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3-4.漏えい箇所・拡散状況追加調査(拡散状況)<br />

地盤改良<br />

ドレーン設備<br />

約1.1m<br />

約1.5m<br />

砕石充填<br />

約6m<br />

断面図<br />

遮水シート<br />

約10m<br />

漏えい箇所調査<br />

斜めボーリング<br />

(長さ12m程度)<br />

拡散状況調査<br />

鉛直ボーリング<br />

(長さ10m程度)<br />

新設観測孔<br />

Aライン<br />

(実施済)<br />

11

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