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本文以沈山线为例,介绍应用遥感技术预测桥渡水害,主要采用陆地卫星MSS_4、MSS_7和多波段假彩色合成图象判释,配以大比例尺全色黑白航片就能详细了解河床摆动、河道特性、冲淤变化现状等和其对桥渡的危害,为整治提供依据。对不同时期的陆地卫星图象和航空象片的判释,可以掌握桥渡水害的动态变化和鉴别整治效果。
Taking Shen Shan Line as an example, this paper introduces the application of remote sensing technology to forecast the water damage in the bridge crossing, mainly using interpretation of terrestrial satellites MSS_4, MSS_7 and multi-band false color composite images. With large-scale full-color black and white aerial photographs, , The characteristics of the river channel, the status quo of erosion and siltation, and its damage to the bridge crossing, so as to provide the basis for remediation. The interpretation of land satellite images and aerial photographs in different periods can grasp the dynamic changes of water damage in bridges and identify the remediation effects.