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Sustainability 2017, 9(6), 1015; doi:10.3390/su9061015

A Novel Method for Selecting Protective Seam against Coal and Gas Outburst: A Case Study of Wangjiazhai Coal Mine in China

1,2,* and 3,4
1
School of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
2
Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi’an 710054, China
3
China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400037, China
4
National Key Laboratory of Gas Disaster Monitoring, Preventing and Emergency Controlling, Chongqing 400037, China
*
Author to whom correspondence should be addressed.
Received: 30 March 2017 / Revised: 5 June 2017 / Accepted: 7 June 2017 / Published: 13 June 2017
(This article belongs to the Special Issue Energy Security and Sustainability)
View Full-Text   |   Download PDF [1595 KB, uploaded 13 June 2017]   |  

Abstract

Protective seam mining is a major and critical regional measure to prevent coal and gas outbursts (CGO) in coal mines. In this study, a novel method for selecting protective seam against coal and gas outburst was studied on the basis of gas geology and rock strata control theories and principles for protective seam mining and relevant regulations, which is that theories of gas geology were used to assess the outburst risk inherent in different seams of this mine, and then make preliminary selection of protective seams, and the technical feasibility of the proposed selection method was then analyzed using the theories and principles for protective seam mining and relevant regulations. The case application study results show that the extraction of the upper protective seam (UPS) caused significant decreases in the predicative indicators of outburst risk in the outburst-prone seam and thereby prevented CGO, and the novel method can provide a theoretical basis for selecting protective seam against CGO. View Full-Text
Keywords: coal and gas outburst; protective seam; novel selection method; low permeability; effectiveness in preventing outbursts coal and gas outburst; protective seam; novel selection method; low permeability; effectiveness in preventing outbursts
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Guowei, D.; Yinhui, Z. A Novel Method for Selecting Protective Seam against Coal and Gas Outburst: A Case Study of Wangjiazhai Coal Mine in China. Sustainability 2017, 9, 1015.

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