METHOD AND APPARATUS FOR CONFIRMATION OF UNDERGROUND OBJECT

摘要

PURPOSE:To provide an underground-buried-object confirmation method wherein the position, the kind and the like of an existing underground buried object can be confirmed surely and the underground buried object can be investigated without being damaged and with extremely rich reliability and to provide an apparatus used for it. CONSTITUTION:The apparatus is constituted of a guide pipe 1 which is inserted into a part near an underground buried object 5 from the surface of the earth by removing soil at the inside, of an inner pipe 7 which is inserted into the guide pipe 1 and in which water inside has been drained and of an elastic member 8, for sealing, which is attached to the tip of the inner pipe 7 and which is brought close to the underground buried object 5.