| 摘要 |
<p>PURPOSE:To provide a mark for an underground buried body achieving a favorable productivity, a reduced cost, and an increased longation ratio. CONSTITUTION:In a mark for an underground buried body to be buried close to an underground buried body to show existence of the underground buried body, it comprises base material of belt-weave fabric of warps 18 of low tensile strength, and wefts 20 of high tensile strength. In boring the ground, therefore, the mark for the underground buried body is caught by a shovel or the like to be pulled up, when the wefts 20 are elongated at a large elongation ratio, thereby the trustworthiness of founding the mark of the underground buried body can be enhanced.</p> |
