[1]State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[2]School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[1]State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[2]School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[1]State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[2]School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[1]State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[2]School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[1]State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;
[2]School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;
Deep roadways; Bolt support quality; Random nondestructive testing; Surrounding rock stability; Prediction and pre-warning;