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震区泥石流对线路工程的危害及防灾对策研究

DOI: 10.3969/j.issn.1674-0696.2014.02.18, PP. 81-85

Keywords: 环境工程,泥石流,震后灾区,线路工程,危害模式,防灾模式,environmentalengineering,debrisflow,areasaftertheearthquake,highwayengineering,disastermodel,disasterpreventionmodel

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Abstract:

:？研究了汶川地震灾区泥石流损害线路工程的典型事件，归纳出泥石流对线路工程有4种危害模式：掩埋和淤积、冲刷、冲击、堵塞主河。基于泥石流堵塞主河对线路工程造成的危害最为严重的现象，提出了以“最大限度利用主河输移和容纳泥沙的能力”为指导的防灾对策，基于主河水位壅高值计算式和泥石流堵河异岸受灾判据，给出了主河最大容纳泥沙量的确定方法。

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