摘要
汶川地震后,泥石流灾害频发,地震灾区的减/防灾工作形势严峻。文章从以下6个方面对强震区泥石流成灾特征与减灾对策的研究成果进行了总结、论述:①复合型起动模式研究;②沿程沟床侵蚀机制研究;③沟道堰塞体渍决机制研究;④泥石流冲出模型研究;⑤承灾体易损性曲线研究;⑥泥石流定量风险评价研究。最后,阐述了当前震区泥石流研究存在的主要问题,并展望了下一步研究工作的发展趋势。
Wenchuan earthquake-induced catastrophic debris flows have been occurred frequently,which makes a threat to the disaster mitigation.In this article,the achievements of mechanism characteristic and mitigation measure of Wenchuan earthquake-induced debris flows study are summarized by the following aspects:complex initiation mechanism;debris flow entrainment mechanism;outburst mechanism of barrier dam;debris flow run-out model;vulnerability curve of elements at risk;debris flow quantitative risk assessment.Finally,main problems in Wenchuan earthquake-induced debris flows studying are examined,and prospects on future research are also presented.
引文
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