A study on historical changes for mine tunnels based on three dimensional points-cloud of mine ruins

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K01131
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 03060:Cultural assets study-related
• Research Institution: Matsue National College of Technology
• Principal Investigator: kuma hideki 松江工業高等専門学校, 電子制御工学科, 教授 (40259924)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 遺跡調査 / 鉱山遺跡 / ３次元レーザスキャナ / 鉱山絵図

Outline of Final Research Achievements

We have already investigated the internal structure of several mining tunnels remained in Japan using the remote control robots that can perform contactless measurement of them through various sensors. Specifically we have obtained the following data of each mining tunnel: internal images, cross section shapes, mining directions, mining inclination and so on. A comparison between those data and the description in old documents has enabled us to clarify the characteristics of the shape of mining tunnels in terms of mining age. This relationship can be useful for better understandings of the changes for mining method across the ages. But it is usually difficult to investigate the slope surface directly because it is often covered by vegetation such as trees and bushes. This research proposes a novel method to measure the quantitative data of such a slope, on which several mining tunnels exist, using 3D laser scanners.

Free Research Field

遺跡調査

Academic Significance and Societal Importance of the Research Achievements

日本各地には、古代から近代にいたる鉱山遺跡が多数存在している。しかしながら近世以外の鉱山開発と操業の実態は十分に明らかにされていない。鉱山開発は我が国の政治経済、軍事など社会活動に重要な役割を果たしてきた産業であったが文献史学、鉱山史学の研究に比べて坑道内形状や坑道周辺の定量データからのアプローチがかなり遅れている。このため未解明な点が多く残されており鉱山遺跡全体の把握は進んでいない。日本列島上に展開された金銀銅山を中心とする鉱山遺跡の所在、規模、開発年代等の実態を明らかし、鉱山開発初期の技術を詳細に解明し紐解くことが、初歩的ではあるがなによりも学術的に重要である。