Results 1 to 10 of about 72,267 (298)

Research on production capacity planning method of open-pit coal mine. [PDF]

Sci Rep, 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
Liu G, Guo W, Chai S, Li J.
europepmc   +4 more sources

Optimization study on transverse mining zoning during the capacity expansion stage of nearly horizontal open-pit coal mines [PDF]

Scientific Reports
To address key challenges during the capacity expansion of the Baoqing Chaoyang Open-Pit Coal Mine from 7 to 11 Mt/a—such as insufficient working-line length, excessive advancing intensity, poor coordination between mining zones, elevated internal dump ...
Yu Wen, Ziling Song, Qianjun Su, Zhongwei Liu, Changshuai Wu, Long Zhang   +5 more
doaj   +2 more sources

Blasting ore size detection based on efficient dehazing network and multi-dimensional feature fusion [PDF]

Scientific Reports
Ore particle size distribution is an important metric for evaluating blasting outcomes and affects the energy consumption of ore crushing equipment. Faced with dense accumulation of ore, nonuniform size distributions, dust occlusion, and target loss due ...
Pingfeng Li, Shoudong Xie, Wanzhong Zhang, Deming Chen, Sheng Peng, Weibin Fang, Dehao Zeng   +6 more
doaj   +2 more sources

Effect of Coalbed Methane Well Fracturing on Slope Stability of Open-Pit Coal Mine: A Case Study of Shengli East No. 2 Open-Pit Coal Mine [PDF]

Advances in Civil Engineering, 2020
The impact of hydraulic fracture from CBM well fracturing on slope stability of the Shengli East No. 2 open-pit coal mine is analyzed by numerical simulation and limit equilibrium methods.
Qingzhong Zhu, Bo Wang, Xin Zhao, Chunchun Liu, Qing Yu, Liwen Zhang, Tao Hou, Guangjie Sang   +7 more
doaj   +2 more sources

Analysis of the impact of rock joint cracks on blastability of burnt rock in Xinjiang open pit coal mines [PDF]

Scientific Reports
In response to the problems of developed rock fractures and unsatisfactory bench blasting effects in open-pit coal mines in Xinjiang, China, By using on-site research, theoretical analysis, numerical simulation and other methods, the main influencing ...
Ziling Song, Yu Wen, Zhengzhao Jia
doaj   +2 more sources

Investigation on flow field characteristics in an open-pit coal mine [PDF]

Environmental Science and Pollution Research, 2021
Abstract In this paper, the atmospheric flow field characteristics in a deep open-pit mine are investigated numerically and theoretically. A theoretical model on the recirculation length based on the energy equation is used, a total variation diminishing (TVD) difference scheme with second order accuracy is used to solve the NS equations with a
Wanjun, Tang, Fengming, Li, Gaoxiang, Xiang, Mengwei, Liu   +3 more
openaire   +2 more sources

Platform Design and Key Technology Application of Autonomous Haulage System in Open-pit Coal Mines

Kongzhi Yu Xinxi Jishu, 2022
In view of the problems of high-cost, high-risk and low efficiency existing in the transportation system of open-pit coal mines, this paper puts forward a platform construction idea of deep integration of information technology and mining technology, and
HE Aiping
doaj   +3 more sources

Ground deformation monitoring of open-pit coal mine based on SBAS-InSAR and offset tracking techniques

Meikuang Anquan, 2022
Using SBAS-InSAR based on StaMPS and taking Antaibao Open-pit Coal Mine as research area, this paper carries out time series interferometry processing on 33 sentinel ascending and descending images, extracts ground deformation information of open pit ...
SUN Jun, ZHANG Jin
doaj   +1 more source

Research Progress on Extraction Technology of Rare Earth Elementsfrom Coal Ash

Kuangchan zonghe liyong, 2023
This is an essay in the field of mining engineering. High-value utilization of rare earths in fly ash can effectively alleviate the environmental pollution caused by fly ash in my country, expand the supply chain of rare earth raw materials, and ensure ...
Zhijuan Gao, Xiangren Wang
doaj   +1 more source

Research on unmanned driving system of mine-used truck

Gong-kuang zidonghua, 2021
With the deep exploration of large open-pit coal mines, the phenomenon of steep slopes and many bends has gradually increased. Moreover, the mine-used truck driving is difficult and there are hidden safety hazards.
YAN Ling1, HUANG Jiade2
doaj   +1 more source