Abstract：The extra-long bridge in a railway line from Fengzhun to Zhungeer is located in the gorge of Yellow River in Inner Mongolian Loess Plateau. Karst is the main problem af?fecting the stability of the bridgebase. The main achievement made through several effective methods such as the in-drilling radiowave transimission，the geological mapping and the drilling are introduced，The rules of karst development in North China are also probed here。
苗洪波*叶宗荣. 丰准线黄河特大桥岩溶勘察及发育规律探讨[J]. 铁道工程学报, 1996, 13(2): 141-145.
Miao Hongbuo Ye Zongrong. KARST GEOLOGY SURVEY FOR AN EXTRA-LONG BRIDGE OF FENGZHUN RAILWAY LINE AND DISCUSSION ABOUT THE RULES OF KARST DEVELOPMENT. Journal of Railway Engineering Society, 1996, 13(2): 141-145.
1996, Vol. 13 
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