1) slot-and-wedge fastening
楔缝式锚杆支护
2) slit rod-and-wedge-type bolt
楔缝式锚杆
3) wedge pipe bolt for roof support
楔管式锚杆护顶
1.
The employment of dip retreat and wedge pipe bolt for roof support showed that the permissible exposed area of mine goaf increased from 50m2 to 258-500m2, thus greatly reduced the ore loss and dilution.
本文以理论研究为基础,密切结合生产实际,采用沿倾斜后退式回采顺序和楔管式锚杆护顶技术,使采空区允许暴露面积只有50m~2左右,扩大到258～500m~2,大幅度地降低了矿石损失与贫化,获得显著的经济效益。
4) wedge bolt
楔式锚杆
1.
Therefore,designs reclaimable wedge bolt 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。
5) bolt support form
锚杆支护形式
1.
Based on the features of extraction roadway in fully-mechanized caving face,the influential factors such as intensity of surrounding rock, intensity of coal, mining depth, joint and crack of surrounding rock, influence of mining, top coal thickness,width of pillar and area of roadway section were defined in order to select optimally bolt support forms of the roadway.
根据综放回采巷道的特征,确定其锚杆支护形式优选需要考虑的因素为:围岩强度、煤层强度、巷道埋藏深度、围岩节理裂隙发育程度、采动影响、顶煤厚度、护巷煤柱宽度、巷道断面面积,这些因素和支护形式、支护参数一起对巷道围岩变形产生影响。
6) the mode of the bolt support
锚杆支护方式
补充资料：采用可拆卸预应力锚杆技术进行高层建筑基坑护坡
采用可拆卸预应力锚杆技术进行高层建筑基坑护坡
霹 采用可拆卸预应力锚杆技术进行高层建筑基坑护坡
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条