解明礼, 赵建军, 巨能攀, 何朝阳, 王俊. 多源数据滑坡时空演化规律研究——以黄泥坝子滑坡为例[J]. 武汉大学学报 ( 信息科学版), 2020, 45(6): 923-932. DOI: 10.13203/j.whugis20190060
引用本文: 解明礼, 赵建军, 巨能攀, 何朝阳, 王俊. 多源数据滑坡时空演化规律研究——以黄泥坝子滑坡为例[J]. 武汉大学学报 ( 信息科学版), 2020, 45(6): 923-932. DOI: 10.13203/j.whugis20190060
XIE Mingli, ZHAO Jianjun, JU Nengpan, HE Chaoyang, WANG Jun. Research on Temporal and Spatial Evolution of Landslide Based on Multisource Data: A Case Study of Huangnibazi Landslide[J]. Geomatics and Information Science of Wuhan University, 2020, 45(6): 923-932. DOI: 10.13203/j.whugis20190060
Citation: XIE Mingli, ZHAO Jianjun, JU Nengpan, HE Chaoyang, WANG Jun. Research on Temporal and Spatial Evolution of Landslide Based on Multisource Data: A Case Study of Huangnibazi Landslide[J]. Geomatics and Information Science of Wuhan University, 2020, 45(6): 923-932. DOI: 10.13203/j.whugis20190060

多源数据滑坡时空演化规律研究——以黄泥坝子滑坡为例

Research on Temporal and Spatial Evolution of Landslide Based on Multisource Data: A Case Study of Huangnibazi Landslide

  • 摘要: 滑坡演变是一个长期且复杂的过程,地质灾害体在各类数据中有不同的表现特征,同时各类数据源在滑坡不同阶段有一定的适用性。采用多源数据融合方法,利用各类数据源在滑坡体中不同的特征与适用性,研究黄泥坝子滑坡在滑前-滑中-滑后动态演变过程中的变形破坏特征和时空演化规律。结果表明,黄泥坝子滑坡变形破坏过程可分为4个阶段:启动阶段、加速变形(加速滑移)阶段、前缘扩展(减速滑移)阶段、渐进稳定阶段;黄泥坝子滑坡是在自重、降雨渗透、地震及人类工程活动造成的震动等多效应影响作用下形成的蠕滑-拉裂式滑坡。总结各类数据在滑坡不同阶段的应用,滑前阶段可应用合成孔径雷达技术、光学影像与地形数据确定潜在滑坡体;滑中阶段可利用光学遥感影像分析滑坡堆积体整体变形与演变趋势,利用全球定位系统(global positioning system,GPS)持续观测局部变形;滑后阶段可通过现场调查确定地质灾害体工程地质特征。

     

    Abstract: Landslide evolution is a long-term and complex process. Geo-hazards have different characteristics in various data, and have certain applicability in different stages of landslide. This paper applies different characteristics and applicability of various data sources in landslide by the multi-source data fusion method. The deformation and failure characteristics and temporal and spatial evolution law of Huangnibazi landslide during its dynamic evolution from pre-sliding to mid-sliding to post-sliding are studied. The results show that the deformation and failure process of Huangnibazi landslide can be divided into four stages:start-up stage, accelerated deformation (accelerated sliding) stage, front expansion (decelerated sliding) stage and gradual stabilization stage. Huangnibazi landslide is a creep-pull-split landslide formed under the influence of self-weight, rainfall infiltration, earthquake and vibration caused by human engineering activities. The application of various data in different stages of landslide is summarized:interferometric synthetic aperture radar(InSAR) technology, optical image and topographic data are used to determine potential landslide body before sliding. Optical remote sensing image is used to observe the overall deformation and trend of landslide accumulation body during sliding. Global positioning system (GPS) is used to continuously observe local deformation after sliding. Field investigation is used to determine the characteristics of geological hazard body.

     

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