Yubing Liu

May 15, 2024 | pubs.acs.org | Yubing Liu |xun zhang |Jie Li |Ao Kou

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May 15, 2024 | dx.doi.org | Yubing Liu |xun zhang |Jie Li |Ao Kou

Mar 31, 2024 | mdpi.com | Yubing Liu |Jie Li |Jinxiong Cai |xun zhang

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Oct 11, 2023 | mdpi.com | Yubing Liu |Dong Zhao |Shan Yin |Li Zhang

1. IntroductionAs coal resources are gradually exhausted in shallow areas in China, deep underground coal mining operations will become more common. The number of 1000 m level depth underground coal mines in China has reached more than 50, with the deepest depth of 1510 m []. Severe dynamic disasters, e.g., gas outbursts, coal bursts, and coal–gas compound dynamic disasters, could occur more frequently when underground coal mines enter deep mining [,,,].

Sep 25, 2023 | mdpi.com | Yubing Liu |Dong Zhao |Li Zhang |Yiteng Li

4. Discussion 4.1. Validation of the Permeability ModelThe steps to determine the parameters of Chen’s model are as follows: Cf was fitted by Equation (1) using the data from the elastic compression stage to obtain the best fitting result; after the Cf was determined, the parameters α, β, and γ were fitted according to Equation (3) to obtain the best fitting value. We obtained parameters E, K, φ0, l, etc.