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在保证硬质合金地质钻头与空心钻杆预紧螺纹连接的情况下,采用侧式注水器一端用销钉与煤钻机接头连接互配,另一端采用螺纹接头与钻杆连接互配湿式作业将锚杆连根拔起达到回收锚杆的目的。
In the case of preconditioning of hardmetal geological drill bit and hollow drill pipe, one side of the side-type water injector is matched with a coal drill joint through a pin and the other end is connected with a drill pipe through a threaded joint to cooperate with a wet work to anchor Rod uprooted to achieve the purpose of recovery bolt.