An Analysis of pore structure, pore fractal feature based on decline of groundwater in compressive soil:An Example from soil mass besides Xi’an D7 Ground Fissure
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
In order to study the variation of compressive soil pores caused by decrease of pore water pressure, we studied the compressive soil on the two sides of the D7 ground fissure in Xi’an. Using the three-dimensional CT imaging technique, Matlab computing platform and VG Studio Max program, we calculated the porosity and fractal dimension variations caused by the compression deformation of compressive soil during the drop of water level, and discussed the influence factors and variation patterns of the porosity and fractal dimension in the consolidation process. The results showed that the porosity declined from 4.36% to 0.61% with the compression, and that the fractal dimension had a linear correlation with both the porosity and overburden pressure, at a correlation coefficient of 0.9237 and 0.9660 respectively. As an effective supplement of the porosity, fractal dimension could well represent the distribution characteristics of the pores. By analyzing the relationship between porosity and fractal dimension, the study results may provide parameter assignment basis for the fissure-groundwater pumping coupled model.
Keywords:
Project Supported:
Clc Number:
Mobile website
® 2024 All Rights Reserved
冀公网安备13010502002656号
冀公网安备13010502002656号