分析了大修管道土方施工过程, 研究了其仿真方法。用C＋＋语言在Borland C＋＋ Builder4平台上编制了埋地长输管道 开挖土方施工仿真软件,软件通过运行方式、工况、大修顺序的组合模拟各种土方施工情况, 可以判断管道是否安全,确定局部最大修复长度,优化开挖方案,优化支撑机具的最佳位置, 对重埋后的管道做整体评价等。%The process of earthwork for pipeline is analyzed and the method of emulation is given．The software，emulation of earthwork for pipeline，is written with Borland C＋＋ Builder 4．The earthwork for pipeline is emulated through combination of runway，work condition and work sequence，meanwhile security of pipeline can be judged，maximum local repair length of pipeline can be computed，excavation plan of pipeline can be made，position of supporting tool can be optimized，assessing of the whole reburied pipeline can be made
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