地质基础(Geological basis).doc
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地质基础(Geological basis)
1, the geological structure: refers to the composition of the crust of rock and rock mass, the dynamic geological occur under the action of deformation, thus forming such as fold. Joint. Fault. Cleavage and other various planar and linear structure, etc.
2, structure to build learning: the main research in dynamic geological formed by various geological tectonic form. Attitude scale forming conditions forming mechanism, distribution and combination rule and evolution history, and then discusses geological structure of the crust movement way. Laws and power source.
3. Bedding: it is a kind of native structure common in sedimentary rocks. It is a layer structure that is formed by the rock composition, the structure and the color of a mutation or gradient in the section.
4. Stress state: the stress distribution of the object after the external force is applied.
5. Stress: the internal force applied to the unit area under the uniform distribution of internal forces.
6. Coulomb shear failure criteria: the ability of the rock to resist shear failure is not only related to the shear force on the cross section, but also related to the positive stress in the cross section.
7. Fold: the bending deformation of the force of the rock, which is formed by the surface of the rock in the form of the original close and flat surface.
According to the axial surface and the two wings, the pleated folds are divided into: erect, oblique, inverted, flat, rolling fold.
Lekard classification: erect, vertical, vertical, oblique, flat, oblique, oblique.
8. Same sedimentary fold: in the background of the whole settlement, the depositing is formed on the side.
Features: thin, thick, thin, thin, gentle, steep, steep, if the fault disc development rolling back to the high point migration (anticline). Syncline: the thickness of the rock strata in the central part is the largest, and the central part is deposited fine particles.
Total features: the lower part of the two wing i
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