Fixing device for tunnel inverted arch rubber waterstop and construction method

The invention discloses a fixing device for a tunnel inverted arch rubber waterstop and a construction method, and relates to the technical field of fixing devices and methods for embedded rubber waterstops in the tunnel engineering construction process. The fixing device for the tunnel inverted arch rubber waterstop comprises a U-shaped clamping buckle and a buckle fixing support, wherein threaded holes are formed in two side plates, bolts are arranged inside the threaded holes in a matched mode, and the buckle fixing support is fixed to the portion, located outside a U-shaped groove, of a bottom plate. According to the fixing device for the tunnel inverted arch rubber waterstop, the rubber waterstop can be accurately positioned and fixed by adjusting the displacement of the bolts on the two side plates, the fixing device can accurately and stably fix the rubber waterstop, and guarantees that the rubber waterstop is in a straight and flat state all the time, and meanwhile, due to the fact that the fixing dev