Results 31 to 40 of about 2,304 (177)

The histogram method of locating the capacity for internal dump at open pit coal mines in the Kemerovo region [PDF]

Vestnik MGTU, 2016
Using the special method of mining-geometric analysis of a pit field the criteria graphical histogram dependences determining the choice of location for the container inner blades to the regime of current pit field have been built and evaluated.
Selyukov A. V.
doaj   +1 more source

Monitoring of ecosystem changes in open-pit coal mines based on segmentation of multi-dimensional hypervolume

Meitan kexue jishu
Open-pit coal mining and ecological restoration jointly drive significant changes in the mine ecosystem. In the new era, monitoring and evaluation of mine land reclamation and ecological restoration consider ecosystem degradation and recovery as ...
Yongjun YANG, Xiuwen XIA, Jing DONG, Xinxin CHEN, Yufan XU, Shaogang LEI   +5 more
doaj   +1 more source

CFD Simulation Based Ventilation and Dust Reduction Strategy for Large Scale Enclosed Spaces in Open Pit Coal Mines—A Case of Coal Shed

Sustainability, 2023
The coal shed is an enclosed space where raw coal is stored and handled. The intensive operation of the machinery inside the coal shed generates a large amount of dust, and the wind speed inside the enclosed space easily leads to a high concentration of ...
Zhongchen Ao, Zhiming Wang, Wei Zhou, Yanzhen Qiao, Abdoul Wahab, Zexuan Yang, Shouhu Nie, Zhichao Liu, Lixia Zhu   +8 more
semanticscholar   +1 more source

Review on seismic response of tunnel engineering: from dynamic characteristics of rock mass to structural earthquake-resistant analysis

Meitan xuebao
Although tunnel structures are confined by the surrounding strata, and relative movement between the structure and strata is not obvious under seismic loads, resulting in significantly superior seismic performance compared to surface structures, they are
Yujing JIANG, Xingda WANG, Xuepeng ZHANG
doaj   +1 more source

“Seven in one” effect inspection method system of water cut-off curtain in open-pit coal mine

Meikuang Anquan, 2023
In order to realize green, safe and efficient mining in open-pit coal mines, water cut-off curtain as a new technology of energy saving, carbon reduction and water conservation, has been continuously applied to open-pit coal mines. The cut-off curtain of
ZHANG Yan
doaj   +1 more source

Application of Raman-infrared spectroscopy in the evaluation of organic matter characteristics and thermal maturity of highly-to overmature source rocks

Unconventional Resources
With the increasing depletion of conventional oil and gas resources, deep to ultra-deep petroleum resources have become a critical direction for global energy strategies. The scientific evaluation of highly-to overmature source rocks developed in deep to
Zhuanghao Peng, Xiangchun Chang, Guanlong Zhang, Bingbing Shi, Ruichao Guo, Junjian Zhang, Chenyu Wang, Shangbin Wang, Yuxuan Li, Zhaolin Li   +9 more
doaj   +1 more source

Technology and application of damage reduction mining and ecosystem restoration of open-pit coal mines in eastern grassland area

Meitan kexue jishu, 2023
The eastern grassland region is an important coal energy base in China, and coal development has made great contributions to the energy security supply of the northeast region and the economic development of China. In response to the problems of cold and
LI Quansheng, LI Lin
doaj   +1 more source

Research on Dominant Factors and Control Technologies for Instability in Cross-Mining Roadway

Eng
To investigate the dominant factors and instability mechanism of surrounding rock deformation in cross-mining roadways, a systematic study was conducted using theoretical analysis, numerical simulation, and response surface methodology to examine the ...
Hao Wang, Miao Chen, Jiangwei Liu, Peidong Li, Wenfei Wang, Xianghan Xu, Hui Zhou   +6 more
doaj   +1 more source

Engineering Biochar‐Derived Functional Materials for High‐Performance Supercapacitors: Design Principles, Mechanisms, and Scalable Strategies

Carbon Energy, EarlyView.
ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal, Avinash C. Mendhe, Mayna Roy, Neha S. Barse, Taejoon Park, Han‐Seung Lee, Haigun Lee   +6 more
wiley   +1 more source

Assessment of vibration exposure of mine machinery operators at three different open-pit coal mines

Journal of the Southern African Institute of Mining and Metallurgy, 2022
In almost all branches of industry, machinery and equipment in operation cause vibration. Some sources of vibration affect only the operator's hands, fingers, and arms, while others have adverse effects on the entire -body.
A. Tekin
semanticscholar   +1 more source