The requisition relates to an all set anchor pole for supporting tunnel, composed of a pole body, a supporting board, a head wedge, an anchor head with a denticle and a cement cartridge bag.
本申请是一种用于巷道支护的配套锚杆。由杆体，托板，顶头楔，带有小齿的锚头以及水泥药包组成。
2
There is much prestressing loss for friction resistance among wedge, steel strand and anchor-ring in engineering.