基于抗灾能力的矿渣型泥石流风险评价方法——以小秦岭金矿区为例  

A tentative discussion on the risk evaluation of slag debris flow based on disaster-resisting capability: A case study of the Xiaoqinling gold mining area

作　　者：陈华清[1,2,3] 杨敏[1] 张江华[1,2,3] 何芳[1,2,3] 乔冈[1,2,3] 刘瑞平[1,2,3] 

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054 [2]国土资源部黄土地质灾害重点实验室,陕西西安710054 [3]国土资源部陕西潼关矿山地质环境野外科学观测研究基地,陕西西安710054

出　　处：《地质通报》2015年第11期2009-2017,共9页Geological Bulletin of China

基　　金：中国地质调查局项目(编号:1212011220224;1212010741003);国家自然科学基金项目(批准号:40872208)

摘　　要：考虑到近年来国家对小秦岭金矿区矿山泥石流防治工程投入、山区居民抗灾意识逐步增强等实际情况,从承灾体抗灾能力对风险的减弱作用出发,尝试提出了矿渣型泥石流抗灾能力评价指标及评价方法,并将其运用到泥石流风险评价模型中。抗灾能力评价结果表明,研究区所有支沟的泥石流抗灾指数普遍不高,抵御泥石流风险的能力不强。风险评价结果显示,18条支沟中仅有东桐峪的北沟泥石流风险性高,其余均为中等风险级别。这一结果低于传统泥石流风险评价模型的评价结果,是区域内泥石流沟谷中承灾体主动或被动抵抗泥石流危害能力的体现。In consideration of the project for prevention and control of debris flow implemented by Chinese Government in recent years and the gradual strengthening of the disaster-resisting consciousness of the residents of mountain areas, the authors, starting with the role of the hazard-bearing body’s disaster-resisting capability in reducing the risk, tried to put forward the evaluation index and evaluation method for the disaster-resisting capability of the slag type debris flow, and applied the method and index to the debris flow risk evaluation model. The results of disaster-resisting capability evaluation show that all the gullies’ debris flow disaster-resisting indices are generally at a low level, and their capability for resisting debris flow disaster is not strong. The result of risk evaluation indicates that, of the 18 gullies, only the Beigou debris flow at Dongtongyu is of high risk, and all other gullies are of the medium risk. This result is lower than the evaluation result by the traditional debris flow evaluation model, which might directly reflect the expression of the active or passive resistance against the debris flow hazards in the region of debris flow gully.

关 键 词：抗灾能力 泥石流风险评价 矿渣型泥石流 小秦岭金矿区 

分 类 号：P694[天文地球—地质学] P642.23