空心寨沟沟谷型泥石流动力学特性研究  

Study on the Dynamic Characteristics of Valley Debris Flow in Kongxinzhai Ditch

作　　者：戴志清 毕丹 李贵朋 石风格 王忠福[3] 王博[3] DAI Zhiqing;BI Dan;LI Guipeng;SHI Fengge;WANG Zhongfu;WANG Bo(China Energy Engineering Group Science and Technology Development Co.,Ltd.,Beijing 100029,China;CNPC Liaohe Engineering Co.,Ltd.,Panjin 124010,China;North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]中国能源建设集团科技发展有限公司,北京100029 [2]中油辽河工程有限公司,辽宁盘锦124010 [3]华北水利水电大学,河南郑州450046

出　　处：《华北水利水电大学学报（自然科学版）》2020年第5期60-66,共7页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

基　　金：中国能源建设股份有限公司工程建设安全保障技术研究重大科技专项(STDC2019-KJZX-01-07)。

摘　　要：泥石流灾害是较常见且频发的地质灾害之一,常造成大量人员伤亡和财产损失。以空心寨沟泥石流为例,采用地面调查、室内试验、现场试验、定性分析及定量评价相结合的方法,分析了泥石流的基本特征,确定了相关的动力学参数,揭示了泥石流的形成规律及灾变机制。研究结果表明,空心寨沟泥石流为中频—暴雨—崩塌—滑坡—沟谷型黏性泥石流,目前处于壮年期,计算暴雨频率在P=5%条件下空心寨沟泥石流的平均流速为6.91 m/s,峰值流量达142.58 m 3/s,其中一次泥石流冲出流体总量为2.9104×104 m 3,冲出固体总量为1.5875×104 m 3。研究结果为制定空心寨沟泥石流灾害防治措施提供了重要依据。Debris flow disaster is one of the common and frequent geological disasters,which often causes a large number of casualties and property losses.In this paper,taking the debris flow in Kongxinzhai ditch as an example,the basic characteristics of the debris flow are analyzed by a combination of ground survey,indoor experiment,field test,qualitative analysis and quantitative evaluation.In this study,the relevant dynamic parameters are determined and the formation law and catastrophic mechanism of debris flow are revealed.The results are as follows.The debris flow of the in Kongxinzhai ditch is an intermediate frequency-rainstorm-collapse-landslide-gully viscous debris flow,which is in its prime years.The average velocity of debris flow in Kongxinzhai ditch is 6.91 m/s and the peak flow is 142.58 m 3/s under the condition of 5%rainstorm frequency.The total amount of fluid washed out by a debris flow is 2.9104×104 m 3,and the total amount of solid washed out is 1.5875×104 m 3.The research results provide an important basis for formulating the prevention and control measures of debris flow disasters in Kongxinzhai ditch.

关 键 词：泥石流 地质灾害 动力学特征 冲击力 形成机制 

分 类 号：P642[天文地球—工程地质学] P642.21[天文地球—地质矿产勘探]