Emergency blocking method for concrete pressure pipeline

The invention discloses an emergency blocking method for a concrete pressure pipeline. The emergency blocking method for the concrete pressure pipeline comprises the following steps that a prefabricated steel bar segment prepared from a steel bar is arranged on a set position pipe of the concrete pressure pipeline in advance; emergency blocking is conducted on the upstream side of the prefabricated steel bar segment, specifically, a geotechnical cloth layer, a wood plate layer and an annular steel ring are sequentially arranged on the pipeline wall, and a circular steel plate of which the diameter is the same as the inner diameter of the pipeline, a circular geotechnical cloth structure layer and a wood structure plunger are vertically arranged on the end face of the pipeline to block thepipeline; and emergency blocking is conducted on the downstream side of the prefabricated steel bar segment, specifically, three wood structure plungers are arranged, a circular geotechnical cloth layer and an aperture-type g