茨里沟泥石流灾害评价
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摘要
"5.12"地震后,灾区地质环境十分复杂,区内滑坡、崩塌等地质灾害发育,为泥石流发育提供了大量松散物源,在强降雨条件下,极易形成泥石流灾害,严重威胁灾区人民的生产生活[1]。通过汶川县茨里沟灾害调查评价,详细分析了该泥石流成因机制、发生频率、发展趋势和危险性程度,通过计算泥石流基本特征值,提出"以拦为主"的防治措施,使泥石流威胁区域内危险程度降低,对改善当地地质环境和生态环境,防灾、减灾效益和社会效益明显[2]。
After the"5. 12"earthquake,the geological environment of the inflicted area has become very complex,the development of landslide,collapse and other geological disasters in the area provides a lot of loose material source for the development of debris flow. Under the condition of heavy rainfall,it is prone to cause debris flow disasters,which will put a serious threat to the people's livelihood. Based on the survey and assessment of debris flow hazard of Cili gully in Wenchuan county,the debris flow formation mechanism,characteristics,frequency,risk degree and the development trend were analysed in detail. According to the calculation of the basic characteristics of debris flow value,the prevention measure of "retaining primarily"was put forward. This measure will reduce the risk of the onset of debris flows to the endangered area and improve the local geological and ecological environment,as well as enhance the benefits of disaster prevention and mitigation,along with other social benefits.
After the"5. 12"earthquake,the geological environment of the inflicted area has become very complex,the development of landslide,collapse and other geological disasters in the area provides a lot of loose material source for the development of debris flow. Under the condition of heavy rainfall,it is prone to cause debris flow disasters,which will put a serious threat to the people's livelihood. Based on the survey and assessment of debris flow hazard of Cili gully in Wenchuan county,the debris flow formation mechanism,characteristics,frequency,risk degree and the development trend were analysed in detail. According to the calculation of the basic characteristics of debris flow value,the prevention measure of "retaining primarily"was put forward. This measure will reduce the risk of the onset of debris flows to the endangered area and improve the local geological and ecological environment,as well as enhance the benefits of disaster prevention and mitigation,along with other social benefits.
引文
[1]铁永波.强震区城镇泥石流危害风险评价方法与体系研究[D].成都:成都理工大学,2009.
[2]张建石.基于GIS的汶川县城镇泥石流风险性评价研究——以南沟泥石流为例[D].成都:成都理工大学,2012.
[3]亓星,余斌,朱渊,等.贵州都匀马达岭滑坡碎屑流形成泥石流特征[J].中国地质灾害与防治学报,2013,24(1):1-6.
[4]张建良,车志强,韩国童,等.河南卢氏县罗家沟泥石流灾害评价[J].中国地质灾害与防治学报,2013,24(1):7-17.
[5]刘仁志,倪晋仁.中国暴雨泥石流危险性区划[J].应用基础与工程科学学报,2005,12(4):346-360.
[6]李泳.泥石流沟床比降的几点讨论[J].土壤侵蚀与水土保持学报,1999,5(6):51-55.
[7]庄建琦,崔鹏,葛永刚,等.降雨特征与泥石流总量的关系分析[J].北京林业大学学报,2009,31(4):77-83.
[8]马宗源.泥石流流场三维数值模拟研究[D].西安:长安大学,2006.
[9]国土资源部地质环境司.DZ/T0220-2006.泥石流灾害防治工程勘查规范[S].北京:中国标准出版社,2006.
[10]鲁科.泥石流爆发频率与其形成区岩性的相关研究[D].成都:成都理工大学,2010.
[11]四川省水利电力厅编.四川省中小流域暴雨洪水计算手册[M].成都:四川省水利电力厅,1984.
[12]秦云鹏.浅谈稀性泥石流流速[J].泥沙研究,1983,(1):36-40.
[13]中华人民共和国国土资源部.DZ/T0239-2004.泥石流灾害防治工程设计规范[S].北京:中国标准出版社,2004.
[2]张建石.基于GIS的汶川县城镇泥石流风险性评价研究——以南沟泥石流为例[D].成都:成都理工大学,2012.
[3]亓星,余斌,朱渊,等.贵州都匀马达岭滑坡碎屑流形成泥石流特征[J].中国地质灾害与防治学报,2013,24(1):1-6.
[4]张建良,车志强,韩国童,等.河南卢氏县罗家沟泥石流灾害评价[J].中国地质灾害与防治学报,2013,24(1):7-17.
[5]刘仁志,倪晋仁.中国暴雨泥石流危险性区划[J].应用基础与工程科学学报,2005,12(4):346-360.
[6]李泳.泥石流沟床比降的几点讨论[J].土壤侵蚀与水土保持学报,1999,5(6):51-55.
[7]庄建琦,崔鹏,葛永刚,等.降雨特征与泥石流总量的关系分析[J].北京林业大学学报,2009,31(4):77-83.
[8]马宗源.泥石流流场三维数值模拟研究[D].西安:长安大学,2006.
[9]国土资源部地质环境司.DZ/T0220-2006.泥石流灾害防治工程勘查规范[S].北京:中国标准出版社,2006.
[10]鲁科.泥石流爆发频率与其形成区岩性的相关研究[D].成都:成都理工大学,2010.
[11]四川省水利电力厅编.四川省中小流域暴雨洪水计算手册[M].成都:四川省水利电力厅,1984.
[12]秦云鹏.浅谈稀性泥石流流速[J].泥沙研究,1983,(1):36-40.
[13]中华人民共和国国土资源部.DZ/T0239-2004.泥石流灾害防治工程设计规范[S].北京:中国标准出版社,2004.
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