›› 2006, Vol. 27 ›› Issue (S1): 572-576.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Assay of field experiment and forward calculated results of cement-soil cut-off wall’s defect detecting with multi-electrodes resistivity method

GUO Xiu-jun1，GUO- Jian1，JIA Yong-gang1，PAN You-hong2，YANG Nai-lei3   

  1. 1. Ocean University of China, Qingdao 266003, China; 2. Jimo Municipal Bureau of Water Resources, Jimo 266200, China; 3. Jianghe Engineering Limited Company of Qingdao, Pingdu 266700, China
  • Received:2006-05-26 Published:2006-12-15

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Abstract: Some cement-soil samples measured in laboratory have showed low resistivity character in a short time after they were mixed. On base of this point, many electrodes were set on the top of cement-soil cut-off wall along it’s extend direction to detect the positions of different defects which had been set in the wall in a short time after it had been built. The measured apparent resistivity sections show depth of wall , blanks between poles and cement to soil ratio variation can bring apparent resistivity patterns change and their positions correspondence. Forward Calculated results with 2.5-D finite element method (FEM) also showed the same resisitivity abnormality character with field detecting results and the abnormal resisitivity patterns changing with the type, size and resistivity variation of defects.

Key words: cement-soil cut-off wall, defects detecting, resistivity method, model experiment, numerical simulation

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