Results 31 to 40 of about 2,137,122 (310)

Mechanical Analysis of the Failure Characteristics of Stope Floor Induced by Mining and Confined Aquifer

Shock and Vibration, 2021
Mining above confined aquifer has become an important task for water inrush prevention in China. To study the failure characteristics of stope floor along the strike, a mechanical model under combined action of mining and confined aquifer was constructed,
Zhiguo Lu, Wenjun Ju, Xiwen Yin, Zhuoyue Sun, Fengda Zhang, Chujian Han   +5 more
doaj   +1 more source

Electro‐Organic Synthesis at a Stable Oil/Water/Solid Three‐Phase Interface Reactor

Angewandte Chemie, EarlyView.
A porous membrane electrode (PME) reactor is developed to promote oil/water/solid three‐phase interfacial contact for electro‐organic synthesis. By promoting the formation of an oil/water interfacial region within or near an amphiphilic catalytic layer, the reactor enables efficient conversion of water‐insoluble organic reactants in aqueous ...
Deyin Chen, Jianan Zhu, Huan Wu, Huajun Zheng, Longhao Jiao, Chengpu Chu, Yinghua Xu, Bin Liu   +7 more
wiley   +2 more sources

Characteristics and mechanism of strong dynamic load mine pressure in large mining height full-mechanized caving face with multiple thick and hard roof

Meitan xuebao
In view of the problems of strong mine pressure such as rapid shrinkage of hydraulic support column and easy support crushing in working face under the fully mechanized caving face with large mining height in multi-layer thick and hard roof of extra ...
Zhen ZHANG, Zhizeng HUANG, GANG XU, Xiaogang LIU, Qianjin LIU, Tielin ZHAO, Xingyu LIN   +6 more
doaj   +1 more source

Valuing the Non-Market Impacts of Underground Coal Mining [PDF]

This paper has been published in a peer-reviewed journal as: Gillespie, R. & M. E. Kragt (2012). "Accounting for nonmarket impacts in a benefit-cost analysis of underground coal mining in New South Wales, Australia." Journal of Benefit-Cost Analysis 3(2):
Gillespie, Robert, Kragt, Marit Ellen
core   +1 more source

In Situ Testing of Rock Burst Damage to Roadway Wall Rock and Support System

Shock and Vibration
Rock burst hazards are a common occurrence during deep coal mining, resulting in the collapse of roadway wall rock and the failure of support structures.
Yukai Fu, Sifeng He, Penghe Zhou, Jiankang Jiao, Junchen Li, Zhuoyue Sun, Jie He   +6 more
doaj   +1 more source

Study on working resistance distribution of support and resistance increasing characteristics of support partition in longwall face with ultra-large length

Meitan kexue jishu, 2023
The effect of the increase of inclined length of fully mechanized mining face on roof breaking and stress evolution is complex, which leads to regional differences in the support characteristics of support in mining face.
Xingyu LIN, Gang XU, Xiaojin GAO, Zhen ZHANG, Qianjin LIU   +4 more
doaj   +1 more source

Development Status of Coal Mining in China

Journal of the Southern African Institute of Mining and Metallurgy, 2021
As a controllable active resource in China, coal mining is facing the transition from output to quality. Base d on the total mining production and average capacity, the current situation and level of coal mining at three scales of mine, city and ...
Xin-Jie Liu, Liang-Hui Li, Yingming Yang
semanticscholar   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

Advanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais, S. Peng, J. Chang, F. Li, Q. Zhu, K. Yuan, G. Hugelius, H. Li, Y. Cai, F. Chevallier, K. Tibrewal, E. A. Kort, K. Arndt, J. Watts, B. Buma, N. Besic, P. I. Palmer, H. Cadillo‐Quiroz, E. Euskirchen, M. J. Gondwe, A. Hoyt, R. Jackson, S. Malone, D. Monteverde, S. Natali, M. Ramonet, C. Rey‐Sanchez, L. B. Sagang, E. A. G. Schuur, R. Vargas, R. Varner, Z. Zhang, B. Poulter   +32 more
wiley   +1 more source

An Enhanced Security Autonomous Control System for Unmanned Rubber-Tired Vehicles Operating in Underground Mines

Journal of Advanced Transportation
The operating environment in underground mines is complex and fraught with various hazards that pose severe risks to miners’ safety. As an essential auxiliary transportation device in mines, the operational safety and reliability of rubber-tired vehicles
Zhen Tan, Changzhong Ren, Yongjun Gao, Liang Gao, Baorui Jia, Yuan Nie, Ming Du, Ziyan Ma   +7 more
doaj   +1 more source

Effects of surface coal mining and land reclamation on soil properties: A review

Earth-Science Reviews, 2019
Opencast coal mining has a series of consequences on land resources and places enormous pressure on the ecological environment. Stripping, excavation, transportation and dumping have different effects on soil physical, chemical and biological properties.
Yu Feng, Jin-Man Wang, Zhong-Ke Bai, L. Reading   +3 more
semanticscholar   +1 more source