为了提高设备利用率以及满足现场施工需求,对功能单一的GSD-Ⅱ水井钻机进行了改造,使其具备了高压喷射功能,并运用于囊式扩体锚杆的施工中。应用结果表明:改造后的钻机继承了原有设备占用空间小、机动灵活的特点,可以在场地狭窄区域施工,并且能够快速移动,提高了施工效率;同时,囊式扩体锚杆的基本试验和挖掘出的完整囊体也表明,改造后的钻机能够胜任高压喷射扩孔工作,达到了预期目标。 In order to improve equipment utilization and meet the needs of on-site construction, the single-function GSD-Ⅱ water well drilling rig has been transformed to have the high-pressure injection function and used in the construction of the capsule expansion anchor. The application results show that the modified drilling rig inherits the advantages of small occupied space and flexible maneuvering equipment, which can be applied in the narrow area of ​​the site and can move quickly and improve the construction efficiency. At the same time, the basic test of the capsule expansion anchor And digging out the integrity of the bag also shows that the modified rig capable of high-pressure jet reaming work to achieve the desired goal.