基于电磁感应效应的高压旋喷桩桩径检测试验研究

doi:10.13722/j.cnki.jrme.2021.0167

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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.

Key words： foundation engineering high pressure jet grouting pile pile diameter detection electromagnetic induction linear regression analysis

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	Articles by authors
	SI Fengjuan1
	2
	ZHANG Mingwei1
	2
	YUAN Guotao1
	2
	HAN Xiaomin3
	SONG Weijie4
	LI Jianping4

Cite this article:

SI Fengjuan1,2,ZHANG Mingwei1, et al. Experimental study on diameter detection of high pressure jet grouting pile based on electromagnetic induction effect[J]. , 2021, 40(S2): 3434-3442.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0167 OR http://rockmech.whrsm.ac.cn/EN/Y2021/V40/IS2/3434

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