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- Title
Application of Multi-Electrode Resistivity Method on Semi-Diagenesis Rocks in Freezing Area and Its' Implications.
- Authors
Kan, Wenguang; Yang, Zailin; Sun, Menghan
- Abstract
Recently, with the development of geophysical exploration technology, geophysical engineering instruments and methods have also improved. The multi-electrode resistivity method is widely used in engineering exploration. In this paper, multi-electrode resistivity tests were carried out in a seasonal frozen soil area in Heilongjiang Province, to provide an optimized multi-electrode resistivity method under the conditions of frozen soil. Combined with shear wave velocity tests and standard penetration tests, multi-electrode resistivity tests were used to comprehensively analyze and evaluate the physical and mechanical properties of Tertiary semi-diagenesis rocks. The results show that the high resistivity due to the frozen surface layer acting as a shield can be eliminated by technical means. It is feasible to test the resistivity through the frozen surface layer. The multi-electrode resistivity method can visually reflect the interface between saturated sand and semi-diagenetic rocks. Dividing the interface between saturated sand and semi-diagenetic rocks is advantageous as the morphology of the resistivity curve has a significant curvature change. There is a strong correlation between the resistance and shear wave velocity of a strata in which the Pearson correlation coefficient is as high as 0.99. The multi-electrode resistivity method test used in combination with the shear wave velocity test and the standard penetration test could give the bearing capacity and frictional resistance of semi-diagenetic rocks, which saves a lot of time and material costs in engineering exploration.
- Subjects
HEILONGJIANG Sheng (China); FRICTION velocity; FROZEN ground; SHEAR waves; SANDSTONE; GEOPHYSICAL instruments; ROCK mechanics; BEARING capacity of soils; SOIL freezing
- Publication
Sensors (14248220), 2022, Vol 22, Issue 14, pN.PAG
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s22145290