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本文介绍了利用遥感技术对宝天铁路滑坡和崩塌灾害的调查与动态分析。通过对5个时相不同比例尺的航空像片的分析判读,在宝天段线路两侧各1公里的地带内共发现滑坡398处、崩塌206处,其中涉及线路的滑坡61处、崩塌94处。其次,在综合分析地形、地质、水文和人文等病害因素的基础上,探讨了该区域工程病害的发生规律。分析结果表明,滑坡以发生在黄土者最多,其次为破碎的变质岩和风化的花岗岩,而砂砾岩中最少;崩塌以发生在花岗岩者居多,其次是变质岩系,再次为黄土,砂砾岩中最少。该成果不仅发现了比既有资料多得多的滑坡数量,而且初步摸到了滑坡的发生规律,从而为该段线路病害的防治提供了可靠的依据。
This paper introduces the investigation and dynamic analysis of the landslide and collapse of Baotou Railway by using remote sensing technology. Through the analysis and interpretation of five aerial photos with different scales, 398 landslides and 206 landslides were found in the 1 km belt on each side of the Baotian section, of which 61 landslides and 94 landslides involved . Secondly, on the basis of comprehensive analysis of the disease factors such as topography, geology, hydrology and humanity, the occurrence rules of engineering diseases in this area are discussed. The results show that landslides occur most frequently in loess area, followed by crushed metamorphic rocks and weathered granites, with the lowest in glutenite; those that collapse to occur mostly in granites, followed by metamorphic rocks, again in loess and glutenite least. The result not only found more landslides than the existing data, but also initially detected the occurrence of landslides, which provided a reliable basis for the prevention and treatment of the disease in this section.