DN2000 emergency reconstruction of Chang

       The DN2000 emergency pipeline on Chang 'an Road is the main outlet pipeline of Qujiang Water Works West Line. The pipeline has been laid for a long time. In order to ensure the city's safe water supply, the municipal government decided in early 2019 to renovate this section of the road, as an annual priority emergency project. The company has undertaken the emergency task-chang 'an Road (Yanzhan road-agriculture and Forestry Lane) DN2000 pipeline reconstruction project, the period from April 15 to May 13,2019 a total of 29 days. Since the project started on April 15, has been 25 days, more than 20 days, the two companies to go all out, work together to pragmatic, rigorous and efficient, hard-working style, fine arrangements, working Day and night, so far we have completed the installation of DN2000 valve and the replacement of DN1000 pipeline valve, 14 hours ahead of the original plan to complete the drainage task, 48 hours ahead of the original plan to complete part of the drainage task, fully reflects the“Dare to fight hard, can fight hard, good to fight hard” fine tradition and excellent style.

Know the difficulties and dare to attack, showing the style of responsibility

      The project has three core tasks, one is to replace the old DN1000 aging butterfly valve; The third is to replace 75 meters DN2000 concrete pipe to DN2000 ductile iron pipe. The working face of this project is located on the main traffic road in the urban area, with dense traffic and people flow, in addition, it has to stop water operation, and it coincides with the approaching of peak water supply, to ensure the city's peak water supply, the transformation project has adopted a new type of ductile iron pipe self-anchoring interface connection technology. After receiving the task, faced with tight time, heavy task, high degree of social concern, construction area constraints and other factors, the two companies rise to the challenge and actively respond. It is the first time in Xi'an that the replacement pipelines are connected by new type inner self-anchor and XT2 rubber ring flexible connection. In the face of a series of difficulties, companies planned and arranged in advance,February 12, the convening of a special project mobilization and deployment meeting, request all departments to improve the station, fully cooperate and cooperate. At the same time, a project leading group composed of leading groups was set up, and the project department, which was in its prime and had excellent performance in the past, was selected to undertake the construction management of the project, it provides manpower support for the emergency reconstruction project. In order to grasp the technical difficulties and new technological key points in the construction of DN2000 pipe inner self-anchoring and XT2 rubber ring flexible connection and ensure the smooth construction, the second company anticipates the deployment and exercises troops ahead of time, for the smooth implementation of the project to provide technical support. Due to the high degree of social concern, tight time and heavy tasks, as well as the large diameter of the pipe and the complex restriction conditions of the construction area, the two companies carried out on-site investigation many times in the early stage of the construction, they also took the initiative to coordinate with the relevant departments of the water supply company to carry out a survey of the outgoing pipes of the west line of the Qujiang Water Works. They actively cooperated with the relevant departments of the water department in preparing construction plans, traffic diversion plans and handling construction preparation procedures, and many times discuss the revision consummation, has guaranteed the project the smooth construction to provide the scientific construction plan.

Strengthen the management of construction site, highlight the style for the people

      According to the construction plan, from April 26 to May 1 to the surrounding area of water for five days, including: replacement of DN1000 aging valve took two days to ensure the Zhangba Road and the surrounding users of water supply; Add DN2000 electric valve, adjust the location of the new sludge discharge period of 3 days. In order to make efforts to provide water as soon as possible and ensure the use of water by the surrounding residents, the two companies have held many safety and technology meetings with the designers, supervisors and builders, and after consultation and calculation by various parties, the leader of the Technical Director of the second company put forward the new idea of welding short pipe drilling holes on the original DN2000 steel pipe first, and then adding two pipeline pressure pumps to pump water when the pipe is draining, which was approved by many parties, the adoption of this measure, through a well-coordinated, round-the-clock, 24-hour commitment by the project manager, resulted in the completion of the drainage task 12 hours earlier than the original design, peripheral citizens 48 hours ahead of normal use of the clean sweet tap water! In order to ensure the material follow-up of this project, the Materials Department of the second company has made a reverse list of material order and arrival time in advance, aiming at the situation that the construction site is under heavy traffic pressure, and the site does not have the conditions for stacking pipes, second, the Materials Department of the company manned the site and kept a close eye on the construction progress, ensuring that materials entered the site in an orderly manner and on demand, ensuring that the construction materials were in place in time without increasing the material stacking, it provides guarantee for the project to be completed in an orderly manner and on schedule. In line with the construction concept of safety first and quality first, the two companies adhere to the safety work“One post, two responsibilities”, the party and government work together, multi-level linkage, detailed responsibility, project progress so far, insisting on taking turns on-site duty round-the-clock under the leadership of the team, and security personnel patrolling the site 24 hours a day, constantly strengthening safety management and deepening supervision of the cooperative construction teams have laid a solid safety foundation for the construction of the project.

      Party members and cadres march in unison to demonstrate the style of the Iron Army，In order to complete the construction task on schedule with quality and quantity, the party branch of the second company gave full play to the leading role of the party members. The team members actively practiced the“First-line working method”, and the team members took turns to stay at the construction site, command ahead to ensure the safe and effective implementation of construction tasks.