基金Projects(51674115, 51804113) supported by the National Natural Science Foundation of ChinaProject(17B095) supported by the Excellent Youth Subsidy Project of Hunan Provincial Department of Education, China.
基金This work was financially supported by the National Natural Science Foundation of China （Nos. 51474188, 51074140, and 51774112）, the Natural Science Foundation of Hebei Province of China （No. E201420B012）, the International Cooperation Project of Henan Science and Technology Department （No. 182102410060）, International Cooperative Talent Project of Henan Province （No. 2016GH22）, the Doctoral Fund of Henan Polytechnic University of China （No. B2015-67）, the Research Fund of State and Local Joint Engineering Laboratory for Gas Drainage ＆ Ground Control of Deep Mines （Henan Polytechnic University） of China （No. G201614）, and Taihang Scholars Program. All these are gratefully appreciated.