西昌市喜德县泥石流的成因、危害及其治理措施

喜德县地处四川省西昌盆地的中西部,地质灾害频繁。该县地质构造复杂、新构造运动强烈、地震活动频繁,岩层破碎;地形陡峻,山高谷深,地势高差大;季风气候,降水充沛集中,多暴雨等,这是泥石流形成的内因。而作为外因,人类不合理的经济开发活动,破坏了生态平衡,则促进了泥石流的发生和发展。在分析其成因的基础上,对该县泥石流的危害及治理措施作了较为全面的阐述。

Formation and Control Measures of Debris Flow in Xide County, Xichang

Xide county is situated in the mid-west of Xichang basin with geo-hazards frequently occurring as a result of complex geological structures, strong neotectonic movements, frequent earthquakes and highly fractured rock stratum. The landform in this area is steep with a high relief and the climate belongs to the monsoon type with frequent and severe rainstorms. All these consist in the intrinsic factors leading to debris flows. Moreover, the irrational human economic and engineering activities are destroying the ecological balance and aggravating the severity of debris flows. On the basis of analysis of its formation, this paper presents illustrations of the potential hazards posed by the debris flows in Xide county and propose corresponding control measures to mitigate the hazards.