西安至延安高速铁路沿线滑坡灾害及其防治对策分析

拟建西安至延安高速铁路位于黄土高原,由于河流冲刷、人类工程活动等因素,其沿线发育大量黄土滑坡,具有密度大、易滑动、难防治等特点,严重威胁铁路行车安全。在陕西I49E007004(耀县)幅1∶5万环境地质调查项目研究报告的基础上,结合遥感解译成果,对沿线的滑坡灾害发育特征及防治对策进行分析。分析认为:西延铁路沿线的黄土滑坡可归纳为3类,分为黄土内滑坡、黄土-基岩接触面滑坡、黄土-泥岩滑坡,且其分布的空间特征具有不均匀性、群集性和延续性,并因地制宜,对线路沿线的黄土滑坡提出防治对策,为拟建西延高铁沿线黄土滑坡灾害的防治提供相关参考和依据,同时助力黄土高原滑坡灾害的防治。

Analysis of Landslide Disaster along Xi'an-Yan'an High-speed Railway and Countermeasures

The proposed Xi'an-Yan'an High-speed Railway is located in the Loess Plateau. Due to the factors such as river erosion and human engineering activities,a large number of loess landslides along the railway line are developed,which are characterized by heavy density,likelihood of sliding and control difficulties. Based on the research report of 1 ∶ 5 environmental geological survey project of Shaanxi I49E007004( Yaoxian) and with reference to the results of remote sensing interpretation, the characteristics of landslide disaster development and the countermeasures are analyzed. It is concluded that the loess landslide along the west extension railway can be classified into three types: loess landslide,loess-bedrock contact landslide and loess-mudstone landslide with such spatial characteristics as unevenness,clustering and continuity. Prevention and control measures against the loess landslide along the line are put forward,and relevant references are provided for the proposed railway,which facilitates the control of landslide disaster in the Loess Plateau.