First, the importance of the maintenance of the urban drainage pipe networkThe drainage pipe network is an indispensable part of the modern urban infrastructure, it is the "porter" of urban water, the main role is to collect and transport rainwater and the sewage generated by urban production and life, and its components include drainage pipes, drainage pumping stations, etc. Whether the urban drainage pipe network construction system is reasonable, whether the drainage pipe network is operating normally, and whether the drainage pipe network facilities are complete directly affect the happiness of urban people's lives, and also directly affect the potential of urban economic development, and are closely related to the process of harmonious social construction. With the rapid development of China's economy, the scale of the city has also expanded, the urbanization process has also advanced rapidly, the urban population has increased, and the sewage and wastewater generated by residents in daily production and life need a large drainage system to be effectively transported, in recent years, the problem is also taken into account in urban development, and the construction of the drainage pipe network has been gradually increasedIn order to maintain the normal operation of the drainage pipe network, make the drainage pipe network play its role, and make due contributions to the development of the urban economy and the quality of life of residents. Second, the work content of the maintenance and operation of the urban drainage pipe networkThe work content of the maintenance and operation of the urban drainage pipe network mainly includes four aspects: daily maintenance, inspection of drainage facilities, overhaul of drainage facilities and renovation of drainage system, and inspection of drainage facilities structure. 1. Daily maintenance of drainage facilitiesDaily maintenance is the most basic maintenance content of the drainage pipe network, mainly to solve the faults found in the process of facility inspection and inspection, through daily maintenance, to restore the normal use of the drainage pipe network, to achieve the drainage pipe network can flow smoothly, normal and stable operation of the goal. In detail, the maintenance content includes dredging blocked pipes, digging or flushing pipelines by manual or high-pressure cleaning vehicles, etc.; Individual repairs, including replacement of manhole covers, maintenance of gates, etc.; repair of manhole covers and drainage pipes; Removal of clogged pipes, such as cleaning of sludge in pipelines, etc. 2. Inspection of drainage facilitiesThere are two ways to inspect facilities, one is manual inspection, which has a small inspection scope and can inspect about 10 kilometers in one working day; The other is mainly to use motor vehicles for inspection, and the inspection route is generally along the urban traffic arteries, and 30 kilometers can be inspected in one working day. 
3. Overhaul of drainage facilities and renovation of drainage systemThis work content is to supplement and improve the daily maintenance work, and the problems that can not be solved in the daily maintenance are treated by engineering means, especially the problems that the urban pipe network can not be used normally, such as the problems such as cracks in the pipeline, and then the old damaged drainage system is transformed. 4. Structural inspection of drainage facilitiesThis content mainly inspects the operation status, structural effect and integrity of accessories after the drainage pipeline is put into use, mainly including whether the drainage pipeline has silt; Whether there are gaps, faults, damages, cracks, collapses in the structure of the drainage pipes; Detection of toxic and harmful gases and flow monitoring in drainage pipes. Third, the current maintenance and operation of China's urban drainage pipe network1. The maintenance technology is insufficient, and the maintenance equipment is backwardFirst of all, the maintenance technology is insufficient, the flow monitoring of the drainage pipeline basically adopts manual monitoring, the place where the advanced monitoring equipment is used is very few, and the dredging equipment is relatively single, the function is insufficient, the cement slurry condensed inside the pipeline can not be completely removed, and the secondary cleaning is often required; Secondly, the maintenance equipment is backward, open the manhole cover to repair the inside of the pipeline, or use backward iron hooks, pickaxes and other tools to open the cover, and there is no research on the opening technology of different manhole covers; When carrying out silt excavation and rainwater dredging operations on pipelines, most of the tools used are manual tools, which not only increases the labor intensity of maintenance work, but also has a certain degree of potential safety hazards. 
2. The maintenance and operation management system is not perfect, and the detection of the urban pipe network is not strongAt present, most of the maintenance, operation and management of China's urban drainage pipe network are still implemented by local governments, and there is no enthusiasm for mobilizing social participation, and there is no role in optimizing the allocation of resources by the market. At the same time, the local management of the drainage pipe network is carried out by a number of departments, the lack of unified management, the decentralized management mode makes the responsibilities of the drainage pipe network unclear, the lack of effective communication mechanism for the information of the drainage pipe network, and the establishment of a perfect urban drainage pipe network maintenance management information system, so that the drainage pipe network problems are not dealt with in a timely and rapid manner, and the failure of the urban pipe network is not targeted to the emergency plan; The imperfection of the system makes the complex problems in the drainage network lack effective decision-making, and the unclear division of labor makes it difficult to implement the pipeline maintenance plan, which restricts the maintenance and repair of the urban drainage pipe network. 3. The structural design of the urban pipe network is unreasonableDue to the constraints of the past economic development level and the lack of technical ability, the construction of drainage pipe network structure in the old city of many cities is not coordinated with the later urban development, and the pipe network design of the old city is not suitable for the development of modern drainage pipe network maintenance, and at the same time, there is no corresponding implementation condition to maintain the backward urban pipe network design, which brings many obstacles to the future pipe network maintenance work. If the drainage pipe network in the old city is renovated, problems such as large capital investment and large amount of work will appear. There are also some problems left over from history that increase the burden of urban pipe network maintenance. 4. The contradiction between heavy maintenance tasks and insufficient maintenance investmentDrainage pipe network operation and maintenance investment is seriously insufficient, so that maintenance tools and maintenance equipment are difficult to be updated in time, at the same time, the maintenance workload of urban drainage pipe network is large, the task is heavy, the contradiction between the two makes the urban drainage pipe network can not play its normal role because of the lack of normal maintenance, and the enthusiasm of the staff is difficult to fully mobilize, which is also equivalent to indirectly reducing the work efficiency of drainage maintenance operation management. Fourth, measures to solve the problem of urban drainage pipe network operation1. Research and development of maintenance technology and introduction of advanced maintenance equipmentIncrease research support for advanced conservation technology, actively explore, strive to innovate, diversify the development of conservation technology, use advanced conservation technology to improve the efficiency of conservation means and conservation work, and save conservation costs. At present, our unit uses the combined dredging vehicle, and has achieved very good results, this equipment has a strong function in the maintenance of the drainage pipe network, and can recycle water resources, and the cement slurry that is not easy to clean up in the pipeline can also be well treated, which can not only save resources, but also improve the efficiency of maintenance. Therefore, in the maintenance and operation of the urban pipe network, the research and development technology can be combined with the introduction of equipment, and the two-pronged approach can be used to solve the maintenance and operation problems. 
2. Strengthen the detection of urban drainage pipe networksThe detection of the operation of the drainage pipe network is an important part of the maintenance work, only by strengthening the detection of the urban pipe network, in order to improve the pertinence of the maintenance problem, so that the problems of the urban drainage pipe network can be found and solved in a timely manner, and the normal operation of the urban drainage pipe network is maintained. Based on this, it is necessary to abandon the time-consuming and labor-intensive monitoring methods of manual monitoring in the past, and adopt advanced monitoring technologies, such as pipeline periscope QV, pipeline closed-circuit television CCTV monitoring, etc., and use these monitoring technologies to improve the quality of monitoring the maintenance and operation of the urban drainage pipe network, and ensure the normal operation and smooth circulation of the urban drainage pipe network. 
QV check
CCTV check3. Reasonable construction of urban drainage systemAccording to the requirements of urban development planning and the actual geographical situation of the city, the scientific design and reasonable construction of urban drainage facilities and drainage systems, so that the maintenance of urban drainage pipe network to meet the prescribed maintenance standards and maintenance specifications, and in the construction of reasonable planning, enhance the forward-looking construction, do not make the construction of urban drainage infrastructure and future urban construction conflict. 4. Increase investment and solve contradictionsIncrease the capital investment in the urban drainage pipe network, update the maintenance tools and maintenance equipment in a timely manner, call on the general public to drain the water reasonably, discharge the waste water for different production and life in accordance with the provisions of the pipeline, reduce the work burden of the management and maintenance personnel, and at the same time, establish an incentive mechanism, set up bonuses or honorary titles, and give those staff with outstanding performance in the urban drainage pipe network work, and fully mobilize the enthusiasm of the urban drainage pipe network staff. 5. Adopt modern management methods to improve the level of maintenance managementThe relevant drainage departments should strengthen the management of urban drainage maintenance and operation, establish an information-based urban drainage pipe network maintenance management system, and implement dynamic management of the drainage pipe network to provide a reliable guarantee for the safe and stable operation of the urban drainage system. In addition, a large-scale and wide-ranging monitoring layout should be carried out to systematize and scale the monitoring of the drainage pipe network to ensure that the maintenance and operation of the urban pipe network truly play the role of transporting waste water and rainwater. The maintenance and operation of the urban drainage pipe network is very important to the development of the city, and it is necessary to make comprehensive planning, reasonable planning and scientific maintenance, so as to truly play the role of the urban drainage pipe network in urban development and ensure the normal operation of the city and the normal life of the people.