On the basic of large engineering practice, according to the complex karst geology problem of karst tunnel construction, the author grasped the major and difficult problem to research.
在大量的工程实践基础上，作者根据岩溶隧道施工所存在的问题-复杂的岩溶地质问题，抓住问题的重点和难点进行方法研究。
YiyangLoudi section of LuoyangZhanjiang railway lies on karst geologic hazard area with complicated hydrogeology and engineering geology 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。
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.
第四章，根据岩溶路基存在的工程地质问题，对路基的稳定性和路基病害处置方案进行研究。
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