PROBLEM TO BE SOLVED: To provide an underground irrigation system which can reduce construction cost and shorten construction period by simplification of a configuration.SOLUTION: The underground irrigation system comprises a water supply basin 1 disposed at one side, a drainage basin 2 disposed at the other side, a supply water distributing pipe 3 which is connected to the water supply basin 1 and supplies water to a perforated water supply pipe 5, a drain water collecting pipe 4 which is connected to the drainage basin 2 and collects the drain water from the perforated water supply pipe 5, a drain pipe 9 connected to the drainage basin 2, water supply equipment for supplying water to the water supply basin 1, and a control panel C, wherein the drainage basin 2 includes a water level detection chamber 2b having a water level detector W and a drainage chamber 2c which stores overflow water from the water level detection chamber 2b, and the control panel C controls water supply of the water supply equipment on the basis of a water level detection signal from the water level detector W.COPYRIGHT: (C)2015,JPO&INPIT【課題】構成が簡素化され、それにより施工コストの低減が図られ、かつ、施工期間が短縮される地下灌漑システムを提供する。【解決手段】一方に配設された給水桝1と、他方に配設された排水桝2と、給水桝1と接続され有孔給水管5に給水する給水分配管3と、排水桝2と接続され有孔給水管5からの排水を集水する排水集水管4と、排水桝2に接続された排水管9と、給水桝1に給水する給水設備と、制御盤Cとを備え、排水桝2は水位検出器Wを有する水位検出室2bと、水位検出室2bからのオーバーフロー水を貯留する排出室2cとを有し、制御盤Cは水位検出器Wからの水位検出信号に基づいて給水設備の給水を制御するようにした地下灌漑システムSである。【選択図】図1
