Survey of Highway Bridge Foundation and Stability Evaluation of Cave in Carst Region

Rock intensity and integrity of bridge foundation are obtained based on surveying and mapping of engineering geology,by means of drilling and testing of sound wave.So the basic rock quality of the foundation is evaluated and the parameters of stability evaluation of carst cave are presented,with qualitative method、semi-quantitative method and quantitative method.And these methods have a successful application on Huoshipo Bridege of Zhen-Shui Highway,which is from Zhenning to Shuicheng.