综放工作面控顶设计实例.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,陆菜平 博士 副教授,2010-3-23,综放工作面顶板控制设计实例,1,防漏,2,防压,2,防压,2,防压,2,防压,2,防压,2,防压,2,防压,2,防压,2,防压,2,防压,2,防压,2,防压,3,防推,3,防推,3,防推,3,防推,4,设计实例,4,设计实例,4,初放阶段,4,初放阶段,4,初放阶段,4,初放阶段,4,初放阶段,4,初放阶段,4,初放阶段,4,初放阶段,4,初放阶段,4,初放阶段,4,钻孔,-1,4,钻孔,-1,4,钻孔,-1,4,钻孔,-1,4,钻孔,-1,4,钻孔,-1,4,钻孔,-1,4,钻孔,-1,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,4,钻孔,-6,