高海拔山区引水工程线路最低成本路径研究  

Research on the Least Cost Path of Water Diversion Project Route in High Altitude Mountainous Area

作　　者：童麟凯 葛莹[1] 闻平 司建强 仲炜 

机构地区：[1]河海大学地球科学与工程学院,江苏南京211100 [2]中国电力建设集团昆明勘测设计研究院有限公司,云南昆明650051

出　　处：《地理空间信息》2018年第1期61-64,共4页Geospatial Information

基　　金：国家自然科学基金资助项目(41071347);卫星测绘技术与应用国家测绘地理信息局重点实验室资助项目(KLSMTA-201302;KLSMTA-201509)

摘　　要：尝试利用GIS最低成本路径分析法研究了复杂地形下的引水工程机助选线问题。以西南某引水工程为研究案例,借鉴启发式算法的思路,根据沿线高程由高到低梯度分布的特点,构建了三维高程曲面模型。以工程成本为度量,利用DEM数据计算栅格单元成本,并求解引水工程线路最低成本路径;再以机助线路和人工线路所围成多边形的面积与人工线路长度之比作为衡量指标,评价引水工程线路最低成本路径的精度。结果表明,在加入消能站和明确限制性区域的前提下,该算法适用于引水工程线路最低成本路径的选择,具有一定的应用价值。This paper used the least cost path analysis method of GIS to study the machine-aided selection route of water diversion project in the mountainous complicated topography.Taking a water diversion project in the southwest as the study case,based on the gradient elevation distribution along water diversion route,using the heuristic algorithm,the paper constructed a 3 D elevation surface model.And then,based on the engineering cost,the paper used the DEM data to calculate the costs of raster units,and obtained the least cost path of water diversion engineering route.Finally,taking the ratio of both the area enclosed by the machine-aided and designer routes as well as the length of the designer route as the measures,this paper evaluated the accuracy of the least cost path of water diversion engineering route.The results show that this algorithm can be used for the least cost path selection of water diversion route by including the presence of energy dissipation stations and consideration of critical barriers where water diversion route intersected with the densely inhabitant area,which has to some degree practical application.

关 键 词：GIS最低成本路径分析法 三维高程曲面模型 引水工程线路 高海拔山区 

分 类 号：P208[天文地球—地图制图学与地理信息工程]