在建映(秀)汶(川)高速公路彻底关沟泥石流发育基本特征  

Features of Debris Flow in Chediguangou under the Construction of Yingxiu-Wenchuan Highway

作　　者：肖维[1] 龚睿 

机构地区：[1]西华大学能源与环境学院,四川成都610039 [2]四川省交通运输厅公路规划勘察设计研究院,四川成都610041

出　　处：《西华大学学报（自然科学版）》2012年第4期108-112,共5页Journal of Xihua University:Natural Science Edition

摘　　要：彻底关泥石流沟位于映秀镇上游约18 km处,在建映(秀)汶(川)高速公路途经该沟谷沟口段,设计以隧道形式穿过彻底关沟下部。据物源分布情况的综合调查分析,彻底关沟再次爆发泥石流的可能性和危害性均较大。本文通过系统分析工程区地貌条件、区域地质构造、地层岩性等因素揭示了泥石流形成条件,并对其重要的动力学参数进行了计算,最后对在建高速公路彻底关沟段进行了危险性评价。Debris flow has a wide distribution in Chediguangou of Yingxiu-Wenchuan highway, which is 18km away from Yingxiu town. According to investigation, debris flow outbreak in Chendiguangou is more possible and fatal. While it happens, there is a seri- ous threat to nearby highway construction. The tunnel in this section of Yingxiu-Wenchuan highway is adopted. The paper systematically analyzes high and precipitous geomorphology, complex geologic structure, and stratum lithology, and reveals the reasons causing debris flow and hazards zone of construction.

关 键 词：泥石流 动力学特征 危险性评价 彻底关沟 

分 类 号：P642.23[天文地球—工程地质学] U452.27[天文地球—地质矿产勘探]