According to the requirements of the use of what equipment,
The fastest process is:
1, surveying and mapping personnel first all mapping side by side, in the process of mapping and mapping to record the serious siltation of the lot (physical exploration of the can not be 100 percent accurate, and later need to test the information to improve, if you need to re-testing to them to count the second cost, after all, the price of physical surveying and mapping of the most projects in the cheapest)
2, with the surveying information on the need for descending, desilting places construction, method is as follows.
2, with the mapping of the physical exploration of the information on the need for precipitation, dredging places for construction, the methods are as follows:
Pipeline robots (CCTV), pipeline periscope (QV), sonar, geological radar, etc.
Best use of CCTV, the advantages of a more accurate, the disadvantages of the test
The best use of CCTV, the advantages of more accurate, the disadvantages of detection is very slow, usually need to be dredged with the municipal roads and neighborhoods;
QV auxiliary, the advantages of doing it quickly, the disadvantages of the long distance can not see, the neighborhoods are very good;
Sonar not to be done on the do not do, the small defects can not be detected, and it is very difficult to do, but also need to be threaded, but also to do it, and to do it. Advantages over the river pipe rupture situation river water backflow, you can use this method;
Geological radar can find the pipeline above the deconcentration, the disadvantages of the instrument is expensive, the accuracy is not too high.
3, the pipeline is processed cleanly on the pipeline robot cctv or periscope qv;
4, the final finishing on the cad or gis map
Of course, this method is also the most cost-effective
Manual input! ~give points ha
1.Technical Guidelines for Data Collection and Management of Census of Urban Drainage and Flood Prevention Facilities (Trial) (Ministry of Housing and Urban-Rural Development, 2013.6);
2.Technical Specification for Drainage Pipeline Television and Sonar Detection and Evaluation (DB31/T444-2009);
3.Technical Specification for Maintenance of Urban Pipes, Ducts, and Pumping Stations ( CJJ 68);
4. Technical Regulations for Urban Underground Pipeline Detection (CJJ 61-2003);
5. Technical Specification for Satellite Positioning Urban Surveying (CJJ/T73-2010);
6. Technical Regulations for Maintenance of Urban Drainage Drainage Drainage Pipes and Pumping Stations (CJJ 68-2007);
7. Technical Specification for Water Supply and Drainage Pipe Specification for Construction and Acceptance of Water Supply and Drainage Pipes GB50268-2008;
8. Technical Regulations for Detection and Evaluation of Urban Drainage Pipes (CJJ 181) and other relevant regulations and standards.