Results 21 to 30 of about 46,400 (239)

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

open access: yesMeikuang 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

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

open access: yesVestnik 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

Geopolymer-based modification of blasting sealing materials and optimization of blasting block size in coal seams of open pit mines

open access: yesInternational Journal of Mining Science and Technology, 2023
This research proposes the utilization of a geopolymer-based blasting sealing material to improve the profitability of coal sales and reduce the rate of coal fragmentation during blasting in open pit mines.
Xiaohua Ding   +7 more
doaj   +1 more source

Research on production capacity planning method of open-pit coal mine

open access: yesScientific Reports, 2023
Abstract Reasonable production capacity is related to the economic benefits of an open-pit coal mine. This study analyzes the relationship between the working face length, the annual advancing speed and the production capacity. It constructs a production capacity function relationship model. Take the Baorixile open-pit coal mine as an
Guangwei Liu   +3 more
openaire   +3 more sources

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

open access: yesMeitan 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

Unravelling the relative contributions of climate change and ground disturbance to subsurface temperature perturbations: Case studies from Tyneside, UK [PDF]

open access: yes, 2016
When assessing subsurface urban heat islands (UHIs) it is important to distinguish between localized effects of land-use change and the impacts of global climate change. However, few investigations have successfully unraveled the two influences.
Westaway, Rob, Younger, Paul L.
core   +1 more source

Evaluation of Restoration of Damaged Ecosystems on Soil Nematode Communities and Their Functions in the Desert Steppe Open-Pit Mining Area of Inner Mongolia [PDF]

open access: yes, 2023
In view of the general lack of analysis of the ecological restoration effects of underground soil in the desert grassland ecological restoration projects in Inner Mongolia, this study selected the most representative open-pit quarries, open-pit iron ...
Gao, Zhiwei W., Han, G. D., Zhang, G. G.
core   +1 more source

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

open access: yesUnconventional 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   +9 more
doaj   +1 more source

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

open access: yesMeitan 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

Research on intelligent evaluation system of open-pit mine

open access: yesMeikuang Anquan, 2022
In view of the lack of unified standards for the intelligent evaluation system of open-pit mines in our country, the lack of construction basis, evaluation criteria and other key issues in the construction process, research on the intelligent evaluation
GUO Yingjie
doaj   +1 more source

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