Zhijun Xu

Dec 6, 2024 | mdpi.com | Yue Cao |Zhijun Xu |Lianhai Tai |Zheng Kong

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Jun 3, 2024 | mdpi.com | Lei Sun |Chong Li |Zhijun Xu |Lianhai Tai

1. IntroductionDue to old age and lack of maintenance, the roadway’s surrounding rock deformation and damage are serious. During the mining period—especially in the vertical distribution with the working face towards the abandoned roadway—the surrounding rock of the abandoned roadway has difficulty withstanding the influence of the working face over the front support pressure and the phenomenon of roof fracture, which are two types of instability.

Dec 13, 2023 | mdpi.com | Lei Sun |Chong Li |Zhijun Xu |Lianhai Tai

1. IntroductionChina possesses substantial coal reserves and has traditionally relied on coal as its main energy source. The progress of the coal industry is crucial for the nation’s economic growth [1,2]. Nevertheless, the coal industry faces a range of obstacles, including water, fire, gas, and roof collapses during mining, limiting its development.

Oct 13, 2023 | mdpi.com | Zhijun Xu |Yue Cao |Chong Li |Lianhai Tai

This is an early access version, the complete PDF, HTML, and XML versions will be available soon. Open AccessArticleby 1, 1, 1,*, 1 and 2 1School of Mining Engineering, China University of Mining and Technology, Xuzhou 221116, China2Coal Mining and Designing Branch, China Coal Research Institute, Coal Mining Research Institute, Beijing 100013, China*Author to whom correspondence should be addressed. Appl. Sci.

Sep 20, 2023 | mdpi.com | Zhijun Xu |Chong Li |Yue Cao |Lianhai Tai

This is an early access version, the complete PDF, HTML, and XML versions will be available soon. Open AccessArticleby, *, , and State Key Laboratory of Coal Resources and Safe Mining, School of Mining Engineering, China University of Mining and Technology, Xuzhou 221116, China*Author to whom correspondence should be addressed. Appl. Sci.