A theoretical goaf resistance model based on gas production analysis in goaf gas drainage [PDF]
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.
Joung Oh, Guangyao Si, Bharath Belle
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Proactive goaf inertisation for controlling longwall goaf heatings [PDF]
Procedia Earth and Planetary Science, 2009 Deep oxygen ingress into the goaf can lead to spontaneous heatings particularly during face stoppage or slow face retreat in the panel. This requires the deployment of proactive goaf inertisation strategies based upon detailed understanding of goaf gas ...
Rao Balusu
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Influence of Goaf on Stability of Transmission Line Tower Foundation [PDF]
E3S Web of Conferences, 2022 There are various rock mass structures in the overlying strata of the goaf, such as cavities, cracks and separation layers. The phenomenon of under compaction with these structures still exists. Under the action of various natural forces, loads and other
Zhang Siyuan +3 more
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Three-dimensional Technical Observation Device for Super Large Area Upper and Lower Composite Goaf
Meikuang Anquan, 2020 In view of the shortcomings of the traditional observation methods for the super large area goaf, especially the upper and lower composite goaf, we developed a stereoscopic technology observation device for the super large area upper and lower composite
TAO Zhiyong, LI Bin
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Comprehensive Evaluation and Decision for Goaf Based on Fuzzy Theory in Underground Metal Mine
Advances in Civil Engineering, 2022 In underground metal mines, goaf brings huge safety risks. It is an important part of mine to evaluate goaf stability and determine the best goaf handling measures.
Rongxing He +5 more
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Underground Goaf Parameters Estimation by Cross-Iteration with InSAR Measurements
Remote Sensing, 2021 Determining the geographic location and spatial distribution of underground goaf is of great significance for the prevention of mining subsidence hazards and the detection of illegal mining.
Weihao Zhang +4 more
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Study on Application of Goaf Management and Residual Mining Technology in Niujuan Deposit [PDF]
E3S Web of Conferences, 2020 For goaf group and high grade embedded residual ore in NO.I ore body, the overall technical idea of pre-filling the key goaf, the residual mining and the non-key goaf filling is used.
Feng Pan-xue, Huang Dan
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Goaf gas flow modelling in 6km long longwall panel [PDF]
Podzemni Radovi, 2017 Understanding the goaf gas distribution in the start-up areas and in 6km long retreat panel is critical for developing gas management and spontaneous combustion (sponcom) control strategies.
Tanguturi Krishna +2 more
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Impact of goaf gas drainage from surface vertical boreholes on goaf explosive gas zones
International Journal of Coal GeologyDATA AVAILABILITY : Data will be made available on request.Goaf gas drainage is extensively employed in Australian gassy underground coal mines to manage safety and productivity and to mitigate gas emissions. As mining operations reach greater depths and
Joung Oh, Guangyao Si, Bharath Belle
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Safe and Efficient Coal Mining Below the Goaf: A Case Study
Energies, 2020 Mining at the fully mechanized working face below the goaf of the short-distance coal seam is influenced by the upper goaf. To address this problem, methods such as theoretical analyses, numerical simulation, and on-site measurement are used to study the
Weidong Pan, Shaopeng Zhang, Yi Liu
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