摘要
由于为弃土场提供的设计资料相对稀缺和滞后,在项目前期的弃土场设计方案往往仅局限于路线地形图范围,而缺乏在大区域内进行弃土场比选的设计条件,可能致使弃土场后期方案不尽合理。结合Ovital地理信息,在前期设计方案基础上综合考虑沟型地貌、地物、植被概况、汇水区域、沟底纵坡、上路运距等,给出了4种沟型选址示例,分析了弃土场放坡位置、沟底缓坡长度和设置土坝对弃土场稳定性的影响,并应用灰度理论得出了弃土场稳定性受各因素影响的敏感性大小,即土坝体积>沟底缓坡长度,为类似山区弃土场设计提供了参考。
In view of the relative incomplete and lag of design data provided for the spoil ground,the design scheme of the spoil ground in the early stage of the project is often limited to the area within the scope of the route topographic map,and there is a lack of design conditions for the comparison and selection of the spoil ground in a large area,which may make the later scheme of the spoil ground unreasonable.In the paper,combined with the geographic information of Ovital,the ditch type landform,ground features,vegetation overview,catchment area,longitudinal slope at the bottom of the ditch,road haul distance,etc.are comprehensively considered in the early design scheme,four examples of ditch type site selection are presented,and the influence of the sloping position of the spoil ground,the length of gentle slope at the bottom of the ditch and the setting of earth dam on the stability of the spoil ground are analyzed.The sensitivity of the stability of the spoil ground to various factors is obtained by using the gray theory:the volume of the earth damthe length of the gentle slope at the bottom of the ditch,which provides a reference for the design of the spoil ground in similar mountainous areas.
作者
王旭辉
于军
WANG Xu-hui;YU Jun(CCCC First Highway Consultants Co.Ltd.,Xi'an 710075,China)
出处
《公路》
北大核心
2023年第7期239-245,共7页
Highway
关键词
高速公路
弃土场设计
地理信息
稳定性评价
方案比选
expressway
design of spoil ground
geographic information
stability evaluation
alternatives comparison and selection
