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中国沙漠 ›› 2016, Vol. 36 ›› Issue (5): 1216-1222.DOI: 10.7522/j.issn.1000-694X.2015.00148

• 沙漠与沙漠化 • 上一篇    下一篇

青藏铁路北麓河路段风沙防护体系阻沙效益

张克存, 安志山, 庞营军, 蔡迪文   

  1. 中国科学院寒区旱区环境与工程研究所 敦煌戈壁荒漠生态与环境研究站/沙漠与沙漠化重点实验室, 甘肃 兰州 730000
  • 收稿日期:2015-06-01 修回日期:2015-06-23 出版日期:2016-09-20 发布日期:2016-09-20
  • 作者简介:张克存(1978-),男,甘肃民勤人,理学博士,研究员,主要从事铁路风沙灾害及其防治研究。E-mail:kecunzh@lzb.ac.cn
  • 基金资助:
    国家重点基础研究发展计划项目(2012CB026105);国家自然科学基金项目(41371027);中国科学院青-创新促进会项目(2014382)

Benefit of Wind-Blown Sand Prevention System in the Beiluhe Section of the Qinghai-Tibet Railway

Zhang Kecun, An Zhishan, Pang Yingjun, Cai Diwen   

  1. Dunhuang Gobi and Desert Ecology and Environment Research Station/Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2015-06-01 Revised:2015-06-23 Online:2016-09-20 Published:2016-09-20

摘要: 在分析青藏铁路北麓河路段风沙灾害现状和风沙环境的基础上,将三维激光扫描技术应用于风沙工程防护体系的效益评价中,利用Leica C10三维激光扫描仪精确测量青藏铁路两侧典型防沙措施及防护体系积沙形态特征和风沙堆积量,评估防护效益。百叶窗条形阻沙栅栏单宽积沙体积最大,为18.31 m3,其次为不通风条形阻沙栅栏,单宽积沙体积为13.66 m3。阻沙栅栏最大防护距离为12 H,即上风向-3~0 H范围和下风向0~9 H范围内,双排结构的阻沙栅栏无论积沙范围或积沙量均较单排结构阻沙栅栏好。在栅栏上风向,沙粒自距栅栏5 m处开始沉降堆积,越靠近栅栏,积沙厚度越大。在阻沙栅栏的下风向,单排结构阻沙栅栏积沙范围为15 m,双排结构阻沙栅栏积沙范围可达20 m。

关键词: 青藏铁路, 三维激光扫描仪, 风沙灾害, 防护效益

Abstract: 3 D laser scanning technique was used to evaluate the benefit of wind-blown sand prevention system in the Beiluhe section of the Qinghai-Tibet Railway. Morphological characteristics of sand-accumulation, wind erosion and deposition profiles of typical sand-control methods were measured accurately by the 3D Leica Scanner. Based on the present situation of sand damages, aeolian environment and the data from 3D Leica Scanner in the field, this paper aims to analyses the sand-defensive benefit of wind-blown sand prevention system in the Beiluhe Section of the Qinghai-Tibet Railway. The objective of this study is to provide technical support to the selection of sand-control measures, structure optimization and rational distribution of the integrative sand drift control system.

Key words: Qinghai-Tibet Railway, 3D Leica Scanner, sand damages, protective benefit

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