Results 161 to 170 of about 359,370 (309)

Coal Mining [PDF]

, 2020
openaire   +1 more source

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

Research on the impact of ground subsidence of varying degrees caused by underground coal mining on soil erodibility. [PDF]

Sci Rep
Tian H, Zhang A, Sui W, Shi G, Zhang Z, Yang D, Qiao Q.   +6 more
europepmc   +1 more source

Stability Evaluation and Parametric Optimization of Coal‐Concrete Composite Bearing Systems Under Mine‐Water‐Induced Deterioration: Experiments and FEINN Analysis

Energy Science &Engineering, EarlyView.
Mine‐water immersion tests reveal pronounced coal weakening (vs. minor concrete degradation), identifying coal pillars as the stability‐limiting component in composite dams. A coupled FEINN framework quantifies extreme‐pressure stability and ranks multi‐parameter designs via a normalized multi‐indicator scheme, enabling optimized dam configuration for ...
He Wen, Hongchuan Dai, Guixin Zhang, Pengzhe Li, Tong Yang, Cang Gong, Renbo Gao   +6 more
wiley   +1 more source

Assessment of water quality in moatize, mozambique: possible human health risks from coal mining and use. [PDF]

Environ Geochem Health
Cossa MAJC, Mouri H, Finkelman RB, Manjate VA, Dowling K.   +4 more
europepmc   +1 more source

Analysis and Optimization of Early‐Warning Indicators for Impact Critical Stress in Deep Soft Coal Seams

Energy Science &Engineering, EarlyView.
This study determines the impact critical stress early‐warning indicators for deep soft coal seams: 18 MPa (shallow holes), 20 MPa (deep holes), and 3 MPa/d daily stress change rate, via theoretical, experimental and simulation methods. ABSTRACT The accurate determination of early‐warning indicators for critical impact stress in deep soft coal seams is
Haichen Yin, Xiufeng Zhang, Atao Li, Yanliang Wang, Long Yuan, Chaohong Shi, Yang Chen, Caiping Lu, Liangjin Jiang   +8 more
wiley   +1 more source

Experimental and Numerical Investigation of Cedar Façade Flame Spread With Respect to Sidewall

Fire and Materials, EarlyView.
ABSTRACT In response to growing energy conservation and carbon neutrality efforts, façade systems incorporating wooden materials have attracted increasing attention, which in turn raises concerns about their combustibility. This study presents a combined experimental and numerical investigation of flame spread along cedar façades.
Xukun Sun, Hideki Yoshioka, Takafumi Noguchi, Yuhei Nishio, Manabu Kanematsu, Biao Zhou, Mingwei Xu   +6 more
wiley   +1 more source

Study on the influencing factors of photovoltaic siting in coal mining subsidence areas-taking Shanxi Province as an example. [PDF]

Sci Rep
Lu Y, Yan Y, Wang M, Zhou L.
europepmc   +1 more source

NORTH DAKOTA LIGNITE ENERGY INDUSTRY'S CONTRIBUTION TO THE STATE ECONOMY FOR 2003 AND PROJECTED FOR 2004 [PDF]

This report provides estimates of the lignite industry's contribution to the North Dakota economy, using key economic indicators such as retail trade activity, personal income, total business activity, employment, and tax revenues.
Coon, Randal C., Leistritz, F. Larry
core   +1 more source

Full Science, Technology, Engineering, Arts and Mathematics Ahead: Leveraging Immersive Virtual Reality to Create Equitable and Transformative Learning Experiences

Future in Educational Research, EarlyView.
ABSTRACT Immersive virtual reality (IVR) is widely promoted as a means of enriching learning in science, technology, engineering, arts and mathematics (STEAM), yet evidence of its capacity to foster equitable classroom experiences for marginalised groups remains limited, particularly outside traditional STEM domains.
Carly Waterhouse‐Boot, Fiona Steel‐Hughes   +1 more
wiley   +1 more source