资源与产业 ›› 2009, Vol. 11 ›› Issue (2): 132-139.

• 问题研究 • 上一篇    下一篇

藏东南地区滑坡发育规律分析

郭佳宁山克强,程 捷*

  

  1. (中国地质大学 地球科学与资源学院,北京 100083)

  • 收稿日期:2009-01-08 修回日期:2009-02-20 出版日期:2009-05-06 发布日期:2009-04-20
  • 通讯作者: 程捷(1963— ),男,教授,主要从事第四纪地质及古脊椎动物研究与教学。E-mail: chgj@cugb.edu.cn
  • 作者简介:郭佳宁(1982— ),女,硕士生,主要从事第四纪环境研究。E-mail: guojianing.gr@163.com

STUDY ON LANDSLIDE DEVELOPMENT REGULARITY IN SOUTHEAST TIBET

GUO Jia-ning, SHAN Ke-qiang, CHENG Jie*

  

  1. (School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China)

  • Received:2009-01-08 Revised:2009-02-20 Online:2009-05-06 Published:2009-04-20

摘要:

藏东南峡谷深切、山势险峻,是一个滑坡等地质灾害多发地区。本文通过对该区滑坡时空分布规律的分析,探讨了滑坡与地形地貌、地层岩性、地质构造、降水等因素的关系。藏东南地区滑坡主要发生在每年5—9月的雨季,尤以6月最为集中;砂岩、页岩、泥岩以及活动断裂发育区滑坡发生的频率高,而花岗岩、片麻岩等岩石分布区滑坡不发育;斜坡坡度大于30°的谷地是滑坡主要发育区。

关键词: 滑坡;发育规律;地质因素;藏东南

Abstract:

The southeast Tibet terrain with deep valleys and steep mountains is abundant in geological disasters such as landslides. This paper analyzes the landslide development regularity, discusses the relation between landslides and terrain, lithologies, structures, and rainfalls. The landslides occur during the rainy seasons May to September, most in June. The landslides trend to occur in sandstone, shale, mudstone, and active faults areas, but not in the granite and gneiss areas. Slope with over 30 degrees is also favorable for landslides.

Key words:

landslides; development regularity; geological factors; southeast Tibet

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