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CFD Simulation Study on Nitrogen Injection to Suppress Coal Spontaneous Combustion in Goaf under Downward-Ventilation Conditions. [PDF]

ACS Omega
Wang J, Liu X.
europepmc   +1 more source

Reasonable drilling angle and technology application for pre-cracking thick-hard roofs before driving gob-side roadways in ultra-thick seams. [PDF]

Sci Rep
He F, Wu Y, Wang D, Zhang J, Tao K.
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A theoretical goaf resistance model based on gas production analysis in goaf gas drainage

International Journal of Coal Geology, 2022
DATA AVAILABILITY : Data will be made available on request. ; Over the past few years, the Australian coal mines heavily relied on drilling vertical goafholes to capture coal mine methane and monitor methane levels, which is named goaf gas drainage. The suction pressure applied on the surface goafholes may change goaf pressure distribution and goaf gas
Wang, Yuehan, Si, Guangyao, Xiang, Zizhuo, Oh, Joung, Belle, Bharath K., Webb, David   +5 more
openaire   +2 more sources

Goaf filling with industrial wastes

Journal of Mining Science, 2004
Characteristics are presented for industrial wastes utilized for production of hardening stowing in underground mines in the Uzbekistan Republic. The efficiency of their use as a substitute of cement is proved.
Yu. A. Gaziev, Kh. A. Rizaev
openaire   +1 more source

Fundamental understanding of goaf gas displacement in longwall goaf

2015
Fundamental understanding of the goaf gas distribution in a gassy coal mine is necessary for developing effective goaf gas drainage strategies in the longwall coal mine. The goaf gas was subjected to the surface and body forces that were classified depending upon whether they acted on the surface area or the volume of the gas element.
Tanguturi, K., Balusu, R.
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Application of TEM in Goaf Exploration

Applied Mechanics and Materials, 2012
The basic principle of transient electromagnetic method (TEM) is introduced in this paper, and it was used to explore position of the goaf which existed under Fushun east open-pit mining slope systematically. Inversion based on results of the exploration determines the location of dangerous abnormal area, provides a theory support for next exploration ...
Shao Jie Feng, Shi Guo Sun, Wen Bo Liu
openaire   +1 more source

3D model reconstruction of underground goaf

SPIE Proceedings, 2005
Constructing 3D model of underground goaf, we can control the process of mining better and arrange mining work reasonably. However, the shape of goaf and the laneway among goafs are very irregular, which produce great difficulties in data-acquiring and 3D model reconstruction.
Yuanmin Fang, Xiaoqing Zuo, Baoxuan Jin
openaire   +1 more source

Simulation on Spontaneous Combustion in Mining Goaf

2010 Asia-Pacific Power and Energy Engineering Conference, 2010
Through dimensionless analysis on effect factors of spontaneous combustion in goaf, this paper establishes a coupling mathematical model including skeleton temperature field, air temperature field, velocity field and oxygen concentration field to reveal the characteristics of spontaneous combustion.
Yuehong Wang, Yueping Qin, Yuanwei Ding, Chuan Qin   +3 more
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Evaluation of Grouting Effect Detection in Goaf

Applied Mechanics and Materials, 2013
The paper mainly introduces the problem of grouting reinforcement of buildings over the old goaf, and presents to the positioning of grouting reinforcement technology in the goaf. Combined with engineering example, the paper discusses the grouting filling method to strengthening governance goaf.
Hui Ren Bai, Jing Jing Li
openaire   +1 more source