扩能改建铁路地质灾害特征与防治措施

针对辽宁省高台山-阜新-锦州铁路扩能改造工程沿线潜在的地质灾害问题,采用垂直断面法、自由膨胀率算法对扩能改造铁路通过区所引发和遭受的地面沉陷、膨胀土胀缩等地质灾害进行了专项量化评估与预测,划分地质灾害危险性分区,并结合辽宁西部地区地质灾害的特点提出灾害防治措施.为正确认识铁路通过区地质灾害类型及其特征,研究其防治措施,对优化线路走向、合理确定工程设置类型有着积极的作用.

Characteristics of geological hazard in railway expansion and its preventive measures

The reconstruction project for expanding railway transportation capacity from Gaotaishan to Jinzhou via Fuxin in Liaoning province is a national key project.There is a potential problem of geological hazard along the railway line.In applying the method of vertical profile and the algorithm of free swell ratio,this study quantifies and evaluates the geological hazards of land subsidence,and the contraction and swell of expansive soil in the area surrounding the railway line.The area is classified into different hazard zones based on the risk of geological hazards.Furthermore,the preventive measures are provided with the consideration of the characteristics of geological hazards in Western Liaoning province.The adequate understanding on the type and characteristics of geological hazards in the project zones and the investigation of corresponding preventive measures are of significance to the optimization of railway lines direction and the rational determination of rail engineering settings.