Experimental study on diameter detection of high pressure jet grouting pile based on electromagnetic induction effect
SI Fengjuan1，2，ZHANG Mingwei1，2，YUAN Guotao1，2，HAN Xiaomin3，SONG Weijie4，LI Jianping4
(1. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Xuzhou，Jiangsu 221116，China；2. School of Mechanics and Civil Engineering，China University of Mining and Technology，Xuzhou，Jiangsu 221116，China；3. School of Business Administration，Hunan University，Changsha，Hunan 410012，China；4. Beijing Zhongyan Dadi Technology Co.，Ltd.，Beijing 100000，China)
Abstract：High pressure jet grouting piles are widely used in the foundation stabilization and anti-seepage engineering of buildings in China，while traditional detection methods cannot achieve effective and real-time measurement of pile diameters. Based on the electromagnetic induction effect，the electromagnetic induction signal response characteristics of the model piles under different conditions of pile diameter，detection orientation，detection depth and additional easy magnet volume were investigated by physical simulation tests，and further analyzed and tested by linear regression method. The test results indicate that the decay rate of electromagnetic induction intensity decreases with the increase of the diameter of the model pile uniformly doped with easy magnetic material；the detection orientation and detection depth do not affect the electromagnetic induction signal response of the model pile；the additional easy magnet reduces the pile resistivity and enhances the electromagnetic induction effect；the orientation of the pile anomaly can be identified by signal response characteristics of different detection channels.
司凤娟1，2，张明伟1，2，袁国涛1，2，韩晓敏3，宋伟杰4，李建平4. 基于电磁感应效应的高压旋喷桩桩径检测试验研究[J]. 岩石力学与工程学报, 2021, 40(S2): 3434-3442.
SI Fengjuan1，2，ZHANG Mingwei1，2，YUAN Guotao1，2，HAN Xiaomin3，SONG Weijie4，LI Jianping4. Experimental study on diameter detection of high pressure jet grouting pile based on electromagnetic induction effect. , 2021, 40(S2): 3434-3442.
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2021, Vol. 40 
