王德伟, 倪化勇, 白永健, 龙斌, 王艳, 徐洪申. 2016: 西昌海河流域大中型滑坡发育特征及其成灾规律分析. 工程地质学报, 24(s1): 1003-1009. DOI: 10.13544/j.cnki.jeg.2016.s1.145
    引用本文: 王德伟, 倪化勇, 白永健, 龙斌, 王艳, 徐洪申. 2016: 西昌海河流域大中型滑坡发育特征及其成灾规律分析. 工程地质学报, 24(s1): 1003-1009. DOI: 10.13544/j.cnki.jeg.2016.s1.145
    WANG Dewei, NI Huayong, BAI Yongjian, LONG Bin, WANG Yan, XU Hongshen. 2016: ANALYSIS ON DEVELOPED CHARACTERISTICS AND DISASTER LAWS OF LARGE-MEDIUM LANDSLIDES IN THE HAIHE RIVER BASIN. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 1003-1009. DOI: 10.13544/j.cnki.jeg.2016.s1.145
    Citation: WANG Dewei, NI Huayong, BAI Yongjian, LONG Bin, WANG Yan, XU Hongshen. 2016: ANALYSIS ON DEVELOPED CHARACTERISTICS AND DISASTER LAWS OF LARGE-MEDIUM LANDSLIDES IN THE HAIHE RIVER BASIN. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 1003-1009. DOI: 10.13544/j.cnki.jeg.2016.s1.145

    西昌海河流域大中型滑坡发育特征及其成灾规律分析

    ANALYSIS ON DEVELOPED CHARACTERISTICS AND DISASTER LAWS OF LARGE-MEDIUM LANDSLIDES IN THE HAIHE RIVER BASIN

    • 摘要: 海河流域以邛海湖为核心,呈树枝状展布,将美丽的西昌城环保其中。受地质环境条件所限,流域内地质灾害频发,危害严重。随着近年来以图幅为单元的高精度地质灾害调查工作的开展,发现海河流域内10万立方米以上的大中型滑坡数量众多,其发生往往造成严重的灾害事件。本文以典型实例为基础,研究分析了海河流域内大中型滑坡的发育特征,归纳总结了其主要危害形式及成灾规律,对区域内地质灾害研究与防治具有一定的科学意义。分析结果表明:(1)海河流域内大中型滑坡主要发育在攀西红层中,地层岩性特征影响着滑坡的滑动失稳方式;(2)断层及其诱发的劈理常构成滑坡边界或滑动面,进而控制滑坡变形;(3)海河流域内大中型滑坡多为降雨、洪水、地震等多因素耦合诱发的;(4)受人类工程活动因素影响,海河流域内大中型滑坡灾害表现出直接危害小、间接影响大,且链式效应明显的成灾规律。

       

      Abstract: The Haihe River using Qionghai Lake as the coresurrounds beautiful Xichang City. Due to the limit of the geological environment conditions, there are many geological disastersin the basin. On the basic of high precision geological disastersinvestigationin mapsheet, we found that there are many large-medium landslides which volume is more than 105m3 and often resulted in serious disasters. Basing on case, the paperanalyzesdeveloping characteristics of,summarizes the main form and disaster laws of large-medium landslide in Haihe River Basin. The results show that:(1) Large-medium landslides inHaihe River Basindistributed mainly in Panxi red bed region. The petrographic characters influence failure mode of large-medium landslides inHaihe River Basin.(2) Thefault plane and fault-induced cleavage planes lay a foundation for landslide.it controls slippage of large-medium landslides inHaihe River Basin.(3) Large-medium landslides inHaihe River Basin induced by multiple-factor coupling such as rainfall, flood, earthquake.(4) Affected by human engineering activity, the disaster laws of large-medium landslide in Haihe River Basinis that direct damage is little and indirect effect is great, chain effect is marked.

       

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