FREEZING METHOD
PROBLEM TO BE SOLVED: To provide a freezing method capable of: reliably and simply controlling freezing expansion pressure; shortening a construction period; and reducing a cost.SOLUTION: In a freezing method which increases waterproof and strength performance of the ground by freezing the same, pre...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a freezing method capable of: reliably and simply controlling freezing expansion pressure; shortening a construction period; and reducing a cost.SOLUTION: In a freezing method which increases waterproof and strength performance of the ground by freezing the same, preceding excavation of a portion of the ground at an inner side of a frozen ground wall is conducted at an arbitrary timing between a stage when waterproof performance is secured with the frozen ground in a predetermined region continuously constructed after a commencement of ground freezing operation and the stage when strength performance is secured with the frozen ground wall having a required frozen ground thickness constructed.SELECTED DRAWING: Figure 6
【課題】確実且つ簡便に凍結膨張圧を制御でき、工期短縮、コストダウンを可能にする凍結工法を提供する。【解決手段】地盤を凍結させ、地盤の止水性能及び強度性能を向上させる凍結工法において、凍結運転開始から所定領域の凍土が連続的に繋がって止水性能が確保された段階と、必要な凍土厚の凍土壁が造成されて強度性能が確保された段階との間の任意のタイミングで、凍土壁に対して内側の領域の一部の地盤を先行掘削する。【選択図】図６ |
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