| 地震灾区新建蒲虹公路弃土泥石流成灾特征与防治建议 |
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| 引用本文： | 崔纯纯,陈宁生,王元欢,谢万银.地震灾区新建蒲虹公路弃土泥石流成灾特征与防治建议[J].地质灾害与环境保护,2010,21(2):7-10. |
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| 作者姓名： | 崔纯纯 陈宁生 王元欢 谢万银 |
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| 作者单位： | 1. 中铁二十四局集团上海铁建工程有限公司,上海,200070
2. 中国科学院山地灾害与地表过程重点实验室,成都,610041;中国科学院水利部成都山地灾害与环境研究所,成都,610041 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目，中国科学院西部之光联合学者资助项目 |
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| 摘 要： | 蒲虹公路是地震灾区的一条灾后新建公路。公路外边坡堆放有大量的弃土,在强降雨的作用下易转化为泥石流。此类现象受到研究者的关注。本文通过对弃土场的分布、组成及成灾特征的研究,提出了科学合理的处理方法。弃土泥石流形成模式包括:(1)沟道内弃土场在沟道洪水侵蚀作用下产生泥石流或土体溜滑形成泥石流;(2)坡面上弃土场滑动,表面液化形成局部坡面泥石流;(3)沟道两侧弃土场的基脚被侵蚀,形成滑坡堵河后溃决形成泥石流。弃土泥石流的成灾特征主要为弃土泥石流翻越挡墙或摧毁挡墙,堵塞涵洞或排水口,淤埋公路,威胁居民点等,它的处置需要特别注意排水,并平整压实,恢复生态。
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| 关 键 词： | 泥石流 弃土 工程治理 公路 |
CHARACTERISTICS AND PREVENTION STRATEGY OF SPOIL DEBRIS FLOW ALONG NEWLY-BUILT PUYANG-HONGKOU HIGHWAY IN EARTHQUAKE-STRICKEN AREA |
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| CUI Chun-chun,CHEN Ning-sheng,WANG Yuan-huan,XIE Wan-yin.CHARACTERISTICS AND PREVENTION STRATEGY OF SPOIL DEBRIS FLOW ALONG NEWLY-BUILT PUYANG-HONGKOU HIGHWAY IN EARTHQUAKE-STRICKEN AREA[J].Journal of Geological Hazards and Environment Preservation,2010,21(2):7-10. |
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| Authors: | CUI Chun-chun CHEN Ning-sheng WANG Yuan-huan XIE Wan-yin |
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| Institution: | CUI Chun-chun1,CHEN Ning-sheng2,3,WANG Yuan-huan2,XIE Wan-yin2,3(1.China Railway 24th Bureau Group Shanghai Railway Construction Co.,Ltd.,Shanghai 200070,China,2.Key Lab of Mountain Hazards and Surface Processes,CAS,Chengdu 610041,3.Institute of Mountain Hazards and Environment,China) |
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| Abstract: | Debris flows induced by the Wenchuan Earthquake greatly affect the reconstruction in earthquake-stricken area.Puyang-Hongkou highway is one newly-built in the earthquake-stricken area.A lot of discarding soil is piled up on the slope,which may be transferred into debris flow under heavy rains.This phenomenon and hazards are very attractive for researchers.In this paper,the distribution of the sites of discarding soil,the formation and hazards characteristics and control measures are studied.In conclusion,th... |
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| Keywords: | debris flow discarding soil engineering control highway |
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