Research and application of dynamic sectionalized supporting in deep roadway under overhead mining
In this paper, the FLAC3D software was applied to analyze the dynamic sectionalized supporting technology and its application in deep roadway under overhead mining influenced by multi mining pressure.The conclusions are drawn as follows.The relative displacements between the roof, floor and ribs are affected apparently by the coal seam interval;The larger the coal seam interval is, the weaker the influence of dynamic pressure is, the smaller the deformation of surrounding rock and floor heave are, and the influence is increasing with the overlapping effects of the multi working faces mining;Plastic failure zones of surrounding rock are symmetrical distribution, and the plastic failure depth of roof is larger than that of floor;As the dynamic sectionalized supporting was adopted, the influences from different coal spacing are not significant,when mining at the same working face.Practice verified that dynamic sectionalized supporting can not only guarantee the stability of roadway, but also provide good supporting effect and greater economic benefit.
deep roadway under overhead mining varied interval dynamic sectionalized supporting numerical simulation engineering application
ZHANG Pei-sen HE Yong LIN Dong-cai WANG Hao
School of Mining and Safety, Shandong University of Science and Technology, Qingdao 266590, China;Ke Geting Coal Mine of Shandong Energy Zibo Mining Group Corporation ,Zibo 225000,China School of Mining and Safety, Shandong University of Science and Technology, Qingdao 266590, China;Ke
国际会议
International Mining Conference 2014(2014国际采矿论坛)
安徽淮南
英文
44-49
2014-09-19（万方平台首次上网日期，不代表论文的发表时间）