西南红层软岩地区铁路滑坡形成机理分析及治理措施

红层软岩地区铁路工程建设中滑坡问题突出。本文结合西南地区一铁路红层滑坡治理工程,利用该地区红层滑坡的现场调查结果,从红层软岩特性、地层岩性、地质地貌、水文地质条件、深孔位移监测数据等多方面对该地区铁路滑坡形成机理进行分析,并论述红层滑坡与一般滑坡的不同点,分析红层软岩岩体力学特性、地层主要成分以及红层软岩中的粉砂质泥岩在不同风化程度下的力学特性。根据分析结果提出治理措施,并对治理措施进行评价。总结得出地层岩性、地质水文、人为因素是导致红层滑坡病害发生的主要因素。

Formation Mechanism Analysis and Treatment Measures of Railway Landslide in Red Bed Soft Rock Area of Southwest China

The problem of landslide is prominent in railway engineering construction in the red bed soft rock area.In this paper,combining with a railway red bed landslide treatment project in Southwest China,using the field investigation results of red bed landslide in this area,the formation mechanism of railway landslide in this area was analyzed from the aspects of red bed soft rock characteristics,formation lithology,geological landform,hydrogeological conditions,deep hole displacement monitoring data,etc.The differences between red bed landslide and general landslide were discussed.Furtherly,the mechanical properties of the red bed soft rock mass,the main components of the stratum and the mechanical properties of the silty mudstone in the red bed soft rock under different weathering degrees were analyzed.According to the analysis results,the governance measures were put forward and evaluated.It was concluded that formation lithology,geology and hydrology,human factors were the main factors leading to the occurrence of red bed landslide.