Butting and going forward slurry in use for operation of pushing pipe

The present invention discloses a top pipe jacking operation with mud. The top tube comprising a working slurry jacking following components, the following components in percentage by mass: 6 to 14% of bentonite, ammonium hydrolyzed polyacrylonitrile NH 4 -HPAN 0.6 ~ 1.1% , carboxymethyl starch ether CMS 0.5 ~ 0.9%, lubricant RH-3 0 ~ 2.5%, 35 to 60% blast furnace slag, 2.5 to 6% of sodium hydroxide, potassium sulfonated tannin SKTN 0.3 ~ 0.8%, I the amount of water. The mud solve the EPB top of the machine jacking process is easy to produce surface subsidence, the problem is too large and the friction caused by jacking failure.