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冰川冻土 ›› 2018, Vol. 40 ›› Issue (4): 773-783.doi: 10.7522/j.issn.1000-0240.2018.0083

• 寒区科学与技术 • 上一篇    下一篇

中巴经济走廊泥石流活动性分析——以中巴公路奥布段为例

罗文功1,2, 魏学利2,3, 陈宝成2, 李伟1,2, 李宾2, 谢永利3   

  1. 1. 新疆大学 建筑工程学院, 新疆 乌鲁木齐 830046;
    2. 新疆维吾尔自治区交通规划勘察设计研究院, 新疆 乌鲁木齐 830006;
    3. 长安大学 公路学院, 陕西 西安 710064
  • 收稿日期:2017-11-07 修回日期:2018-03-13 出版日期:2018-08-25 发布日期:2018-10-08
  • 通讯作者: 魏学利,E-mail:weixl8115@126.com. E-mail:weixl8115@126.com
  • 作者简介:罗文功(1993-),男,河南开封人,2016年在新疆大学获学士学位,现为新疆大学在读硕士研究生,从事公路泥石流形成机理及防治研究.E-mail:lwg01051116@126.com
  • 基金资助:
    国家自然科学基金项目(41602331);中国沙漠气象科学研究基金项目(Sqj2015015);中国博士后基金项目(2016M60 2951XB);新疆科技厅科技项目(2015-2017)资助

Analysis of debris flow damage along the China-Pakistan Economic Corridor: taking Aoyitake-Bulunkou Section of the Sino-Pakistan Highway as a case

LUO Wengong1,2, WEI Xueli2,3, CHEN Baocheng2, LI Wei1,2, LI Bin2, XIE Yongli3   

  1. 1. School of Civil Engineering and Architecture, Xinjiang University, Ürümqi 830046, China;
    2. Xinjiang Academy of Transportation Planning, Surveying and Design, Ürümqi 830006, China;
    3. School of Highway, Chang'an University, Xi'an 710064, China
  • Received:2017-11-07 Revised:2018-03-13 Online:2018-08-25 Published:2018-10-08

摘要: 中巴经济走廊内的中巴公路奥布段泥石流频发且类型复杂,严重影响着安全出行和贸易流通。在对中巴公路奥布段沿线泥石流沟谷纵剖面形态分析的基础上,揭示其形态指数特征和活动程度,并从区域地形、地质和气象等因素方面探讨了泥石流的活动性差异成因及危害性。研究发现:公路沿线泥石流类型主要包括冰川型和降雨型两种,冰川型泥石流为27条,降雨型为26条。冰川型泥石流活动性强烈,形态指数N ≥ 1的沟谷占冰川型沟谷总数的81%,多数沟谷形态呈下凹状;降雨型泥石流活动性相对较弱,形态指数N ≥ 1的沟谷占其总数的50%,沟谷形态多呈上凸状。研究区大落差地形、不同物源供给和充沛水源条件等对泥石流的发育和活动具有重要影响,也是不同类型泥石流活动性差异的控制因素。研究结果可为研究区泥石流预测和防治提供指导,也可为中巴经济走廊区内交通工程选线和泥石流防治提供参考。

关键词: 中巴经济走廊, 中巴公路, 泥石流, 剖面形态, 活动性

Abstract: Debris flows along the Sino-Pakistan Highway have developed with various types and seriously affected the tourism and trade through the China-Pakistan Economic Corridor. Based on morphological features of debris flow gully profiles along the highway, in this paper, the morphological characteristics and activity level of debris flows has been revealed, the causes and hazards of debris flows have been discussed from regional geology, topography, meteorological factors and so on. It is found that the major types of debris flow along Aoyitake-Bulunkou Section of the Sino-Pakistan Highway can be divided into rainfall type (26 gullies) and glacial type (27 gullies). Glacial type debris flow has powerful activity, i.e., the ratio of glacial debris flow shape index N ≥ 1 accounting for 81% of the total glacier gullies, and most of them being concave parabolas; rainfall type debris flow has less activity, i.e., the ratio of rainfall debris flow shape index N ≥ 1 accounting for 50% of the total glacier gullies, and most gullies shapes being convex parabolas. A large fall, rich material supply and plenty of water supply have significant influence on the development and activity of debris flows and they are also controlling factors for the difference in activity among various types of debris flows. The research results would be useful for debris flow forecast and control along the highway in the China-Pakistan Economic Corridor and be helpful for traffic engineering route selection and debris flow control.

Key words: China-Pakistan Economic Corridor, Sino-Pakistan Highway, debris flow, profile shape, activity

中图分类号: 

  • P642.23