Safety management of subsequent construction and operation of sewage pipeline?

With the acceleration of urban development and urbanization, the urban population is expanding rapidly, and the sewage pipe network is also expanding. However, the combined drainage system of rain and sewage formed for many years has brought difficulties to the subsequent construction of sewage pipe network, such as sewage interception, rain and sewage diversion, sewage access, rain and sewage diversion, etc. For example, the cadmium pollution incident in Longjiang River in Liuzhou showed the regulatory blank of the subsequent management of sewage pipe network to some extent, which sounded the alarm for the current situation and regulatory mechanism of the subsequent operation and management of sewage pipe network in China. China has changed its development mode, developed green GDP, implemented sustainable development planning and compulsory environmental protection measures for energy conservation and emission reduction, and the government's willingness to care about people's livelihood and environmental protection is becoming more and more obvious. It is of practical significance to study the safety problems in the subsequent construction and operation management of sewage pipelines. Sewage pipes collect sewage, and sewage pipes are also buried underground. They need to form a pipe network and be transported to the sewage treatment plant for treatment before being discharged. The foothold of sewage pipeline engineering is the safety of pipeline construction and the safe arrival of conveying medium at the destination. This paper investigates and analyzes the present situation of the subsequent construction and operation management of sewage pipelines in China, and formulates various corresponding safety management measures and countermeasures according to the safety risk factors investigated and analyzed.

Present situation of operation and management of sewage pipe network in China and safety management of subsequent construction of sewage pipe network

Safety factors affecting the operation of sewage pipe network and subsequent sewage pipeline construction. During the whole life cycle, there are many factors that affect the operation safety of sewage pipe network. From the design and construction of sewage pipe network to the end of its life cycle, the following factors mainly affect the operation safety:

(1) Design factor: Sewage pipes are usually designed according to urban planning and sewage pipe network design planning. Because of the low starting point of urban planning in China, the short planning cycle and the large scale of urban demolition, it has brought new security risks to the management and operation of sewage pipe network.

(2) Construction factors: In the construction stage, the construction unit unilaterally pursues the construction period and profit. , the construction process did not strictly follow the standards and specifications, failed to meet the design requirements, cut corners, uneven quality of the labor construction team, and the quality of each bid or division of the sewage pipeline project varied widely, which also brought security risks to the operation and management of the sewage pipeline.

(3) Material factor: Due to the long construction period of sewage pipe network, the design and construction time span of each sewage pipe network is long. In the specific design and construction process, different sewage pipe projects use various building sewage pipe materials, and some construction units even use unqualified materials or inferior materials, which reduces the integrity of sewage pipe network materials.

(4) Potential safety hazards caused by the renovation and expansion of sewage pipe network and subsequent construction: With the expansion of urban scale and the establishment of new urban areas and various development zones, the diameter of the original sewage pipe network is seriously small in some areas, and the layout of sewage pipe network must be readjusted, resulting in more and more cross access points between new and old sewage pipe networks. The access points of old and new sewage pipe networks have a long history, and the geological and underground conditions are complex, mostly near residential areas, and the problem of disturbing people by construction is prominent.

(5) Hazards of environmental and climatic factors: Sewage pipelines belong to the supporting facilities of municipal roads, which are usually built simultaneously with municipal roads, but are self-contained with the sewage pipe network system. In the sewage pipe network system (sewage branch pipe, sewage main pipe, sewage main pipe, sewage pumping station, sewage treatment plant), sewage pipes are widely divided into various sewage pipes. Because the rain and sewage pipe network has not been completely separated, there is sewage when encountering natural disasters such as earthquakes, typhoons and floods caused by heavy rains. Due to the late start of urban crisis management in China, the means are single and backward, and the task is arduous, but it is developing rapidly. The research and establishment of crisis management system has attracted the attention and input of leaders at all levels of society. In the past, the operation and management of sewage pipe network mainly focused on factories and stations (sewage plants and sewage pumping stations), ignoring the pipe network. Emergencies in factories and stations will be dealt with promptly. Once an emergency occurs in the operation of the pipe network, it is usually not handled in time. Fish death in Nanhu Lake in Nanning and cadmium pollution in Longjiang River in Liuzhou are all problems in the operation of sewage pipe network, which were not found in time and not handled correctly. Finally, it developed into a social event that aroused widespread concern in society and caused bad social impact. The current management system in mainland China is a post-event mobilization system, which highlights the lag and passivity of emergency safety management, and shows from another side that the theoretical research on emergency response in China is not deep enough. In western developed capitalist countries such as Europe, America and Japan, when dealing with sudden natural disasters and other events, people's thoughts fluctuate less and social panic is less, which shows that there are many places worth learning and studying here.

Innovative Research on Operation and Management of Sewage Pipe Network and Subsequent Construction of Sewage Pipelines

Through the investigation and analysis of the current situation of sewage pipe network operation management and sewage pipe subsequent construction safety management in China, it is very necessary to establish a set of perfect sewage pipe operation and construction safety management system in line with China's national conditions by drawing lessons from excellent sewage pipe network operation experience and sewage pipe subsequent construction experience at home and abroad.

Establishing the safety management system of urban sewage pipe network in the whole region or basin mainly depends on the long-term urban planning and the implementation plan of urban sewage pipe network. However, the accident of urban sewage pipe network safety management not only stems from urban planning and sewage pipe network implementation scheme, but also strengthens the construction and use management of the whole region or basin, which conforms to the basic principle of combining dynamic development with dynamic management and is the inevitable trend of the development and improvement of China's safety management system. In the historical process of promoting urbanization and small town construction in China, it is necessary to explore the construction of dynamic management system for sewage official website operation management from the overall situation of the whole basin or region under the macro-environment of sustainable development.

Innovation system of whole basin management for sewage pipe network operation management. The operation and management department of sewage pipe network needs to establish a safety management system of sewage pipe network with clear rights and responsibilities, and adopt the mode of government supervision and market operation. The government mainly plays the role of organizing legislation and supervision. Make full use of the technical resources of existing academic institutions and research institutes; Property management resources; Human resources of operation management department; The establishment of the whole basin or regional sewage pipe network safety survey; Sewage pipe network access; Adjustment of sewage pipe network; Management mode of adding sewage pumping station and sewage plant. At the same time, the information system and digital simulation system of sewage pipe network are established, and the dynamic simulation operation management system of sewage pipe network is established. In the formulation of water resources law and water resources protection, discharge and other laws and regulations, it is necessary to clarify the responsibility and solve the necessary expenses such as operation management, supervision and management of sewage pipe network. Such as insurance, banks and special funds. And incorporated into the legal guarantee system.

Establish an emergency plan system for safety management of sewage pipe network. In view of the unpredictability and serious consequences of sewage pipe network emergencies, it is necessary to establish a water quality monitoring system for urban rivers and lakes based on the normal operation and management of daily sewage pipe network and in order to deal with unexpected sewage discharge emergencies. Do a good job in this work and serve the implementation of Scientific Outlook on Development; Create a harmonious and safe social development environment; It is of great significance to establish an eco-city and promote the sustained, healthy and rapid development of the national economy. It is a systematic project to establish an emergency mechanism for the safe operation and management of urban sewage pipe network. It is not an isolated single work, it needs the support of laws and regulations, and it needs to be incorporated into the government administrative management system, especially into the sequence of urban public security management. It needs the extensive participation of urban residents and the mutual coordination and supervision of government departments. Dealing with and resolving emergencies smoothly is not only a test of the emergency mechanism itself, but also to eliminate the panic brought by emergencies to urban residents, which has positive social significance for creating a harmonious living environment.

Concluding remarks

The dynamic and perfect safety management system of sewage pipe network and the whole basin water quality monitoring management system are the quality and safety monitoring system to ensure the operation and management of sewage pipe network, and the transportation management system to ensure that sewage treatment meets the discharge standards. In view of the present management situation, drawing lessons from the advanced management methods of developed regions and foreign countries, and combining with China's national conditions and economic strength, a sewage pipe network safety management system and a water quality monitoring system covering the whole basin of the country to the greatest extent are established to provide legal, regulatory, technical, financial and management support for sewage safety supervision.

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