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Kong, Dezhong

Pu, Shijiang

Zheng, Shangshang

Wang, Chunhua

Lou, Yahui

Funding for this research was provided by:

Scientific Research Foundation of Guizhou Provincial Department of science and technology and Guizhou University (QianKehe LH [2017]7280)

the annual academic training and special innovation program of Guizhou University in 2017 (Guizhou Kehe [2017]5788)

The Youth Science and Technology Talents Development Project of Guizhou Education Department (Guizhou Education Co-operation KY character [2018] 114)

the fund of Key Laboratory of Safety and High-efficiency Coal Mining, Ministry of Education (JYBSYS2017101)

The first class professional “mining project” in Guizhou province (SJZY2017006)

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