【摘要】 提出了矿井开采由浅到深,地质构造变化越来越复杂,矿山压力显著增大,使巷道维护变得异常困难。阐述了巷道开掘以后,两帮与顶底板的应力变化,巷道支护的支架位置,延伸水平采准巷道的特点。介绍了锚杆支护在井下采准巷道应用的成功实例,指出了在采准巷道中采用锚杆支护是行之有效的,具有经济、有效、实用、快捷的效果,能取得诸多良好的经济效益。更多还原

【Abstract】 With digging depth increasing,the geological structure becomes more complex and pressure greater,which makes the maintenance of roadways more difficult.The paper explains the stress changes in sides,roof and floor of roadways,the location of roadway supports and the features of extending preparation roadways.The paper introduces a successful case about bolt supporting in preparation roadways and points out that the use of bolt supporting is effective,useful,which can bring a good economic benefit.更多还原