« TOP / 分類：文化材・防災技術
- 2009年7月8日
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重要建築物の危機を救え！
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古い建物の基礎には、石材が用いられていることが多い。
福井県では１５００年も前から、凝灰岩を主とした石を基礎などに用いており、中でも「笏谷石」といわれる石材は、かつて全国に出回っていた。
これらの石材は、長い間の風化によって近年、剥離・剥落が発生しているものが多い。
今回、ある寺院の建築基礎石が強風化したため、その一部をＴＯＴで強化保存した。
亀裂が多く、剥落した部分の復旧は今回は行わないが、これ以上の風化抑止のために処理を行い、現在、経過を観察中である。
ある寺院の建築物
基礎石の破損箇所
亀裂が多く発達する多くの石材や石造物の風化侵食が現在、多発している。このような重要物や歴史的な遺産を強化し、そのままの姿で後世に受け継いでいくために、ＴＯＴが役立つことを願っている。
TOTによる強化処理
- カテゴリー: 文化材・防災技術
- 2005年5月24日
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長江三峡地区遺跡探査探検記
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古代水文観測遺跡 「白鶴梁枯水題刻遺跡」
「万里の長城」建設以来の大工事と言われる三峡ダム、工事はほぼ予定通り進み、段階的に貯水が始まっている。中国最大の大河「長江」は水の文明を育み長江文明として世界の注目を浴びてきた。長江がせき止められると６３２K㎡の陸地が水没する。それにより８２８カ所の貴重な文化財が水没することが確認された。三峡地区には春秋時代に巴国と楚国文化が出会った重要な土地である。人類の貴重な文化財を救う手段として政府は、科学的方法による調査研究に重点を置いた。1994年3月国家文物局の許可を得て、当社は国家地震局、四川大学などと合作総数２０名余の探査隊が組織された。3月12日隊員は上海と北京から重慶に集合し、四川省隊員と合流、翌日客船でフウ陵市へ旅だった。私の最初の海外探査探検である。ここでフウ陵市の「白鶴梁枯水題刻」遺跡を紹介しよう。
「水没地には百以上の水位観測所があり、長江上流の水位を千年以上にわたって記録している。中でも「世界第一の古代水位観測所」という題字を刻んだフウ陵の白鶴梁は、長さ1600m幅約15mの天然の石梁で、渇水期にだけ水面上に現れる。現れる度に記録を刻む。唐の広徳元年（763年）から今世紀初めまで、約1200年間の72年分の渇水の状況を記し、18匹の魚の石刻、さらに宋代の黄庭堅い、明代の王世貞といった歴代の名人の筆になる碑文を刻んでいて「水下の碑林」と言われている」（唐登清の対談から）魚の石刻が水面に露出することは百年間で数回しかない。幸運にも探査探検の最初に見学できた。その時「水中博物館」構想を聞いたが現在どこまで進んでいるのか興味深い。
写真は、長江中央に現れた白鶴梁と魚の石刻と私。隣の警官が最後まで私のそばを離れず協力してくれた。
（1994年3月13日撮影）次回に続く
- カテゴリー: 文化材・防災技術 タグ: 海外 上海 人類 名人 中国 国家 時代 警官 土地 建設 天然
- 2005年5月13日
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遺跡探査を試みませんか。
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発掘前に非破壊法による遺跡の物理探査を行い、地下の異常箇所の絞り込みや遺構の存在が推定できます。探査方法は、帯磁率探査、磁気探査、電気探査、電磁誘導探査、自然電場探査、地下レーダ探査、表面波探査など国内外での実績の蓄積技術で対応できます。ご相談に応じます。
- カテゴリー: 文化材・防災技術
- 2005年5月13日
-
土と石遺跡の強化保存室内実験をいたします。
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