「燐火ゆらめく村のおもかげ」ー般社団法人日本建築学会
湖の上を歩きたい！！！
Unbuilt | 2023.7.31 | 「Lightfall」
Release
Sejima Kazuyo,Hirata Akihisa,Fujimura Ryuji, etc.
Judge
日本建築学会設計競 技会2023/全国入選（他タジマ奨励賞）
Award
Tani Takashi,Tsukamura Ryoya
Credit
製品番号:4
ダムについて考えたことなんてなかったんです、でもダムが今、結構やばいことになっているらしい。ダムの湖底に溜まり続ける砂がヘドロ化し、山から海にかけて悪影響を及ぼしているんだって。今回対象のダムは計画堆砂年100年、計画堆砂容量6000千㎡。平成31年3月時点の総堆砂量は131.3万㎥で計画値超過。前例を見るに問題が生じる可能性は高いことがわかってきました。今回の計画敷地である奥津湖は苫田村という人口6000人の集落を潰して建設された背景があります。衝撃的でした。そこでダムの堆砂問題と失われた苫田村という２つの課題を解決する提案を行います。
I had never really thought about dams before, but it turns out they are facing serious issues today. Sediment that continuously accumulates on the lakebed turns into sludge, causing negative impacts from the mountains all the way to the sea.
The dam selected for this proposal was originally designed with a 100-year sedimentation plan and a capacity of 6 million cubic meters. However, as of March 2019 (Heisei 31), the total accumulated sediment had already reached 1.313 million cubic meters, exceeding the planned value. Looking at past cases, it has become clear that significant problems are likely to arise.
The project site, Okutsu Lake, was created by submerging Tomata Village—a community of 6,000 people. This fact was striking. In response, this proposal aims to address two intertwined issues: the sedimentation problem of the dam and the memory of the lost village of Tomata.
提案を見る
掲載site
湖底に光さえ届けば、沈水植物が光合成により酸素を生み、湖底のバクテリアがヘドロを浄化してくれます。そこで湖底に光を届ける建築を考えました。その建築はただの環境装置でなく、それ自体が村のおもかげを湖上に光とともに再編してくれる。少し空に近づいた苫田村が湖中から揺らめく光とともに、新しい湖上のランドスケープとなって、村のおもかげを引き継いでいくイメージです。
If light can reach the lakebed, submerged aquatic plants can generate oxygen through photosynthesis, enabling bacteria on the lake floor to purify the sludge. Based on this idea, I designed an architecture that delivers light to the depths of the lake.
This structure is not merely an environmental device; it also reinterprets the memory of the village above the water through light. The image is of Tomata Village, slightly closer to the sky, re-emerging as a shimmering landscape on the lake’s surface—its presence carried by light rising from below, inheriting and transforming the memory of what was once there.
