Zoumaling tunnel passes through the Fangdoushan anticline where the karst development is strong.
走马岭隧道通过方斗山背斜可溶岩地区，岩溶发育强烈。
It is of great use to tunnel design and construction by investigation of karst development and analysis of water burst mechanism.
调查岩溶发育特征，分析突水机理，对隧道的设计和施工具有重要的指导作用。
Fractal dimension and fractal assessment index of karst were calculated, and they were used to evaluate karst development degree.
计算了岩溶元的分形生长维数和岩溶发育的分形评价指数，据此对岩溶发育程度进行判别。
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