| 摘要 |
The present invention relates to a prefabricated manhole capable of collecting and discharging rainwater of a given amount flowing along a road at rainy season. More specifically, the present invention relates to a prefabricated manhole in which only rainwater flows with no sludge on various roads, in which it is configured to receive only the rainwater of a given amount which is subjected to water treatment by gravel or rubbles and a filter, thereby decreasing occurrence of bad smell by interrupting inflow of sediments, in which an iron structure such as a lid is not required for the upper portion, and thus there is no concern about theft, and in which vegetation is available in a rainwater inflow portion of the upper portion, and the rainwater inflow portion is covered by a wood lid to finish an exposed top surface, thereby improving the city environment. The prefabricated manhole includes a circular or rectangular concrete manhole (10) having a hollow portion; a rain inflow portion (100) of a top-wide and bottom-narrow shape provided with an intermediate partition (110) made of concrete material to accommodate at least one selected from a group consisting of rubbles or gravel, a fiber sack, and vegetation soil which have a primary filtering function of the rainwater flowing in an upper flange (11), and a plurality of filtering holes formed in the intermediate partition (110) to discharge the rainwater flowing in the rainwater inflow portion; and a rainwater discharge chamber (200) formed below the intermediate partition (110) of the rainwater inflow portion (100) to discharge the rainwater passing the filtering holes (120) to a sewage connection hole (210) formed in the lower portion. |
