Non-replacement construction method of reinforcing pipe jacking friction reduction slurry

The invention relates to a non-replacement construction method of reinforcing pipe jacking friction reduction slurry. The method comprises the following steps that: after the tunnel breakthrough, curing slurry is injected from a position of a slurry injecting hole in a pipe joint, so that the curing slurry is mixed with the friction reduction slurry injected outside the pipe joint; and curable mixed slurry is formed, wherein the curing slurry comprises cement, lime and water. The method of injecting the curing slurry to be mixed with the friction reduction slurry is adopted; the slurry replacement process in the conventional replacement construction method is omitted; and the mixture obtained after the curing slurry and the friction reduction slurry are mixed can be cured, and the intensity of the cured mixed slurry is higher than the intensity of soil bodies around a tunnel, so that a good reinforcing effect is achieved. Through adopting the curing slurry injection method, the disturbance on a soil layer in the tunnel can be reduced; the surface settlement can be effectively controlled; and the waterproof performance of the tunnel is improved.