›› 2007, Vol. 28 ›› Issue (9): 1833-1840.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Test research on dynamic characteristics of Three Gorges granite under high strain rate

LI Gang1,2, CHEN Zheng-han1, XIE Yun1,2, ZU Wen-hua3   

  1. 1.Department of Architectural Engineering, Logistical Engineering University of PLA, Chongqing 400041, China; 2.No.5 Air Defense Engineering Department of PLA Air Force, Nanjing 211100,China; 3. Wuhan University of Technology, Wuhan 430070, China
  • Received:2005-09-22 Online:2007-09-10 Published:2013-10-15

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Abstract: The split Hopkinson pressure bar test equipment was improved through adopting multi-measures. A number of dynamic compression tests and dynamic split tests were conducted with the improved apparatus for the Three Gorges granite under high strain rate. It is found that strain rate effect is obvious and dynamic compression failure of the test simples can be divided into three patterns; i.e. edge fall apart, core no damage and completely failure. The failure mechanism of the rock is discussed; and the effects of strain rate on dynamic elastic modulus and dynamic compression strength are analyzed. Finally, a dynamic failure criterion of rock based on the Hoek-Brown failure criterion is proposed.

Key words: dynamic property of rock, split Hopkinson pressure bar, high strain rate, dynamic compression test, dynamic split tests, dynamic failure criterion

CLC Number: 

  • TU 459
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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