Results 211 to 220 of about 1,733 (262)

Analysis and control of gas blowout accidents in working faces beneath thick magmatic rock. [PDF]

Sci Rep
Ma S, Su Y, Wang X, Guo B, Zhang S, Li H.   +5 more
europepmc   +1 more source

A new determination method of hydraulic support resistance in deep coal pillar working face. [PDF]

Sci Rep
Li GD, Li XL, Huan HH, Lin HX, Ren ZY, Ren H.   +5 more
europepmc   +1 more source

Numerical simulation study on the mining pressure law and collaborative failure of soft-hard interlayer working face. [PDF]

Sci Rep
Hou Z, Li H, Liu G, Xie K, Wu P, Yang Z.
europepmc   +1 more source

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Caving mechanisms of loose top-coal in longwall top-coal caving mining method

International Journal of Rock Mechanics and Mining Sciences, 2014
Abstract The top-coal caving mining method, developed steadily in the past two decades, has become the main method for thick seam coal mining in China. In recent years, the core research areas in the top-coal caving mining are the mechanisms of top-coal caving and the improvement of top-coal recovery ratio.
Jiachen Wang, Shengli Yang, Yang Li, Like Wei, Haohao Liu   +4 more
openaire   +3 more sources

Cave detection using multiple geophysical methods: Unicorn cave, Harz Mountains, Germany

GEOPHYSICS, 2011
Unicorn cave in the southern Harz Mountains of Germany is a show cave in dolomitic rocks of the Zechstein Formation. The cave’s trunk passage is interrupted by larger rooms. The overburden is only around 15 m. The passages are filled with sediments that can be up to 50 m thick.
Georg Kaufmann, Douchko Romanov, Ralf Nielbock   +2 more
openaire   +1 more source

Longwall and caving mining methods

1985
The essential geomechanical features of longwall and caving methods of mining were outlined in Chapter 12. Longwall and caving methods are distinguished from other mining methods by the fact that the near-field rock undergoes large displacements so that mined voids become self-filling.
B.H.G. Brady, E.T. Brown
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Comparison of 222Rn measurement methods in caves

2021
<p>Radon (222Rn) is a naturally inert radioactive gas, originating from the radioactive decay of 226Ra in the 238U radioactive decay chain. 222Rn has a variety of geoscientific applications. 222Rn, however, represents the most significant source of ionizing radiation exposure and can be critical in underground working and living spaces ...
Sara Gil-Oncina, Concepción Pla, Javier Valdes-Abellan, Noé Garcia-Martinez, David Benavente   +4 more
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A virtual environment making method for CAVE system

2020 International Conference on Computing and Data Science (CDS), 2020
CAVE immersive system is a large VR system with high immersion and good interaction means. CAVE can integrate vision, touch, sound, etc., and is widely used in architecture display, equipment structure research, simulation training, scientific research and other fields with high requirements for space sense and visual effect. According to the structure
Liguo Zheng, Meili Zhu, Hongwei Yu
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Recreation Valuation of Caving Using Travel Cost Method in Capisaan Cave System, Nueva Vizcaya, Philippines

Philippine Journal of Science, 2022
The value of recreation services generated by the caving activity in Capisaan Cave System (CCS) in Kasibu Nueva Vizcaya was estimated using the zonal travel cost method, a revealed preference valuation technique. Data were collected through on-site and online visitor surveys with a total of 429 respondents.
Jayson Caranza, Margaret Calderon
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