1." style="box-sizing: border-box">Pipeline repair system Technical characteristics

(1) the construction period is short, the pipeline can be put into use as soon as possible, and no construction waste is generated.According to a well segment, the project plugging the diversion 1D, flushing 2D pipe and UV curing 1D, so the construction period is about 4D.   

2. The occupied area of equipment is small. In the process of UV curing CIPP, it is necessary to reserve equipment not less than 9m * 3M. The area occupied by the construction is small, the noise is low, the disturbance to the surrounding residents' normal life and the damage to traffic and environment is very small, and it has good economic and social benefits.   

The inner liner is durable and practical. The lining material has excellent properties, high bending modulus, bending resistance, tensile strength, corrosion resistance, abrasion resistance, high strength and high bearing capacity. After repair, the inner wall of the pipeline is smooth, the friction coefficient is reduced, and the pipe flow rate is increased by about 20%.   

2. Pipeline repair system Problems and suggestions

(1) the application of CIPP UV curing technology in sewage pipeline repair has just started, and there are no relevant design, construction specifications and engineering quality acceptance criteria. After the analysis, the quality inspection department decided to use the technology on-site demonstration and random sampling and testing methods on the ground to make a careful and careful measurement of the performance of the inner liner. It is hoped that the relevant departments will further study and formulate corresponding standards and norms so as to make the application of the technology more scientific, standardized and standardized.   

The key points of the technology include three points: first, the quality of lining materials; two, the pressure of curing process and the control of ultraviolet lamp's moving speed; three, the time and temperature control of UV curing. Among them, the quality of the inner liner plays a vital role. The early lining pipe basically depends on import and the cost is high. The domestic enterprises represented by Dao Yu resistance have been domestically developed through intensive research and development, and the relevant data have reached or surpassed the international advanced level, which greatly reduces the engineering cost.