Preparation method for glue-injected small polished surface of soil sample

Abstract

The invention discloses a preparation method for a glue-injected small polished surface of a soil sample. When the soil sample is selected, the cylindrical soil sample is cut from the center of soil,so that the disturbance of the soil sample can be reduced; a treatment method of natural air drying is adopted, so that the disturbance of the soil sample is reduced; when the soil sample is loess, asoaking solution is prepared according to a volume ratio of epoxy resin to acetone to ethylene diamine to dibutyl phthalate of 200 to 100 to 6 to 4; when the soil sample is ancient soil, the volume ratio of the epoxy resin to the acetone to the ethylene diamine to the dibutyl phthalate is 200 to 100 to 7 to 3; the soaking solution is higher than the soil sample for 0. 5-1 cm; and the soil sample is hermetically soaked for 5-10 days. According to the preparation method, the refractive index of the soaking solution is close to the refractive index of the soil sample, and the soaking solution canfully fill pores of the soil sample to achieve sufficient hardness; and after the soil sample is polished, the height of the soil sample is 2-5 mm, so that the soil sample can be observed by a microscope.

Description

technical field [0001] The invention belongs to the field of soil microstructure research, and in particular relates to a method for preparing a small smooth surface of a soil sample injected with glue. Background technique [0002] The research methods of soil microstructure mainly include electron microscope image analysis method and computer image analysis method, both of which are aimed at the morphological characteristics and orientation characteristics of pores and particles; X-ray perspective, which is aimed at the orientation of particles and pores; properties; acoustic wave method, for anisotropy; mercury intrusion method, for the number and size of pores; polarized light microscope photometry, for orientation. For different research methods of different soils, the sample preparation methods of its microstructure are also different. [0003] Loess is one of the main sediment types in my country, and the research on its microstructure has involved many fields. For ...

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Problems solved by technology

For the electron microscope image analysis method, which is mainly used to study the morphological characteristics and orientation characteristics of pores and particles, the preparation method of the small smooth surface of the soil sample is not p

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