TUNNEL TYPE RAINWATER RESERVOIR PERCOLATE SYSTEM AND ITS CONSTRUCTION METHOD

摘要

The present invention relates to a tunnel type rainwater storage and infiltration system and a construction method thereof, which reduce city flood damage caused by localized heavy rain by discharging initial rainwater and a part of rainwater flowing into a street inlet to a rainwater pipe, transferring the rainwater flowing into the street inlet to a tunnel type storage tank through an overflow pipe, and storing and infiltrating the rainwater into the ground; and enables construction without the disconnection of a tunnel type storage tank by receiving pipe obstructions, such as a gas tube, a wire tube, and a pipe tube on the installation line of the tunnel type storage tank, in a connection box and connecting the connection box to a tunnel box, thereby contributing to the prevention of city flood damage and flooding.