Research on Application of Accurate Positioning and Detecting Technology for Deep-buried Foundation Piles

In order to accurately detect the deep underground foundation piles left over from the urban renewal process, physical characteristics of foundation piles and the characteristics of engineering projects were analyzed. The comprehensive method combining high density electric method and magnetic gradient method was used to detect deep buried foundation pile. A variety of drilling methods were used, and the inclinometer was used to correct the change of deep hole channel inclination, so as to achieve the precise positioning of deep foundation pile. Through engineering application, it is proved that the method combining comprehensive geophysical exploration and scientific exploration can locate and detect the deep buried foundation pile accurately and effectively.