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SECONDARY DRAINAGE METHOD AT TIME OF FLOODING
The present invention provides a secondary drainage method for use at the time of flooding, with which it is possible to eliminate, at an early stage and without causing any environmental problems, localized flooding of land or of property that remains even after flooding of land or of property due to a localized severe rain storm, river flooding or the like has receded over a wide area. In a region in which it is known, from experiences or from topography or geological stratum conditions, that flooding of land or of property remains locally even after wide-area flooding of land has receded, a rainwater storage tank 1 is provided, drainage pipes 2 are installed between positions in which flooding of land or of property occurs and the rainwater storage tank, and inflow switching valves 3 are installed in portions where water flows in from the drainage pipes 2 to the rainwater storage tank 1. As a general rule, the flow of water into the rainwater storage tank 1 is prevented by switching the inflow switching valves 3 during the initial stages of a localized severe rain storm or of river flooding. After the wide-area flooding of land has receded, the inflow switching valves 3 are opened, guiding the water in the locally remaining zones of flooded land or of flooded property into the rainwater storage tank 1, and allowing the localized flooding of land or of property to be eliminated at an early stage.
SECONDARY DRAINAGE METHOD AT TIME OF FLOODING
The present invention provides a secondary drainage method for use at the time of flooding, with which it is possible to eliminate, at an early stage and without causing any environmental problems, localized flooding of land or of property that remains even after flooding of land or of property due to a localized severe rain storm, river flooding or the like has receded over a wide area. In a region in which it is known, from experiences or from topography or geological stratum conditions, that flooding of land or of property remains locally even after wide-area flooding of land has receded, a rainwater storage tank 1 is provided, drainage pipes 2 are installed between positions in which flooding of land or of property occurs and the rainwater storage tank, and inflow switching valves 3 are installed in portions where water flows in from the drainage pipes 2 to the rainwater storage tank 1. As a general rule, the flow of water into the rainwater storage tank 1 is prevented by switching the inflow switching valves 3 during the initial stages of a localized severe rain storm or of river flooding. After the wide-area flooding of land has receded, the inflow switching valves 3 are opened, guiding the water in the locally remaining zones of flooded land or of flooded property into the rainwater storage tank 1, and allowing the localized flooding of land or of property to be eliminated at an early stage.
SECONDARY DRAINAGE METHOD AT TIME OF FLOODING
SEKUNDÄRES ENTWÄSSERUNGSVERFAHREN ZUM ZEITPUNKT DER FLUTUNG
PROCÉDÉ DE DRAINAGE SECONDAIRE EN CAS D'INONDATION
LAND BUSINESS CO LTD (author)
2024-01-24
Patent
Electronic Resource
English
IPC:
E03F
SEWERS
,
Abwasserkanäle
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