Study on the Reasons and Prevention Technology of Abnormal Methane Emission in Fracture Development Region in Limestone

Abstract:

Analysis and research on the reasons for abnormal methane emission in local coal seams were given through Gas-geology Theories in this article, considering the practical conditions in Yitang Mine and the current situation that low gas emission while frequent occurrence of disastrous gas accidents in some mines. Geological tectonism was mainly responsible for the mass storage of free form gas in fracture, for it crushed and broke the original reservoir and contributed to fracture development in roof limestone. The centralized release of free form gas caused abnormal methane emission in local when these fractures were disturbed by mining activities. Hereby, feasible measures for gas prevention were taken to ensure safety production. The results had provided constructive guidance for gas prevention and control in similar coal seams or mines.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 3359-3363
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.3359
• Online since: February 2013
• Authors: Jun Wei Yuan, Kai Wang, Xiao Gai Jiang
• Keywords: Abnormal Methane Emission, Comprehensive Prevention, Gassy Mine, Geological Tectonism, Roof Limestone

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