Scanning Electron Microscopy Testing Technology in Geotechnical Engineering

  • Jun Li


Geotechnical media itself is very complex, such as geotechnical structure, porosity, density, stress history, load characteristics, pore water and time effects. It is usually necessary to simulate the mechanical properties of geotechnical and simulate various aspects of geotechnical engineering including nonlinear stress-strain relationship, transient consolidation, steady-state rheology, well point precipitation, soil liquefaction analysis, construction process, geotechnical Stress-deformation and stability, slope stress and stability, analysis of slope and chamber anchorage effects, bearing capacity and subsidence analysis of subgrade, foundation, deep foundation pit, pile, etc., between soil and reinforced concrete road main body interaction. Due to the limitation of resolution and magnification, the traditional optical microscope is inaccurate for the qualitative analysis of fine particles. There is a certain error in the quantitative analysis of rock and soil. The observation of nano-micron mineral morphology and structural features is at a loss. With the deepening of oil and gas exploration and geological prospecting, it is necessary to provide information on all minerals, pores and trace elements in rocks. Therefore, the use of scanning electron microscopy to establish a rock mineral identification method based on large instruments is the need of current geological work. In this paper, the application of the sample and the test method, the dynamic monitoring method of the microstructure change, and the quantitative analysis technology of the scanning electron microscope are used to study its application in geotechnical engineering.