Therefore, designs reclaimable wedgebolt which can reduce the cost, avoid false construction and increase the recovery.
因此，设计了可回收楔式锚杆，降低了费用，避免了假性施工，提高了回收率。
2
The paper introduced the principle and methods of supporting combined the slit wedgebolt in small diameter with steel reinforcement in roadway with compound roof, and obtained economic effects.
介绍了回采巷道复合顶板条件下采用小直径管缝式锚杆加钢筋梯式组合网支护的原理、方法和取得的经济效果。
3
The authors described the structure of a newly - developed wedge-tube bolt, its reinforcement principles and anchoring performance, and the results of in situ pull test and productive applications.