长大隧道岩溶涌水、突泥等地质灾害问题已成为倍受关注的国际性难题,需要进一步从岩溶作用机理方面开展研究,准确认识和评价岩溶发育规律和岩溶发育程度,从而为解决岩溶地质灾害问题的关键技术提供基础理论或方法.文章在前人研究成果的基础上,从岩溶含水介质的特性研究入手,开展岩溶地下水与岩溶形态之间的作用规律及相关性研究,建立基于水化学动力学-分形指数的岩溶发育程度评价模型及评价标准,进一步形成岩溶发育程度评价的指标体系.以渝怀铁路武隆隧道2#暗河为例进行分析,评价结果与工程实际对比性较好,对同类隧道工程具有参考价值.%Geological disasters such as karst water inflow and mud burst in the long tunnel have become an international problem. And it's necessary to take further research on the mechanism of karst to have accurate understanding and evaluation of the extent and rules of karst development, to provide a basic theory for the key technology to solve the problem of karst geological disaster. Based on the previous research results, the relationship between karst groundwater and karst morphology is studied, an evaluation model and evaluation standards for karst development by hydrochemical kinetics-fractal index are established from the aspect of characteristics of karst aquifer medium, and an evaluation index system of karst development degree is formed. Using the 2# groundwater river in Wulong tunnel as an example, it shows the evaluation results agree well with the engineering practice.
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