Study on Microscopic Structure and Mineral Composition of Shallow Rock Using SEM

Abstract:

Microscopic structure and mineral composition of shallow rock in different geological group were detect using scanning electron microscopy technology, and the influence of microscopic structure and mineral composition on macro-mechanical properties was analyzed. The results showed that: from the surface to the coal seam: sandy mudstone particle surface banded, non-directional distribution into flake orientation distribution point - point contact - surface contact into contact between particles, resulting in the rock mass more easily broken, the breaking the block becomes small; the sandy mudstone particle volume decreases, the smaller the gap between the particles, and by filling into velvet spherical aggregates filling, resulting in increased contact area in the rock mass fracture; sandy shale montmorillonite content increases, the rock mass in the water particle volume expansion, extrusion intergranular pore, reduce pore channel, the rock mass macroscopic pass water to reduce.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 2552-2558
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.2552
• Online since: February 2013
• Authors: Ming Zhang, Jian Guo Ning, Hong Bin Zhang, Xue Sheng Liu
• Keywords: Mechanical Property, Microstructure, Mineral Composition, SEM

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