UNDERGROUND MATERIAL BURYING METHOD

摘要

PROBLEM TO BE SOLVED: To provide underground material burying method capable of press fitting underground buried material with small diameter and low strength whatever type of intrusion method may be applied and showing less occurrence of boring surplus soil and provide a hollow tube tip cap having a simple structure used for this method and enabled to be manufactured at low cost. ! SOLUTION: This invention relates to a hollow tube tip cap 10 arranged at the extremity end of the hollow tube 50, moved together into ground through intrusion of the hollow tube 50 and left in the ground after the hollow tube 50 is pulled out of the ground. The hollow tube tip cap 10 comprises a bottom plate part 1 abutted against the extremity end of the hollow tube 50 and press inserted into the ground; and a cylindrical protrusion 2 entered into the hollow tube 50 so as to restrict lateral motion of the hollow tube 50 and extend in its standing state at the central part of the bottom plate part 1 for supporting the undergrou