“两软一硬”不稳定煤层综放开采技术研究与应用

doi:10.19286/j.cnki.cci.2023.08.003

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Abstract In order to study the applicability of comprehensive caving mine technology in ‘two soft and one hard’ unstable coal seams, Yunmei No.2 Mine was taken as an example, numerical simulation was conducted on the movement law of the overlying strata and the stress distribution law of the surrounding rock in the stope after mining, and the working resistance of the hydraulic support in the stope and the advance support pressure of the mining roadway were monitored. The numerical simulation results were consistent with the observation data of the mine pressure, indicating that the periodic weighting of the main roof was significant, with a weighting step distance of about 17 ~ 20 m, The influence range of advanced bearing pressure was 0 ~ 39 m. The safe and efficient implementation of comprehensive mining technology in ‘two soft and one hard’ unstable coal seams had produced significant economic and social benefits.

Key words： ‘two soft and one hard’ unstable coal seam comprehensive caving mine numerical simulation mine pressure behavior

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	Articles by authors
	Hua Huaitian1
	Zhang Bo2

Cite this article:

Hua Huaitian1,Zhang Bo2. Research and application of comprehensive caving mine technology in ‘two soft and one hard’ unstable coal seams [J]. CCI, 2023, 46(8): 10-14.

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http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2023.08.003 OR http://www.mtyhg.com.cn/EN/Y2023/V46/I8/10

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