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指出了工程建设计划管理中常用的横道图法和关键路径法的优缺点。以广州市环卫行业发展计划和大坦沙垃圾焚烧厂的建设为例，运用计划评审技术（PERT），在确定关键工程和关键工序的同时，用概率论和数理统计方法计算出不同时限下完成计划的概率，为发展计划的制定和工程建设进程的管理提供了科学依据。
Points out the advantages and disadvantages of the crossbar diagram method and the critical path method commonly used in project construction planning management. Taking the construction of the Guangzhou Sanitation Industry Development Plan and the Datang Waste Incineration Plant as an example, using the PERT technology to determine key projects and key processes, and using probabilistic and mathematical statistical methods to calculate the completion of different time limits The probability of the plan provides a scientific basis for the formulation of the development plan and the management of the project construction process.