岩堆区选线及勘察方法研究

Study on Alignment and Survey Methods in Talus Area

研究目的:结合东北东部铁路通道通化至灌水铁路工程实践,系统分析了岩堆分布特点,工程地质特性和成因,研究铁路通过岩堆分布区域的选线和综合勘察方法。本文提出的关于铁路通过不良地质区域的选线和勘察方法、研究思路,可供相关专业同行参考与借鉴。研究结论:(1)线路穿越分布面较广、对线路走向和投资影响较较大的不良地质区域不能简单绕避,需要在加强地质勘察和线路方案技术经济综合比选后决策,必要时对于复杂、特殊的地质问题应进行专题研究;(2)岩堆属于较为特殊的不良地质现象,需要通过区域地质调绘、综合运用勘察方法,对其分布范围、成因、工程特性系统研究。在上述工作基础上结合线路设计标准和项目功能定位确定总体线路方案,再细化局部方案技术经济比选,最终确定线路方案和工程措施;(3)本文关于铁路通过岩堆区域选线和勘察的一般方法可应用于交通运输基础设施勘察设计领域。

Research purposes： Compared with the engineering practice of the Tonghua - Guanshui section of the northeast railway corridor, the systematic analysis is made for the talus distribution, the engineering geological characteristics and the formation causes for talus. The study is clone on the alignment and comprehensive survey methods for the railway in talus area. The alignment and survey methods and study ideas on the railway crossing unfavorable geological area presented in this paper can provide the reference to the similar works. Research condusions： （ 1 ） When the railway is built in the big unfavorable geological area which has the large impacts on alignment and engineering investment, it can not be simple to keep the railway away from the talus area, but the decision should be made after geological investigation and comprehensive comparison of the technical and economic sectors for the alignment. If necessary, a special study shall be done on the complicated and special geological problems. （2） Talus is a kind of special unfavorable geological phenomena. For alignment in talus area, the talus distribution range, formation causes and engineering characteristics should be studied by conducting the regional geological investigation and mapping with the integrated survey methods. Based on the above principles and on consideration of the alignment design standards, function orientation and refining the partial scheme in technology and economics, the final alignment plan and engineering measures are determined. （3） The general alignment and survey methods for the railway crossing talus area stated in this paper can be used for the survey and design of transport infrastructure.