UV lining materials for trenchless curing sewers in the municipal department

Classification:

The second type is divided into local repair and overall repair according to the repair length.

Local repair refers to the repair of short-distance pipes, generally with a longitudinal length of less than 500mm.

Overall repair is to repair one pipe section at a time, that is, the pipeline from one inspection well to another inspection well. Sometimes it can even cross multiple inspection wells continuously. The length of one-time repair varies from 20 meters to 50 meters to 100 meters, or even 300 meters.

The overall repair can be divided into semi-structural repair and full structural repair, which are calculated and determined based on the comprehensive consideration of the original pipeline damage status: long-term modulus, long-term bending strength, Poisson's ratio, groundwater load, water buoyancy coefficient, soil load, soil density, and other factors.

The trenchless repair technology of the CIPP UV curing pipeline belongs to integral and full structural repair, which is suitable for both rescue projects and preventive urban operation and maintenance. It is widely used all over the world because of its wide application range, fast construction speed, and excellent repair results.