1.Department of Resources and Civil Engineering,Shandong University of Science and Technology,Tai’an ,China; 2.National Engineering Lab of Backfilling Mining in Coal Mine,Shandong University of Science and Technology,Tai’an ,China; 3.Cultivation Base,Province and State Joint Key Lab of Mine Disaster Prevention and Control,Shandong University of Science and Technology, Qingdao ,China;4.Hubei Research Institute of Aerospace Chemical Technology,Xiangyang ,China