昌栗高速公路K48+040-K53+582段岩溶塌陷稳定性评价

Stability Evaluation of Karst Roadbed Along K48+040-K53+582 of Nanchang-Shangli Freeway

以昌栗高速公路某段的岩溶发育为研究对象,在查明研究区地质环境条件的基础上,采用层次分析和模糊评判相结合的方法(AHP FUZZY),对研究区的岩溶塌陷易发程度进行评估,在岩溶塌陷风险定量评价方法方面进行探索。首先确定岩溶塌陷评估因子及其权重值,评估因子划分为溶洞发育条件、覆盖层条件、地形地貌条件、水文地质条件4类,再将这4类评价因子分成7个亚级评价因子;其次划分塌陷等级,将其分为4个等级,即稳定、基本稳定、较不稳定、不稳定;最后对研究区段进行岩溶稳定性风险评估。

Based on the research example in a section of Chang-Li highway which is located in the karst areas, the probable occurrence level of karst collapse was evaluated in the study by using the analytic hierarchy process and fuzzy comprehensive evaluation method （AHP FUZZY）, combined with the geological conditions. It makes an exploration in terms of karst collapse risk through quantitative evaluation method. Firstly, the karst collapse eval-uation factors and their weights are determined. The evaluation factors are divided into 4 categories：karst condi-tion, overburden condition, topography and geomorphology condition, hydrogeology condition. Then, these four kinds of evaluation factors are divided into 7 subevaluation factors. Secondly, the collapse level is divided into four levels, namely： stable, basic stable, the more unstable, unstable. Finally, the study area is evaluated and predicted.