Water spraying test device and method for sponge low-influence facility

The invention discloses a water spraying test device and method for a sponge low-influence facility. The water spraying test device for the sponge low-influence facility comprises a water pressure regulator, a water supply pipe and at least two shower nozzles. The shower nozzles are connected to the water supply pipe in parallel. Supports are arranged below the shower nozzles. Four rain gauges are arranged in the water spraying coverage range of each shower nozzle, and the four rain gauges are suitable for being uniformly arranged on the ground in the circumferential direction by taking the shower nozzle as the center. A permeation rain gauge is arranged beside each rain gauge. The water spraying test method for the sponge low-influence facility comprises the steps of checking before installation, determining the positions of supports, installing a water supply device, installing nozzles, arranging rain gauges and permeation rain gauges, performing pressure test debugging, completing the test and calculating