Numerical Simulation on Forming Dynamics Mechanism and Stress State of Qianning Basin

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Two-dimensional finite element model of Qianning basin was built on the basis of depth study on geological structure conditions and of rock mechanical properties in Qianning basin, tectonic stress field characteristics of Qianning fault belt and Qianning basin formation mechanism were inversed. The results show that: (1)A remarkable low stress region is come into being in the central part of Qianning basin, the low stress environment in the strike-slip fault zone has a very important control function for the basin formation. (2)in the rock bridge area of secondary fault belt sinistral right order, high stress concentration zone are formed, rock body subject to extrusion, which often forms pushing structure, the surface morphology appears landforms phenomenon such as surface uplift, drum kits etc.

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Periodical:

Edited by:

Chunliang Zhang and Paul P. Lin

Pages:

1458-1461

Citation:

S. R. Su et al., "Numerical Simulation on Forming Dynamics Mechanism and Stress State of Qianning Basin", Applied Mechanics and Materials, Vols. 226-228, pp. 1458-1461, 2012

Online since:

November 2012

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$38.00

[1] Kai Wang: The numerical simulation research on tectonic stress field in key areas of Xian shuihe fault belt (MS., Chang'an University, China 2011), pp.26-34. (In Chinese).

[2] Sichuan Provincial Seismological Bureau: Xianshuihe active fault zone (Sichuan Science and Technology Press, China 1989). (In Chinese).

[3] Tianshao Li, Qifang Du, Zeli You and Chenggui Zhang: Xianshuihe fault zone and seismic risk assessment (Chengdu Cartographic Publishing House, China 1997). (In Chinese).

[4] Yonglin Yang and Qin Su: Journal of Geodesy and Geodynamics, Vol. 27(2007)No. 6, pp.22-27. (In Chinese).

[5] Hanjing Hong, Hui Liu and Xiuzhen Zheng: Earthquake Research in Sichuan, (2006)No. 4, pp.5-10. (In Chinese).

[6] Wuming Bai, Chunkai Teng and Xinhua Wang: Chinese Journal of Geophysics, Vol. 33(1990)No. 3, pp.308-317. (In Chinese).

[7] Shengrui Su, Ruiqiu Huang and Shitian Wang: The effect of fractures on rock stresses and its significance in geological engineering (Science Press, China 2002). (In Chinese).