【摘要】 "5.12"汶川地震引起崩塌、滑坡、不稳定边坡大量发育,形成的大量固体物质堆积于山坡及沟道中,形成了大量石流物源,震后泥石流暴发的临界降雨量大大降低,其启动和运动方式发生明显改变泥石流活跃期可能持续10～20a,这将是影响灾区恢复重建的最大地质灾害隐患,应高度重视。介绍了地震灾区某泥石流沟发育特征并进行性了危险性评价,计算出不同频率条件下的泥石流流量,为日后该泥石流的治理工程提供依据。更多还原

【Abstract】 "5.12"Wenchuan earthquake caused the development of unstable slopes such as collapses and landslides,and formed a great number of solid material accumulated in the hillsides and the channels.A huge amount of debris flow material source has been formed,debris flows critical rainfall greatly reduced after the earthquake,and the start and way of movement has distinctly changed.The active period of debris may last 10~20 a.This will be the biggest hidden danger in affecting the restoration and reconstruction in the disaster area,and should been highly focused.In this paper,the development characteristics and risk assessment of certain debris have been introduced,and calculated the amount of debris flow under different conditions,with the hope to provide some reference for future treatment project to this debris.更多还原