共和至玉树公路多年冻土地温拟合模型  

Permafrost Ground Temperature Fitting Model of Gonghe-Yushu Highway

作　　者：刘德平[1,2] 汪双杰[2] 金龙[2] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 [2]中交第一公路勘察设计研究院有限公司,陕西西安710068

出　　处：《中国公路学报》2015年第12期100-105,共6页China Journal of Highway and Transport

基　　金："十二五"国家科技支撑计划项目(2014BAG05B01;2014BAG05B03);交通运输部建设科技项目(2012 319 495 030);多年冻土地区公路建设与养护技术交通行业重点实验室青海研究观测基地开放基金项目

摘　　要：为了充分了解共和至玉树公路(简称共玉公路)沿线的多年冻土地温分布情况,为多年冻土地温预测提供必要的理论支撑,根据共玉公路及国道G214线地温监测资料,应用地温波动理论对共玉公路沿线多年冻土地温采用非线性拟合算法进行地温曲线拟合,得到其不同分区的地温曲线拟合预测模型,并根据此预测模型对沿线多年冻土地温进行了预测计算。研究结果表明:理论地温剖面曲线与该地区实测地温剖面曲线形态基本相似,地温随深度变化趋势基本一致,稳定地温理论值与实测值基本相同,稳定地温深度也基本一致;用提出的地温拟合预测模型进行地温断面曲线预测效果较好。To fully understand the permafrost temperature distribution along the Gonghe-Yushu Highway,and provide necessary theoretical support for ground temperature prediction in permafrost regions,according to the ground temperature monitoring data of Gonghe-Yushu Highway and National Road G214,based on the theory of ground temperature fluctuation,the non-linear fitting method was used for ground temperature curve fitting.Temperature curve fitting prediction model of different partition of ground temperature of Gonghe-Yushu Highway was obtained.The temperature prediction calculation of frozen soil along the Gonghe-Yushu Highway was carried out according to the prediction model.The results show that the theoretical ground temperature profile curve is similar to the measured temperature profile in the region.The variation trend of temperature with depth is basically the same.The theoretical value of stable temperature is basically the same as the measured value.The stable ground temperature depth is also basically the same.In general,the proposed fitting prediction model of the ground temperature has better effects to predict the ground temperature profile curve.

关 键 词：道路工程 冻土地温 非线性拟合 预测模型 共玉公路 

分 类 号：U419.92[交通运输工程—道路与铁道工程]