Anchor cable construction method used in support engineering

The invention provides an anchor cable construction method used in support engineering, and belongs to foundation pit support engineering. The method comprises the procedures of primary drilling, primary jet grouting, secondary drilling and grouting, anchor cable installation and grouting. In the primary jet grouting procedure, a grouting drill bit is put into a grouting hole with a pore-forming sleeve, cement slurry is sprayed out by the grouting drill bit and is impacted and fused with a stratum on the hole wall of the grouting hole, and a grouting body with the diameter larger than that ofthe grouting hole is formed. The problems that the slurry is lost in hollow geologies, accordingly the slurry overflow state cannot be reached no matter how long the grouting time is, a lot of the slurry is wasted and engineering lag is caused are solved. 本发明提供了一种支护工程中的锚索施工方法，属于一种基坑支护工程，其包括一次钻孔、一次旋喷注浆、二次钻孔和注浆、锚索安装和注浆的工序；所述一次旋喷注浆工序是在设置有成孔套筒的注浆孔内，下放注浆钻头，利用注浆钻头将水泥浆喷出并与注浆孔孔壁的地层撞击和融合，形成直径大于注浆孔的注浆体；解决了浆液会在空洞地质中发生流失，使得即使注浆时间再长也无