Arched tunnel top plate pouring method

The invention relates to the field of arched tunnel construction, in particular to an arched tunnel top plate pouring method which comprises the following steps that a bottom die assembly is built; a steel bar frame is built on the bottom die assembly; top formwork assemblies are built on the two sides of the steel bar frame correspondingly; the two ends of an opposite pull rod set are fixedly connected with the top mold assemblies on the two sides correspondingly; and concrete is poured to the steel bar frame, and the arched tunnel top plate is formed. The concrete pouring mold has the beneficial effects that the bottom mold assembly and the top mold assembly are used for limiting the concrete pouring range; the opposite-pull rod sets are additionally arranged between the two sets of top mold assemblies, the distance between the opposite-pull rod sets is limited, the two sets of top mold assemblies are prevented from floating upwards, and the pouring effect of the arched tunnel top plate and the forming reli