scholarly journals Resistivity Model of Frozen Soil and High‐Density Resistivity Method for Exploration Discontinuous Permafrost

2017 ◽  
Author(s):  
Wei Shan ◽  
Zhaoguang Hu ◽  
Ying Guo ◽  
Chengcheng Zhang ◽  
Yao Liu
Keyword(s):  
High Density ◽  
Frozen Soil ◽  
Resistivity Method ◽  
Discontinuous Permafrost ◽  
Resistivity Model

scholarly journals Experimental and analytical study of seismic site response of discontinuous permafrost

2016 ◽  
Vol 53 (9) ◽  
pp. 1363-1375 ◽  
Author(s):  
Behrang Dadfar ◽  
M. Hesham El Naggar ◽  
Miroslav Nastev
Keyword(s):  
Shear Wave ◽  
Site Response ◽  
Free Field ◽  
Frozen Soil ◽  
Shaking Table ◽  
Experimental Program ◽  
Small Scale ◽  
Seismic Site Response ◽  
Discontinuous Permafrost ◽  
Spectral Accelerations

Seismic site response of discontinuous permafrost is discussed. The presence of frozen ground in soil deposits can significantly affect their dynamic response due to stiffer conditions characterized by higher shear-wave velocities compared to unfrozen soils. Both experimental and numerical investigations were conducted to examine the problem. The experimental program included a series of 1g shaking table tests on small-scale models. Nonlinear numerical analyses were performed employing FLAC software. The numerical model was verified using the obtained experimental results. Parametric simulations were then conducted using the verified model to study variations of the free-field spectral accelerations (on top of the frozen and unfrozen soil blocks) with the scheme of frozen–unfrozen soil, and to determine the key parameters and their effects on seismic site response. Results show that spectral accelerations were generally higher in frozen soils than in unfrozen ones. It was found that the shear-wave velocity of the frozen soil as well as the assumed geometry of the blocks and their spacing have a significant impact on the site response.

Three-Dimensional Inversion and Visual Expression of Two-Dimensional Data in High Density Resistivity Method

2014 ◽  
Vol 644-650 ◽  
pp. 1377-1381
Author(s):  
De Xi Ma ◽  
Rui Qing Du
Keyword(s):  
Three Dimensional ◽  
Ore Deposits ◽  
High Density ◽  
Distribution Characteristics ◽  
Two Dimensional ◽  
Polarization Method ◽  
Geological Structures ◽  
Sulfide Deposits ◽  
Resistivity Method ◽  
Visual Expression

High density resistivity method have integrated resistivity method and induced polarization method. It is widely used in exploring metallic deposits, especially metallic sulfide deposits. The aim of this article is to study three-dimensional inversion and visual expression of two-dimensional profile survey data in high density resistivity. After testing computing capability and application effect of three-dimensional inversion, the results show that the change rules of resistivity can be seen more clearly. And the visual expression after three-dimensional inversion is able to help us observe the distribution characteristics of resistivity with various perspectives. These results are helpful for us to deduce distribution characteristics and special locations of geological structures. They are also helpful to do some effective geological explaining works for spatial distributions and changing rules of ore deposits.

Application of the Comprehensive Geophysical Prospecting Techniques in Hidden Trouble Detection of Tailings Dam

2012 ◽  
Vol 166-169 ◽  
pp. 2562-2565
Author(s):  
Hai Yan Ju ◽  
Jiang Qian Zhao ◽  
Jian Hua Li ◽  
Bin Xu ◽  
Chang Tai Luo
Keyword(s):  
Surface Wave ◽  
Mine Tailings ◽  
Safety Evaluation ◽  
Transient State ◽  
High Density ◽  
Tailings Dam ◽  
Wave Method ◽  
Geophysical Prospecting ◽  
Resistivity Method ◽  
Surface Wave Method

Geophysical detecting methods are used widely in hidden trouble exploration of embankments and dams because of their portability and efficiency. The high-density resistivity method and the transient state surface wave method are used to investigate the mine tailings dam, combining the hidden trouble characteristic and feature of the mine tailings dam, the distribution range, the defect feature and the density of the dam material are found out by using the comprehensive methods. The techniques would be offering reference for controlling mine tailings dam seepage and stability and safety evaluation.

Application of the high-density resistivity method to detect the hidden trouble in the mine sewage dam

2021 ◽  
Author(s):  
Haiyan Ju ◽  
Xiaoyong Fang ◽  
Mingfu Fu ◽  
Xingxing Liu ◽  
Chen Yang
Keyword(s):  
High Density ◽  
Resistivity Method

The Application of High-Density Resistivity Method to the Evaluation on the Stability of Gongchangling Open Pit's Slope

2014 ◽  
Vol 686 ◽  
pp. 327-332
Author(s):  
Zhuo Jia ◽  
Jian Min Zhang
Keyword(s):  
High Density ◽  
Open Pit ◽  
Two Dimensional ◽  
Actual Situation ◽  
Resistivity Method ◽  
Electric Structure ◽  
Electrical Prospecting ◽  
The Stability ◽  
Map Analysis ◽  
Electric Profiling

High-density resistivity method is a new, efficient electrical prospecting method, which can complete a two-dimensional (vertical and horizontal) prospecting process, possesses certain imaging functions for the geo-electric structure, and integrates electric profiling method with electric sounding method together. In this paper, the basic principle, data processing, and result explanation and inference of high-density resistivity method are introduced by taking the application of high-density resistivity method to the prospecting project in the slope of Gongchangling Open Pit, Liaoyang. The result of the prospecting result map analysis showed that the prospecting result was basically in line with the actual situation and proved the great significance of high-density resistivity method to the evaluation on the slope stability of Gongchangling open pit.

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