Intelligent identification of unfavorable geologic body by GPR image

In the field of tunnel fore geological forecast,when karst caves exist in front of work face,the time sec-tion of GPR usually has hyperbola character.The paper,according to the mature knowledge,put forward a method using nerve network mode to identify hyperbola in GPR image and to realize intelligent forecasting of karst caves in the front of work face,the results indicate the method is feasible.