The invention provides a
pipe burying method by which a
diameter of a
pilot hole can be efficiently and reliably enlarged depending on various types of soil and a burying operation of a buried
pipe is made stable. The method involves preparing various types of platy members, selecting a platy member suitable for a
soil type from among the various types of platy members on the basis of a
soil type search of a burying place, and attaching the selected platy member to a
reamer main body, thereby forming a
reamer suitable for the
soil type. The method further involves annexing this
reamer at a front end of a rod in a
pilot hole, and pulling out this rod from the
pilot hole while rotating the reamer together with the rotation of the rod, thereby burying a buried
pipe to be connected to the reamer in the earth.