地 层 情 况
地点（省）:广东
地点（市）:广州
钻机型号: MXL-150D型锚固钻机
钻具配置: 146套管＋76钻杆
工艺类型:基坑斜锚
施工工艺:普通锚索
地层情况: 0-20米泥层，20-32米沙层，32-35米中风化岩层
施工角度（°）:25
孔径（mm):150
孔深（m):35
施工效率（min):70
纯钻进时间（min):40
纯拆卸钻具时间（min):20
施 工 工 艺
1、钻机移机到孔位，调整好角度，将支腿支撑到地面，确保钻进过程不发生位移；
2、安装套管和套管钻头，启动水泵，钻孔至中风化岩面；
3、安装钻杆、潜孔冲击器、锤头，潜孔锤钻至要求孔深后，拆拔出钻杆；
4、将制作好的锚索放入套管内；
5、先进行管内注浆，当孔口完全返出水泥浆后，停止注浆，待水泥浆初凝后，再进行二次注浆。
——安曼钻机售服：王其龙
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