ...
Yongcun GUO, Kun HU, Guoyong SU, Deyong LI, Lei HE, Qisheng LUO, Yuhao YANG, Ziqiang LIU, Yi ZHANG, Zehao WU, Baoying LIU, Ya ZHI, Jiandong HUO   +12 more
doaj   +1 more source

Optical frequency domain reflectometry response mechanism of overburden movement and fracture evolution under repeated mining of closely spaced double coal seams

Gong-kuang zidonghua
At present, Optical Frequency Domain Reflectometry (OFDR) technology has made certain progress in multi-seam stress monitoring, but few studies have applied OFDR to investigate the dynamic evolution of overburden fractures under repeated mining of ...
CHENG Xiang, JIANG Yanan, ZHOU Jiang, ZHAO Guangming, WANG Kun, WANG Anhong, HAN Guanghui   +6 more
doaj   +1 more source

Unmanned operation of load-haul-dump vehicles in mining environments.

, 2011
Underground mines typically do not represent the best working conditions for humans, and many mining companies have the intent to remove all humans from the ore extraction areas. To achieve this goal automation of the mining machinery is required.
openaire   +2 more sources

Dynamic splitting mechanical properties and strength prediction model of freeze–thawed water-saturated sandstone

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
To evaluate the effects of freeze–thaw (F–T) cycling on the tensile performance and energy evolution of water-saturated sandstone, this study utilized slope rock specimens collected from a high-altitude open-pit mine in western China.
Ying Xu, Haotian Xie, Qiangqiang Zheng, Chengjie Li, Guang Yang   +4 more
doaj   +1 more source

Thermal Analysis of High-Power Water-Cooled Permanent Magnet Coupling Based on Rotational Centrifugal Fluid–Structure Coupling Field Inversion

Energies
An efficient and reliable heat dissipation system is essential for the safe and stable operation of high-power water-cooled couplers. However, thermal analysis methods accounting for the centrifugal effects on coolant flow remain limited.
Yuqin Zhu, Wei Liu, Hao Liu, Chuang Yang
doaj   +1 more source

An Analysis of Required Technologies for Developing Unmanned Mine Countermeasure System Based on the Unmanned Underwater Vehicle

Journal of the Korea Institute of Military Science and Technology, 2011
One of the most significant UUV(Unmanned Underwater Vehicle) applications is MCM(Mine Countermeasure), which makes good use of UUV characteristics to provide covert, rapid, controlled and efficient survey of a potential minefield without risking a human operator.
openaire   +2 more sources

Mechanisms behind the impacts of CO2 concentration on microbial methanogenesis in coal seams

Meitian dizhi yu kantan
Background Coal seams exhibit the extensive distribution of a variety of indigenous functional microorganisms. Among these, some archaea enable methane metabolism using CO2 as a substrate, providing the potential for the biological CO2 storage and ...
Junyu WANG, Bingjun LIU, Xiangqing JIANG, Ruifeng CHEN, Sheng XUE, Wanlong ZHOU, Yundu YANG   +6 more
doaj   +1 more source

Rubber content governs strength, energy dissipation, and failure transition in cemented tailings backfill

Materials & Design
Cemented tailings backfill is widely used to maintain the stability of underground openings, yet its brittleness limits deformation tolerance and energy dissipation.
Changcheng Wang, Ke Yang, Tong Wang, Yongqiang Hou, Bo Ren, Qiang Fu   +5 more
doaj   +1 more source

Experimental study on evolution characteristics of coal permeability under triaxial stress conditions

Meikuang Anquan
Mining stress disturbance causes dynamic evolution of the pore and fracture structures of disturbed coal under complex loading conditions, leading to nonlinear changes in permeability, which significantly affects gas drainage efficiency.
Han GAO, Xiaoyu CHENG, Aitao ZHOU, Yuxuan ZHU, Haiqing SHUANG   +4 more
doaj   +1 more source