On the basic of large engineering practice, according to the complex karstgeology problem of karst tunnel construction, the author grasped the major and difficult problem to research.
YiyangLoudi section of LuoyangZhanjiang railway lies on karst geologic hazard area with complicated hydrogeology and engineeringgeology condition.
洛湛铁路益娄段地处岩溶发育区，水文工程地质条件复杂。
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Chapter 4, According to the engineering-geology problem of Karst roadbed, we have a research on the stability and disease processing scheme of the roadbed.