Plumbs are not unearthedThe methodology can be broadly divided into two categories: total and partial。
The undrilled repair of the body was the overall repair of a damaged portion of the pipe, which restored its original function。
The main methods currently used for the overall rehabilitation are the following:
Plugging: for repair of pipes with an inner diameter of 200 mm or more。
In situ solidification: applies to the repair of the 200mm-2700mm internal diameter pipe。
3 the fragmentation (fragmentation) method: applies to the rehabilitation of the 200mm-1200mm internal diameter pipe。
Collapse internal lining: applies to the repair of the 200 mm-1400mm pipe with an inner diameter。
5 indent internal lining: applies to the repair of the 200 mm-1100 mm internal diameter pipe。
Mechanical spiral entanglement: for repair of the 200 mm - 3000 mm internal diameter pipe。
7 the internal lining of the tube: applies to the repair of 800 mm - 3000 mm pipe with an inner diameter。
Non-drilling local repairs may be performed using non-drilling local repairs when the plumbing is in good condition and only partially defective (fissile or compost damage)。
The non-drilling partial rehabilitation currently consists mainly of the following methods:
1 the stainless steel cylinder method applies to the repair of the 200mm-1500mm pipe with an inner diameter。
2. Dot in situation, applicable for repair of the 200 mm-1500 mm internal diameter pipe。
The repair was followed by the inspection of the effects of the repair of the pipeline using pipe robots, and measures to improve the repair of the defective areas were needed。
Work wells were restored after completion of repairs。
From http://www. Dainuowei. Com
