The invention relates to an
underground pipeline excavation-restoration construction method of stage temperature-control field
pipe-making, comprising the following steps: (1) an old
sewage pipeline is plugged and cleaned, and closed-circuit
television equipment is adopted to detect the inner part of the pipeline; (2) an impervious tubular auxiliary lining flexible
pipe is arranged in the pipeline, and soaking hardened resin is filled to form a resin flexible
pipe; (3) the resin flexible pipe and a hot
water delivery pipe for heating are turned over and are inserted in the impervious tubular auxiliary lining flexible pipe; (4)the resin flexible pipe is expanded to be closely attached to the inner wall of the old pipeline by utilizing water and compression air, the hot water is heated in a circulating way, the resin flexible pipe is hardened, and a lining new pipeline is formed on the inner wall of the old pipeline; (5) the pipe orifices at two ends of the lining new pipeline are
cut, so as to lead the pipeline to be smooth. The method is characterized in that: the heating circulation of hot water is divided into three steps: a first step is carried out for 40-45 minutes at the temperature of 73-75 DEG C; a second step is carried out for 55-60 minutes at the temperature of 82-84 DEG C, and a third step is carried out 30-35 minutes at the temperature of 25-30 DEG C. The method can prevent seepage, and can prevent the hardened resin which is soaked in the material and is solidified and not hard from
cracking caused by sharp cooling.