Roof plantation roofing system for underground substation

The utility model relates to a roof plantation roofing system for an underground substation, and the system comprises an underground substation roof, a slope-finding layer arranged on the underground substation roof, a double-structured anti-water layer, an isolating layer arranged on the anti-water layer, a protection layer formed by fine stone concrete embedded with a bidirectional reinforcement mat, an accidented drain board arranged on the protection layer, a filter layer arranged on the drain board and a covering soil layer arranged on the filter layer. Compared with the prior art, the roof plantation roofing system has the following advantages: firstly, the draining function is realized and thus roots of plants planted on the roof will not rot, secondly, the employed filter layer can prevent infiltrated water from flushing away fine soil and matrix elements located in a plant supporting layer, mud will not be formed, and thirdly, anti-water function failure or structural damage caused by the plant roots