在天然河道中，由于水流和岸坡的相互作用会导致河岸失稳，甚至造成河岸崩塌。为了保证河道安全与生态平衡，同时，也为了保证居民正常的生产生活，对河岸稳定性进行研究是十分必要的。多方法、多断面、多指标相结合的方法能弥补一般稳定性分析方法的不足。运用 Trimble Juno SC 高精度手持 GPS 、实地勘测及取样实验等多种方法，对大凌河河岸17个断面岸坡倾角、河岸高度、河岸基质类别、坡脚冲刷强度和岸坡植被覆盖率稳定性指标进行分析评估。结果表明大凌河河岸整体稳定性较好。分析结果能为将来河岸加固和防护提供依据和参考。%In natural river ,the interaction of water flow and bank slope will lead to the unstability of the river bank ,and even cause the bank collapse .In order to ensure the safety of river and ecological balance ,as well as to guarantee the residents’ normal production and living ,the study on the stability of river bank is very necessary .The method combined with many methods ,more sections and many indicators can make up for the inadequacy of general stability analysis method .Here ,by using the Trimble Juno SC high-precision handheld GPS ,field survey ,sampling test and many other methods ,and through 17 cross sections of Daling River ,the stability indices of the river bank were analyzed and evaluat-ed including the bank slope inclination ,bank slope height ,matrix category of river bank ,slope erosion intensity and bank slope vegetation coverage rate .The research results indicate that the overall stability of Daling River is better .The analysis results could provide the basis and reference for the bank reinforcement and protection in the future .
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