土石方动态调配模型与可视化研究

Study on the Model and Its Visualization for Dynamic Allocation of Earth

土石方调配是土石坝或堆石坝施工中的一个核心问题 ,其合理与否对降低工程造价和保证工程的顺利进行具有重要的经济、技术价值。根据其受时间 -空间影响与约束的特点 ,文章在总结现有研究成果的基础上 ,采用系统分析的手段 ,提出了一种将动态问题静态化的方法 ,并利用线性规划大M单纯形法对问题进行求解。在数学模型上 ,深入而细致地考虑了实际施工中的一些人为约束因素 ,增强了模型的通用性与灵活性 ;借助于GIS技术的强大空间信息处理功能 ,将土石方调配成果以三维动画的形式显示出来 ,以达到形象直观的目的 ;在程序实现上 ,采用强大的程序设计语言工具VC + +开发出了界面友好、操作简单、适用性强的软件。最后 ,以其在某大型土石坝工程土石方调配项目中的成功应用 。

For construction organization plan, the optimized allocation and overall balance of earth is of great significance to reduce the project cost and ensure the construction period in the construction of rock fill dam. Because of the characteristic of being influenced or constrained by time space, a new method of changing its dynamic into static is presented with the system analysis based on the exising research. Meanwhile, Linear Programming is introduced to solve the problem. In order to strengthen the commonness and agility of model, some human interventions are in an in depth and particular consideration in building the mathematics model. And then for the expression of results, Geographic Information System (GIS) is referred to demonstrate the allocation process with graph or animation to avoid its powerless expression. With the help of powerful VC++, corresponding software is drawn up, whose interface is friendly operation is easy and applicability is preferable. At last a large scale rock fill dam is illustrated. The successful application of the software to it shows the reasonability and effectiveness of the method.