【摘要】 近年来,东北界河乌苏里江我国一侧塌岸地质灾害频发,江岸侵蚀严重,对沿岸居民的生产生活造成严重影响。针对这一情况,利用多源、多尺度、多时相遥感数据及研究区地质图、地形图、地貌图,结合野外实地调查工作和GIS技术,提取了植被覆盖度、工程地质、地貌特征、护岸类型和剖面地质结构及研究区塌岸地质灾害数据,建立了河岸稳定性评价体系;采用似然比方法对饶河段河岸稳定性进行了定量评价,得到了河岸稳定性分区结果;并对分区结果的可靠性和精确性做了评价和验证,发现分区结果与实际情况具有较好的一致性。本研究基于多源地学数据,利用似然比开展河岸稳定性评价,对塌岸地质灾害调查、环境保护和防灾减灾具有重要的理论意义和现实价值。更多还原

【Abstract】 In recent years,the bank collapse geological disaster of the boundary river,Wusuli River in northeast China occurs frequently.The serious riverbank erosion has great effect on production and living of the coastal residents.This work establishes a riverbank stability evaluation system by extracting data of the vegetation coverage,engineering lithological character,geomorphology,geology revetment structure types,profiles and bank collapse geological disaster by means of remote sensing data and geological map of the study area,combined with field survey work and GIS technology.The riverbank stability partition was produced with likelihood ratio method in the river banks of the Raohe County.Evaluation and validation of reliability and accuracy show that the results of the partition agree well with the actual situation.Based on a combination of multi-source geoscience data,this paper conducted riverbank stability with the likelihood ratio method.The method used in this paper will be useful for evaluating the geohazards of bank collapse.更多还原