Water injection well
A technology for water injection wells and well bodies, which can be used in waterway systems, water supply devices, soil drainage, etc., and can solve the problems of polluted groundwater, slow infiltration, and low service life.
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[0013] In a certain place in Haidian District, Beijing, a 500-caliber well with a depth of 18 meters was drilled using the water method, and the well was washed. Use a high-pressure water gun consisting of a 13-meter-long, 1-inch steel pipe and a nozzle, and use a pump with a lift of 50 meters and a displacement of 3 cubic meters per hour to supply water to expand the position at a depth of 12 to 12.5 meters. Divide into three times, put water in the first two times, fill 0.5 meters and 1.8 meters respectively. The third time there was too little water, 13.5 meters. Start to add filter material, the specifications of quartz sand and the amount of material to be added in order are as follows: 20-40 mm per bag (one bag weighs about 50 kg), 10-20 mm per bag, 5-10 mm per bag, 2-5 mm One bag completes the base layer, 12.5 meters. After that, 1 bag of 1-2 mm, 2 bags of 2-5 mm, 2 bags of 5-10 mm, 4 bags of 10-20 mm, and 4 bags of 20-40 mm (17 bags in total). Down tube 12 meters. ...
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