| 基于困难度指数的中国公路地貌区划 |
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| 引用本文： | 齐洪亮,田伟平,张小荣.基于困难度指数的中国公路地貌区划[J].长安大学学报(自然科学版),2011(1):40-45. |
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| 作者姓名： | 齐洪亮 田伟平 张小荣 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室; |
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| 基金项目： | 国家西部交通建设科技项目(200331881236) |
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| 摘 要： | 为了研究公路地貌的分异规律,根据公路地貌区划的原则和方法,选择大地构造、地面自然坡度等作为中国公路地貌一级区划的主要指标,将中国分为5个地貌一级区;选择困难度指数作为中国公路地貌二级区划的主导指标,以海拔高程、地面自然坡度、地表破碎程度、地层岩性和植被类型作为主要影响因素,建立了困难度指数计算模型。结合公路工程实际,建立了影响因素等级划分体系和影响度值;采用专家打分的方法,确定各影响因素的权重值;利用地理信息系统(GIS)计算了困难度指数,并建立了困难度指数等级划分体系。在中国公路地貌一级区划的基础上,按困难度指数将全国分为42个公路地貌二级区。
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| 关 键 词： | 道路工程 公路 地貌区划 GIS 困难度指数 |
Landform regionalization for highway in China based on difficulty index |
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| QI Hong-liang,TIAN Wei-ping,ZHANG Xiao-rong.Landform regionalization for highway in China based on difficulty index[J].JOurnal of Chang’an University:Natural Science Edition,2011(1):40-45. |
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| Authors: | QI Hong-liang TIAN Wei-ping ZHANG Xiao-rong |
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| Institution: | QI Hong-liang,TIAN Wei-ping,ZHANG Xiao-rong(Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,Shaanxi,China) |
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| Abstract: | In order to study the differentiation regularity of highway landform,according to the principles and methods of regionalization,the tectonic and slope were selected as the main index of first-order of landform regionalization for highway in China,and China was divided into 5 first-order landform districts.The difficulty index was selected as the leading index of second-order of landform regionalization.The calculated models for difficulty index was built based on the main influencing factors like altitude,s... |
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| Keywords: | road engineering highway landform regionalization GIS difficulty index |
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