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Trial water work summary



Shanxi Wanjiazhai Yellow River Diversion Project

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Shanxi Wanjiazhai Yellow River Diversion Project Corporation Ningwu Branch

December 2001
Shanxi Wanjiazhai Yellow River Diversion Project
Trial water work summary

XX years is the tough year for the construction of the Yellow River Diversion Project. In order to ensure the realization of the strategic goal of water supply to the Weihe Reservoir during the year, according to the spirit of the XX Annual Working Conference of the Yellow River Diversion Project from March 13 to 14, Director Wang Xinyi’s "Continuous efforts, full efforts to tackle the difficulties, strive to achieve the goal of water supply to the Weihe Reservoir" and Deputy Director Wang Bisheng "Do a good job in the various tasks of the meeting, to ensure that the goals are on schedule" The milestone date of the project image progress requirements in the book, Ningwu Branch carefully reviewed and summarized the successful experience gained in the past year, arranged and deployed this year's project construction tasks, and formulated the “Ningwu Branch to achieve XX year trial water supply”. Work Focus, implement the task level and put forward specific implementation measures, thus successfully completing the construction tasks and various tasks arranged by the responsibility book and work conference. The following is a summary of the main work of the branch trial water supply as follows:
I. Optimizing the construction of the main project II. Handling the defects of the quality of the tested water. 3. Acceptance of the project According to the relevant regulations of the People's Republic of China industry standard “Construction and Acceptance Regulations for Water Conservancy and Hydropower Construction Projects”, pass the water acceptance test and check the water delivery. Problems in the design and construction of buildings, electromechanical equipment manufacturing and installation, etc., to find problems in a timely and early processing, in order to create the necessary conditions for the subsequent installation, commissioning and formal water-passing operation of the next year. The area under the jurisdiction of Ningwu Branch is mainly the International II and III standards for the Nangan Civil Engineering Project of the Yellow River Diversion Project. Due to the different understandings of Chinese norms and contracts by foreign contractors and owners, the acceptance of the international II and III standard projects has been delayed.
1. The contractual basis for the acceptance of the international II and III standard projects According to the technical specifications of the contract archives P1.20.1 After the completion of the Nangan project, the owner will carry out the unit project acceptance and completion acceptance according to the Chinese industry standard SDJ275-88 "Hydris Power Station Capital Construction Project Acceptance Regulations". . The contractor shall participate in these acceptances and submit the information in accordance with the relevant provisions of SDJ275-88. At the same time, according to the requirements of Shui Guoke [1999] No. 118, the original “Regulations for the Acceptance of Basic Construction Projects of Hydropower Stations” ceased to be used in the water conservancy industry. From April 1, 1999, the “Regulations for the Acceptance of Water Conservancy and Hydropower Construction Projects” was implemented. The transfer of the project is in accordance with Section 48 of the General Conditions of the Contract.
2. The contract handling of the acceptance inspection centered on the project acceptance. The Ningwu branch began preparations in June of XX. With the support of the leadership of the bureau, it organized the relevant departments of the head office, China Water Conservancy and Hydropower Construction Engineering Consulting Beijing Company. The provincial water conservancy project quality supervision station and the relevant personnel of the Tianjin Design Institute held a preliminary meeting on the T4 acceptance at the meeting in Ningwu. The meeting clarified the nature, basis and standards of the acceptance and the procedures to be improved. At the same time, the collection and arrangement of the data Specific requirements have been put forward. Ningwu Branch has done a lot of work according to the principles determined by the meeting, the “Regulations on the Acceptance of Water Conservancy and Hydropower Construction Projects” and the relevant provisions of the contract technical specification P1.20.1.
1 In view of the early completion of T4, the branch company wants to use the T4 project acceptance as a breakthrough for the entire international II and III acceptance, summarizing the experience and forming a fixed model to finalize the program to be executed in the remaining project acceptance.
2 In the negotiation process, the contractor believes that the newly promulgated Chinese industry standard “Water Conservancy and Hydropower Construction Project Acceptance Regulations SL223-1999” is a contract for the acceptance of the “Construction Regulations for Hydropower Station Capital Construction Project SDJ275-88” as stipulated in P1.20.1. The change is a follow-up legislation, and the contractor will carry out the relevant work after the clarification of the cost compensation issue caused by the change. In view of this, the owner believes that due to the different understanding of the Chinese acceptance specifications by the owners and contractors, it is understandable that there are differences in the actual operation process. First of all, whether the new norm or the old norm has the acceptance of the divisional project, only the old norm is the quality visa carried out during the daily construction process. Due to the special nature of the TBM construction, the work cannot be completed during the construction process, but now the The acceptance of the project is to improve the work that has not been completed before. Secondly, the contractor believes that the new norm is a change to the old norm. The contractor compares how much the new contract has increased compared with the old one. The owner believes that the branch The new and old specifications for project acceptance are the same and do not constitute a change. The post contractor acknowledged this.
3 Based on the above, the owner also organized engineers and contractors to exchange views and reach consensus on project division, acceptance procedures and organization, acceptance and submission of materials, and information for reference. Namely: (1) Project division: The contractual parties agree to the project division and opinions determined by the engineer on the international II and III standard projects; (2) Acceptance procedures and organization: Wanlong agrees with the owner's acceptance program according to SL223-1999 “Construction and Acceptance Procedures for Water Conservancy and Hydropower Construction Projects” And opinions. The acceptance visa for the sub-project is organized by the engineer. After the completion of the full-part project acceptance visa for a unit project, the owner organizes an acceptance visa for all parts of a unit project; (3) Data preparation: Wanlong agrees to follow SL223- The relevant provisions of the 1999 "Regulations for the Acceptance of Water Conservancy and Hydropower Construction Projects" are prepared to meet the relevant information for the acceptance of the divisional projects. At the same time, Wan Long said that the relevant matters concerning the acceptance of the branch project will be carried out as soon as possible to prepare relevant information.
4 In view of the international II and III standards, there is controversy over the installation of the segment and the contract standard for the backfilling of the bean gravel. In order to ensure the smooth progress of the acceptance of the segment project, the owner organizes the engineers and contractors to conduct statistical analysis and divisional engineering on the self-inspection data of the contractor. The adjustments to the division were discussed and agreed. That is, the statistical range of the joint of the segment is less than or equal to 5 mm; greater than 5 mm, less than or equal to 10 mm; greater than 10 mm, less than or equal to 15 mm and greater than 15 mm. The statistical range of the tube misalignment is less than or equal to 5 mm; greater than 5 mm, less than or equal to 10 mm and greater than 10 mm. The statistical range of backfill grouting of bean gravel is: less than or equal to 10Mpa; greater than 10Mpa, less than or equal to 15Mpa, greater than 15 Mpa, less than 20 Mpa and greater than or equal to 20 Mpa.
After 5, the contractor requested that the project acceptance and project handover be combined. At the same time, if the engineer did not issue the completion certificate, Wanlong would not participate in the acceptance. The T4 branch project acceptance work scheduled to be held on June 11 was deadlocked. The branch also organized engineers and Wanlong to discuss the program issues of acceptance and handover. According to the contract, the Chinese acceptance specification and the relevant recommendations of the DRB ninth site inspection report, the branch detailed the owner's basic views on project acceptance and handover. After arduous negotiations, the following preliminary opinions were reached on the project acceptance and handover procedures: The engineer confirms the quality of the project, existing problems, etc. according to the contract, specification, design, etc., and issues the branch project acceptance certificate; 2 after the completion of all the division project acceptance visa of a unit project, the engineer issues the unit project. The basic completion certificate; 3 after the completion of the acceptance of all the units of a tender, the engineer issues a handover certificate.
On June 11, XX, the international II and III standard division project acceptance was started on time according to the original plan.
3. Engineering Acceptance Organization and Principles In order to ensure the smooth progress of inspection and acceptance of the division project, Ningwu Branch has set up a branch project acceptance work group for this purpose. The director personally serves as the team leader.

, comprehensively guide, supervise and inspect the inspection and acceptance of the branch project, and be responsible for major issues and consultations with relevant parties. The deputy director in charge is responsible for the organization, logistics support and design communication of daily branch project acceptance, and reports to the team leader according to the progress of the project's acceptance and needs to be resolved by the team leader. At the same time, the principle of acceptance of the divisional project has been formulated, namely: 1 117 divisional division projects in the area under the jurisdiction of Ningwu, and the acceptance of all parts of the project must be completed before the trial of water; 2According to the actual progress of the contract period and the project The situation, the division project acceptance work was officially started on June 11th, and the acceptance work was completed before October 12, XX; 3 later, in view of the contractor not signing the division project acceptance certificate, learning from the domestic same type of international standard acceptance experience, The division project acceptance shall be confirmed by the engineer organization owner and other relevant units according to the contract, design files and specifications, and the quality and existing problems of the completed project shall be confirmed to form a sub-project acceptance certificate, and the quality defects promised by the contractor shall be contracted. The responsible person shall be responsible for the dispute. The responsible party shall be responsible for the dispute. The engineer shall issue the branch engineering quality certificate to the contractor, and the contractor shall give feedback on the quality visa certificate as the auxiliary file of the branch project acceptance visa. At the same time, taking into account the needs of unit projects and completion acceptance, the provincial water conservancy project quality supervision station and the owner's personnel who participated in the division project acceptance signed the sub-project acceptance certificate.
With the strong support of the water transport building group, in accordance with the above principles, the inspection and acceptance of the branch projects in the jurisdiction of the Ningwu branch were completed according to the scheduled timetable, laying a solid foundation for the trial of water.
4. Cooperated with the head office for technical preliminary acceptance and expert consultation and acceptance. On November 4-9, XX, the branch completed the preliminary technical acceptance and expert consultation and acceptance with the head office. After on-site inspection and inspection of relevant raw materials. Experts agree that after the part of the cave is floating and the debris is cleaned up, the dog's cockroach is blocked and the channel is closed. The necessary water strength test can be tested and installed.
IV. Preparation for the trial of water agreement. Preparation for the water-passing ceremony of the first horse camp. According to the rules of the head office meeting on November 11 and November 16, and the spirit of the notice on November 18, the Ningwu branch will guarantee the test. The water celebration activities proceeded smoothly. All the work was carried out in accordance with the rules. The responsibility was given to the people. The Ningwu branch set up a trial water supply to the Luohe ceremony organization and set up a conference group, logistics group, on-site group, and building safety. Working groups such as the Water Level Observation Group, the specific responsibilities are:
Conference Group: Responsible for the driving safety of the VIP team in Ningwu; responsible for the comprehensive coordination of the celebration activities, security and coordination, and coordination and liaison of local relations.
Logistics group: Responsible for the regional layout of the branch office;
On-site group: Responsible for the site layout and management of the head camp.
Building Safety and Water Level Observation Group: Responsible for the safety and rescue work of buildings during the water test; responsible for the water level measurement, data analysis and rapid information transmission of each water level observation point; responsible for the 24-hour duty work during the trial water passage; Flood control motor hoist installation and other work.
In order to ensure the smooth running of the trial water to the Luohe ceremony, the branch leaders personally went to the site of the first camp to conduct detailed surveys on the site layout, drawn the layout plan and designated the responsible person and implementer for each work.
At the same time, during the trial of water supply, Ningwu Branch established the “Ningwu Water Delivery Building Group” and formulated the “Running Water Operation Plan for the First Phase of Wanjiazhai Yellow River Diversion Project in Shanxi Province” and put forward specific requirements. :1 Before the test of water, the water-conducting buildings in the area under the jurisdiction of Ningwu Branch stopped all production activities, and all equipment, materials and personnel unrelated to the test water in the cave were all withdrawn to ensure the safety of the test water; The block diagram of the on-site dispatch relationship during the trial of water flow; 3 24-hour duty during the trial water flow, in order to timely inspect and master the building operation status and the water level change of each water level observation point, and follow the path determined by the on-site dispatch relationship block diagram. Reporting; 4 Each water level observation point is on duty 24 hours during the test water flow. When the water level is changed, the record is recorded every 10 minutes. When the water level is stable, record every 30 minutes. Each water level observation point reports the water arrival time, water flow changes, etc. to the duty room in time; 5 prepares the rescue personnel and materials and accepts the direct command and transfer of the Ningwu water transport building group to ensure the safety of the building during the trial of water supply. ; 6 set up safety signs for the branch hole, repair the lower lane entrance and other places and arrange the relevant personnel to be on duty to ensure the safety of people's lives.
In short, in the past year, Ningwu Branch has overcome many difficulties. Under the correct leadership of the head office, the branch leaders and employees have performed their duties under the cooperation of design, construction, supervision and consulting personnel. Struggling, struggling, and successfully completed the various construction tasks stipulated in the annual plan and the responsibility book, achieving a win-win situation with both progress and quality.
First of all, the Ningwu branch has taken care of the overall situation and is united in the fight for the completion of the various construction tasks stipulated in this year's annual plan and responsibility book. Everyone understands that the Yellow River Diversion Project is a life project related to Shanxi's economic and social development. It is to achieve the strategic goal of water supply to the Weihe Reservoir in XX and the water supply to Taiyuan in XX. All the leaders and employees of Ningwu Branch will work together. As the vocation of time, we will take every effort to ensure quality as our mission. In particular, the Ningwu branch is facing international contractors, implementing the FIDIC contract terms. In the face of many uncertain factors such as contract duration and contract disputes, the branch leaders and employees actively research contracts, work together, and engineers. The contractor further optimized the construction organization design. On April 15, XX, the excavation and lining task of the 11.4 km tunnel was completed. The annual plan was completed 1.5 months ahead of schedule. The civil works were completed on October 25, and the test was completed. Water conditions.
Secondly, relying on the wind of the “one hundred days to attack the hardship” of the Authority, it is an innovative work style. In the “100-day attack” stage, all the leaders and employees of the branch voluntarily gave up the rest time of the holidays, conducted a comprehensive and serious analysis of the original work systems, regulations and requirements, and proposed solutions to existing problems in a targeted manner. Advance the orderly and smooth development of the various tasks of the branch. The specific performance of the leading cadres went deep into the construction site, on-site command, overall planning, organization and coordination, rapid response, even if the problems occurred during the construction process were resolved, the annual task was successfully completed.
Second, the support of the leadership of the Authority is the propellant to complete the annual mission. The leaders of the Administration, especially the Deputy Director Zhu Chunyao, often go to the leadership and business departments of the construction site and branch offices to put forward many guiding opinions on the progress, quality, defect handling and project acceptance of the project, and play an active role in promoting the annual task.
Finally, further strengthen the study of political theory and give full play to the role of the party and government work groups. Party branches of the branch often organize party members, members and the public to study political theory, especially Comrade Jiang Zemin’s "three represents", "July 1 speech" and the speeches of the leaders of the Authority, and arrange for study. The majority of leaders and employees recognize The situation, clear responsibility, and hard work have played a role of promotion and guarantee.

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