Ferromagnetism substances in the pipe pile will be magnetized under the excitation of geomagnetic field, which changes the magnetic field around the pipe pile. Ferromagnetism substances can be regarded as a right cylinder, and magnetic field characteristics around the pipe pile were analyzed on combination with model piles' tests. Lengths of pipe pile under buildings were detected by the magnetic logging principle.Application examples indicate that it is effective to detect the length of the pipe pile under buildings with the magnetic logging principle.
樊敬亮, 程知言, 胡光云, 董平, 林志刚. 建(构)筑物下管桩长度检测方法[J]. 物探与化探, 2007, 31(3): 269-273.
FAN Jing-liang, CHENG Zhi-yan, HU Guang-yun, DONG Ping, LIN Zhigang. LENHTH DETECTION OF THE PIPE PILE UNDER BUILDINGS. Geophysical and Geochemical Exploration, 2007, 31(3): 269-273.