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Aug 14, 2019 · However, permeability is a critical factor controlling degasification and coalbed methane production. 1 According to the safety operation specifications of China, the coal seam will be defined as outburst‐prone coal while the methane concentration of coal seam exceeds 8 m 3 /t, and the methane pressure exceeds 0.74 MPa.

Author: Chang‐guo Huang, Yue‐bing Zhang, Jiang‐fu He, Yongjiang Luo, Zhong‐guang Sun

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Taiyuan, China, is one of the most resource-consuming coal cities, facing serious eco-environmental issues [10–19]. How to find sustainable and eco-environmental coal mining methodology is the challenge. Currently, the fully mechanized coal mining face, when exploited, gradually enters the mining roadway of the goaf.

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Aug 20, 2019 · The layout and location of the designed gas drainage boreholes have a huge influence on the performance of coal and gas extraction. The Shaqu coal mine exploits the #2 and #4 coal seams, which are gas burst-prone coal seams with low concentration of drained gas.

1. Introduction and Background

Coal is still of crucial significance for the economic development in domestic China. However, lots of coal mines in China are suffering various groundwater disasters during coal production [1], which is prone to be worse at greater mining depths due to the influence of high ground stress and high water pressure [2].

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Gas Prevention and Control of Protective Seam Working …

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The Static Breaking Technique for Sustainable and Eco ...

Taiyuan, China, is one of the most resource-consuming coal cities, facing serious eco-environmental issues [10–19]. How to find sustainable and eco-environmental coal mining methodology is the challenge. Currently, the fully mechanized coal mining face, when exploited, gradually enters the mining roadway of the goaf.

Published in: The Scientific World Journal · 2014Authors: Hao Bingyuan · Huang Hui · Feng Zijun · Wang KaiAbout: Acoustics · Indentation hardness · Renewable energy · Coal mining

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