大同矿区采准巷道锚杆支护技术应用及改进

The Application and Improvement of the Bolt Support Technique in the Development Work Tunnel of Datong Mining Area

针对大同矿区采准巷道普遍使用的两种锚杆支护形式,以及在锚杆“三径”匹配、间排距布置、预应力确定等方面存在的问题,提出了相应的改进措施。

In the light of the two kinds of the bolt support forms commonly used in the development work tunnel of Datong Mining Area, this paper expounds the problems existing in aspects of the matching of the three diameters of the bolt, the arrangement of the space length, and the determination of the prestress, etc., and puts forward some corresponding improving measures.