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Abstract With wide use of computer technic,new mathematics achievements spread quickly in the research and production of the loess and obvious effect has been obtained. With com?puter?the author tries to analyse and evaluate the problems of railway engineering geology in loess area. Because of the strip distribution,a long railway may meet different questions in different areas. Thus,in stead of researching the ealuated proble, of loess in someone area， the author begins with the common characteristics of loess,sums up the charateristic,evalu?ated methods and ways of all kinds of loess,founds the data base on railway engineering geol?ogy in loess area,imitates the process in which experts evaluate the railway site in loess ares. And a computer evaluated system is made at last. The train of thought，basement and method of the evaluated system are imtroduced in this article,and some suggestions are given in the end.
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Received: 05 June 1996
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1996, Vol. 13 
