| 影响地下应力状态的构造作用 |
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| 关键词:stress state differential stress tectonic force rock and mineral formation |
| 基金项目:国家自然科学基金(49972080)，中国地质科学院地调项目(DKD20001028)资助 |
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| 摘要: |
| Tectonic Activities Affecting Ground Stress State |
| Underground pressure is an important factor for rock and mineral formation. It is derived not only from the gravity force caused by the overlying rocks but also from tectonic, thermal and other dynamic forces. All these forces construct a stress state with three differential axes. The stress state can be described by a sphere stress having the radius of the minimum axis with the superimposition of a differential stress between the maximum and the minimum axes. The spheric stress affects the rock and mineral formation and metamorphism, and the differential stress controls the deformation and the fabric variation of rocks.The spheric stress induced by tectonics is called an additional tectono-hydrostatic pressure,which is a basic of new method of measurement and calculation of fomation depth of geological actions. |
| LIU Rui-xun,LV Gu-xian.2002.Tectonic Activities Affecting Ground Stress State[J].Acta Geoscientica Sinica,23(2):103-106. |
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