1) roof protection by cement bolts
水泥锚杆护顶
2) cement grouted rebar
水泥锚杆
3) rockbolting with cemented metal shore
水泥卷金属锚杆支护
4) Bolt and coble supporting roof
锚杆与锚索护顶
5) room-pillar with bolting
锚杆护顶房柱法
1.
Ground behaviour occured in mining of Maluping ore block by new room-pillar with bolting in Kaiyang Phosphate Mine are analyzed and control measures of ground pressure are put forward.
对开阳磷矿马路坪矿段延伸开采工程中采用新型锚杆护顶房柱法出现的地压显现问题进行了详细的分析 ,并提出了地压控制措施。
6) 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。
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