Study On Schedule Management Of A Water Conservancy Construction Project For The High Standard Farmland

The construction of high-standard farmland is a key measure to consolidate and improve grain production capacity and ensure national food security,and the implementation of high-standard farmland construction is the key to move from traditional agriculture to modern agriculture,and is a strategic measure for the leapfrog development of rural economy.In recent years,BX County has earnestly implemented the rural revitalization strategy,vigorously promoted the construction of high-standard farmland in accordance with the requirements of high-quality agricultural development,and provided a solid foundation for ensuring national food security.This paper focuses on the high-standard farmland water conservancy construction in the south and north of LY Town in BX County(hereinafter referred to as the A high-standard farmland water conservancy construction project),that is,taking the A high-standard farmland water conservancy construction project as the research object,under the circumstance that the construction start date of the project area is delayed,and the overall construction of the project has the risk of delay and resource constraints.In this paper,the key chain method is used to re-set and optimize the progress plan of the south and North projects,and the application range of the key chain method is enriched.This paper first analyzes the research results of key chain technology at home and abroad in recent years.On the basis of in-depth analysis of schedule management theory and key chain technology,combined with the specific construction situation of A high-standard farmland water conservancy construction project,the construction process of the project in the south and north areas is broken down by WBS,and the logical relationship between each construction process is determined.The three-point estimation method was used to calculate the time of each construction process,and the double-code network diagram of the project in the south and north areas was drawn respectively.By calculating the time parameters of each link in the double-code network diagram in the south and north areas,the task with a total time difference of zero,that is,the key task of the project in the south and north areas,was searched to determine the critical path and the total duration of the critical path.Due to factors such as the COVID-19 epidemic and construction expenses,the construction team in the northern area withdrew,and the southern and northern project areas were uniformly contracted by one construction team for collaborative management.Resources,especially human resources,in the project area were re-optimized based on comprehensive consideration of resource constraints in the project area,and based on this,the construction start time of resource conflict processes in the southern and northern project areas was compared and analyzed.Accordingly,the start construction time of the process with resource conflict on the non-critical path was adjusted,so as to obtain the key chain of the southern and northern project areas under the resource buffer,and the implementation of the project schedule was supervised and controlled,and the deviation was corrected in time.On the basis of the construction estimated time based on the three-point estimation method,the size of the buffer zone of the project area is calculated in combination with the construction characteristics of the south and north project areas.The construction situation of the buffer zone is monitored and managed in real time through the three-color management method,the reasons for the delay of key tasks are analyzed in time,and the corresponding safeguard measures are taken for the timely completion of the project schedule.Finally,the south and north project areas were completed and accepted in advance.By combining the key chain technology with the high-standard farmland water conservancy construction project in the south and north of LY town in BX County,this paper studies a schedule management process that is applicable to the high-standard farmland water conservancy construction project,which is helpful to the construction schedule management of this project and also has a certain reference role for other related water conservancy construction.