铜陵地区铁路岩溶病害整治技术研究

Treatment Technology for Karst Disease of Railway in Tongling Area

近年来,铜陵地区既有铁路路基时有岩溶塌陷现象发生,严重影响铁路运营与行车安全。通过对铜陵地区多处岩溶塌陷路基病害进行地质综合勘探分析,阐述了本地区浅覆盖岩溶病害形成的内因和外因,综合评分划定塌陷可能分区,为既有病害路基整治提供设计依据;由于路基地面塌陷在停止抽水后仍将发生的"滞后效应",提出对岩溶路基加固"防、治并重"的建议。

In recent years,karst collapse phenomenon occurs occasionally in the existing railway subgrade of Tongling area.This severely affects the operation and traffic safety of railway. Based on the comprehensive geological survey and analysis for a number of karst collapses in the railway subgrade of Tongling area,this paper explained the internal and external causes of the shallow-covered karst disease,conducted comprehensive evaluation of potential collapse area,which provided the design basis for the treatment of diseases in existing subgrade. Due to the＂lag effect＂of karst collapse after pumping,this paper put forward the proposal of ＂placing equal stress on protection and treatment＂for reinforcing the karst subgrade.