Abstract:Aiming at the characteristics of small-diameter sewage pipelines, narrow country roads and large construction equipment in and out of inconveniency in the rural domestic sewage treatment projects, combined with Haiyan County Agricultural Pollution Treatment Facility Project, the technological process and construction process of the mini pipe jacking second construction method are introduced. The advantages of fast speed, small working area, high pipe paving precision and small influence on environment of mini pipe jacking are summarized. It is considered that the mini pipe jacking has the good application effect under the conditions of general sand and viscous geology, which provides the good solutions for the agricultural pollution treatment projects.