Medium-long distance super-large diameter pipe jacking thixotropic slurry anti-drag grouting system and method

The invention provides a medium-long distance super-large diameter pipe jacking thixotropic slurry anti-drag grouting system and method. The medium-long distance super-large diameter pipe jacking thixotropic slurry anti-drag grouting system comprises a grouting system and a thixotropic slurry system, the grouting system comprises a slurry storage tank, a grouting pump station, a slurry mixer and a grouting material storage yard, and the thixotropic slurry system comprises a slurry A and a slurry B which are used for synchronous grouting and slurry supplement along a line. The slurry A for synchronous grouting is prepared from bentonite, sodium carbonate and carboxymethyl cellulose according to the ratio of 333 to 17 to 1, and the slurry B for supplementing slurry along the line is prepared from PAM-3, NaCl and water according to the ratio of 8 to 8 to 1. The grouting method comprises the steps of tail synchronous grouting, along-line grouting and control over the grouting amount and the grouting pressure. Acc