CONSTRUCTION METHOD OF ARTIFICIAL LOW WATER PERMEABLE LAYER

PROBLEM TO BE SOLVED: To provide a construction method of an artificial low water permeable layer adopted as a kind of underground water level lowering construction method at underground work of the large depth in the sand ground or the gravel ground having a high underground water level. SOLUTION:...

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Bibliographische Detailangaben
Hauptverfasser: HIRAI YOSHIO, MORI KUNIMITSU, AOKI MASAMICHI, OKUDA NOBUYASU, SHIMIZU TAKAAKI, TAYA YUJI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a construction method of an artificial low water permeable layer adopted as a kind of underground water level lowering construction method at underground work of the large depth in the sand ground or the gravel ground having a high underground water level. SOLUTION: A water filling well 3A is arranged in one of the construction object ground, and a pumping well 3B is arranged in the other. At least two aqueous solutions X and Y are simultaneously or separately injected into the ground from the water filling well. Water is pumped up from the pumping well, and a hydraulic gradient is formed in the ground, and an underground water flow is generated to promote permeation. Water permeability of the ground is reduced by generating a fine and water insoluble deposit in the ground by contacting and reacting the two aqueous solutions in the ground. COPYRIGHT: (C)2003,JPO