The method to solve the problem of screw pile

　　The reasons for sticking in Construction: in addition to the fact that there are disordered strata that can be used as machines to jam in the normal drilling process, there are also the following reasons.

　　1. Broken blade;

　　2. The diameter of the new bit is larger than that of the previous one;

　　3. When drilling, the machine moves or the drilling tool deviates in the hole;

　　4. In the process of drilling, rocks fell from the hole walls and orifices, as well as large cracks and karst caves;

　　5. It is difficult to discharge the dust in the area with mud and stone;

　　6. During the operation, there was carelessness. During the long-term shutdown, the rock powder was not blown clean, and the drilling tool was not lifted, so that the impactor was buried by the rock powder;

　　Solution to the problem of spiral ground pile: now the strength of the drill bit and the problem of broken wing have been almost solved. If there is a special situation, a section of seamless pipe with the diameter similar to the hole diameter can be used, and the material such as butter and asphalt can be installed in the pipe, which is connected with the drill pipe to enter the lower end of the hole, and the broken wing in the pipe can be taken out. Before fishing, the rock powder at the bottom of the hole can be taken out Blow clean. If it is a very serious situation that makes it impossible to lift and release the drilling tool, and the impactor does not sound, now it is only necessary to add additional torque or use auxiliary tools to help lift the drilling tool, so that the drilling tool can rotate, and then it is necessary to lift the drilling tool while supplying air until the problem is solved. When drilling with heavy head, a little pressure should be applied first, and then the propulsive force should be increased gradually until the normal working pressure.