论文部分内容阅读
本文结合实例介绍了喷锚喷——锚网喷二次支护工艺,对支护机理进行研究探讨,提出了初次支护的锚杆间排距及二次支护滞后距离两个重要参数,并通过巷道矿压观测研究确定的工艺方法。文章指出初次支护中锚杆间排距是体现安全与效益的基础,二次支护要避开掘进影响期进行,以确保施工安全、快速、经济合理,提高支护效果。
In this paper, an example is given to describe the secondary support technology of spray-grouting shotcrete-anchor net spray. The support mechanism is discussed and the two important parameters of the first support such as the distance between anchors and the secondary support lag distance are proposed. And through the roadway pressure observation study to determine the process. The article points out that the first row of support between the bolt spacing is to reflect the safety and effectiveness of the foundation, secondary support to avoid the impact of excavation carried out to ensure safe, fast construction, economic and reasonable, to improve the support effect.