地震灾区某泥石流发育特征及危险性评价
|
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。
"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.
"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.
引文
[1]庄建琦,崔鹏,葛用刚,等.5.12地震后都汶公路沿线泥石流沟的危险性评价[J].四川大学学报:工程科学版,2009,41(5):133-140.
[2]许强.四川省8.13特大泥石流灾害特点、成因与启示[J].工程地质学报,2010,18(5):596-608.
[3]崔鹏,韦方强,何思明,等.5.12汶川地震诱发的山地灾害及减灾措施[J].山地学报,2008,26(3):280-282.
[4]刘希林,莫多闻.泥石流风险评价[M].成都:四川科学技术出版社,2003.
[5]DZ/T020—2006,泥石流灾害防治工程勘查规范[S].
[6]刘希林.沟谷泥石流危险度计算公式的由来及其应用实例[J].自然灾害学报,2002,11(4):1-8.
[7]朱忠礼,刘希林,尚志海.四川省北川县赵家沟地震次生泥石流形成条件分析[J].中国地质灾害与防治学报,2010(4):57-62.
[8]吴义鹰,邓雄业,赵建壮.磨子沟泥石流的特征研究[J].西部探矿工程,2008(7):44-46.
[2]许强.四川省8.13特大泥石流灾害特点、成因与启示[J].工程地质学报,2010,18(5):596-608.
[3]崔鹏,韦方强,何思明,等.5.12汶川地震诱发的山地灾害及减灾措施[J].山地学报,2008,26(3):280-282.
[4]刘希林,莫多闻.泥石流风险评价[M].成都:四川科学技术出版社,2003.
[5]DZ/T020—2006,泥石流灾害防治工程勘查规范[S].
[6]刘希林.沟谷泥石流危险度计算公式的由来及其应用实例[J].自然灾害学报,2002,11(4):1-8.
[7]朱忠礼,刘希林,尚志海.四川省北川县赵家沟地震次生泥石流形成条件分析[J].中国地质灾害与防治学报,2010(4):57-62.
[8]吴义鹰,邓雄业,赵建壮.磨子沟泥石流的特征研究[J].西部探矿工程,2008(7):44-46.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心