Tunnel sewage disposal diversion construction method and structure

The invention discloses a construction method and structure for tunnel sewage disposal and diversion. Tunnel sewage disposal and diversion comprise a sewage disposal and diversion downslope drainage structure, a sewage disposal and diversion counterslope drainage structure and a sewage disposal and diversion inclined shaft drainage structure. The sewage disposal diversion downslope drainage structure comprises a clear water drainage ditch, a waste water drainage ditch, a waste water fixed pump station and a clear water fixed pump station. The sewage disposal diversion reverse slope drainage structure further comprises a water collecting pit and a waste water moving pump station. The sewage disposal diversion inclined shaft drainage structure comprises three groups of fixed wastewater pump stations and fixed clear water pump stations which are sequentially arranged in the drainage direction of an inclined shaft. According to the technological process, clear water and sewage are discharged in a split-flow mode.