ISSN 1003-8035 CN 11-2852/P
    毛正君,张瑾鸽,仲佳鑫,等. 梯田型黄土滑坡隐患发育特征与成因分析−以宁夏南部黄土丘陵区为例[J]. 中国地质灾害与防治学报,2022,33(6): 142-152. DOI: 10.16031/j.cnki.issn.1003-8035.202205005
    引用本文: 毛正君,张瑾鸽,仲佳鑫,等. 梯田型黄土滑坡隐患发育特征与成因分析−以宁夏南部黄土丘陵区为例[J]. 中国地质灾害与防治学报,2022,33(6): 142-152. DOI: 10.16031/j.cnki.issn.1003-8035.202205005
    MAO Zhengjun, ZHANG Jinge, ZHONG Jiaxin, et al. Analysis of basic characteristics and deformation mechanism of loess potential landslide of terrace: Taking loess hilly region in southern Ningxia as an example[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33(6): 142-152. DOI: 10.16031/j.cnki.issn.1003-8035.202205005
    Citation: MAO Zhengjun, ZHANG Jinge, ZHONG Jiaxin, et al. Analysis of basic characteristics and deformation mechanism of loess potential landslide of terrace: Taking loess hilly region in southern Ningxia as an example[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33(6): 142-152. DOI: 10.16031/j.cnki.issn.1003-8035.202205005

    梯田型黄土滑坡隐患发育特征与成因分析以宁夏南部黄土丘陵区为例

    Analysis of basic characteristics and deformation mechanism of loess potential landslide of terrace: Taking loess hilly region in southern Ningxia as an example

    • 摘要: 黄河流域地质构造活跃、地貌演化迅速、气候区域分异显著,导致流域内重大灾害类型多、分布广、突发性强。文章以宁夏南部黄土丘陵区为研究区,引入梯田型黄土滑坡隐患的概念,通过结合历史资料收集、遥感影像解译、现场调查和数理统计等手段,分析了梯田型黄土滑坡隐患的发育特征、分布规律及形成原因。结果表明:(1)研究区梯田型黄土滑坡隐患共26处,主要分布于第四系黄土中,中长边坡数量较多,主要为浅层与中层梯田型黄土滑坡隐患,规模以小型为主。(2)梯田型黄土滑坡隐患在空间上主要分布在黄土梁峁区和大起伏山地区,1 800~2 000 m的高程区间,坡向为东南、南、西南时分布较多;在时间上主要分布在雨季或地震活动时期。(3)地形地貌、地层结构、降雨、地表水和人类工程活动是梯田型黄土滑坡隐患发育的主要因素。研究结果对于宁夏南部黄土丘陵区以及黄河流域梯田型黄土滑坡隐患风险识别与风险管理具有指导和借鉴意义。

       

      Abstract: The Yellow River Basin has active geological structure, rapid geomorphic evolution and significant regional differentiation of climate, resulting in many types of major disasters in the basin, wide distribution and strong paroxysm. Taking the Loess Hilly Region in the south of Ningxia as the research area, this paper introduces the concept of loess potential landslide of terrace. By combining historical data collection, remote sensing image interpretation, field investigation and mathematical statistics, it analyzes the development characteristics and distribution rules of loess potential landslide of terrace, and analyzes its formation reasons. The results show that: (1)There are 26 loess potential landslide of terrace in the study area, which are mainly distributed in the Quaternary loess, with a larger number of medium and long slopes, mainly loess potential landslide of terrace of shallow and middle-level, and the scale is mainly small. (2)The loess potential landslide of terrace are mainly distributed in loess hilly areas and large undulating mountain areas, the elevation interval of 1 800~2 000 m, and the slope direction is southeast, South and southwest in space; It is mainly distributed in rainy season or seismicity period in time. (3)Topography, stratum lithologic, rainfall, surface water and human engineering activities are the main factors for the loess potential landslide of terrace. The research results have guiding and reference significance for the risk identification and risk management of loess potential landslide of terrace in the Loess Hilly Region in Southern Ningxia and the Yellow River Basin.

       

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