JPH0634981B

PURPOSE:To make it possible to semi-permanently pumping up water without using power, by combining a water absorbing material and an evaporation chamber and recovering ground water sucked up above the ground by a capillary action by evaporating the same through the utilization of solar energy. CONSTITUTION:A water pumping-up passage 2 is opened by boring the ground so as to reach a ground water layer and a water absorbing material is inserted into said passage 2. In this case, a water blocking film 5 by a resin or steel pipe is formed to the part other than the range contacted with the ground water layer. A hermetically closed evaporation chamber 3 is provided to the ground side of the water pumping-up passage 2 and ground water sucked up by the water absorbing material 4 is at first diffused over a wide range by an evaporation floor 31 and evaporated by solar energy incident to the evaporation chamber 3 comprising transparent and water impervious glass. Water droplets adhered to the inner surface of the chamber 3 are flowed down along a roof 32 inclined to a single side and collected by the receiving tray 61 and the water collection tank 62 of a water droplet recovery apparatus 6.