Small guide pipe for tunnel forepoling

The utility model provides a small conduit for tunnel forepoling, and relates to the technical field of tunnel construction, the small conduit for tunnel forepoling comprises a grout outlet section and a grout stop section, one end of the grout outlet section is provided with a pointed cone part, the outer surface of the grout outlet section is provided with a plurality of grout outlet holes, the grout outlet section and the grout stop section are internally provided with grout inlet holes, and the grout inlet holes are communicated with the grout outlet section and the grout stop section. A grout stopping device is arranged at one end of the grout stopping section and comprises a first fixing disc, a second fixing disc and a grout stopping disc rotationally connected between the first fixing disc and the second fixing disc, and a grout inlet communicated with the grout inlet hole is formed in the first fixing disc; when the slurry inlet is in an open state, slurry can be injected into the slurry stopping sec