摘要
数字地面模型(DTM)已广泛应用于工程各领域,特别在道路设计方面,但其精度有待探讨.通过实际工程,总结了DTM再道路设计中的应用,并应用不同的方案建立DTM,获取路线设计所需的纵、横地面数据,计算路基土石方数量,对比分析得出其精度尚不能满足道路施工图设计的要求,误差属于稳定的系统误差.并分析了其精度的影响因素,提出相应的措施.
With the extensive application of DTM to various fields especially to road design, question still re-mains as to its precision. Based on practical projects, a comprehensive account of DTM＇s application is offered. DTM is then sot up with disparate schemes so as to obtain data of vertical and horizontal transection of a road and to calculate soil - stone amount of the roadbed. It is shown through a comparison analysis that the precision af- fected by systematic errors does not meet the needs set in the drawing design. The factors affecting precision are then analyzed. Countermeasures are finally put forward.
出处
《昆明理工大学学报（理工版）》
2008年第3期62-65,共4页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
交通部西部交通科技课题,学生校外科技(项目编号:20070029)
云南省自然科学基金(项目编号:2005D0016M)
