›› 2006, Vol. 27 ›› Issue (S1): 113-117.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Stability analysis of high phosphogypsum dam

ZHANG Chao1, YU Ke-jing2, YANG Chun-he1, CHEN Jian-wen1   

  1. 1. Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Ningbo East-China Engineering Survey Institute of Nuclear Industry, Ningbo 315800, China
  • Received:2005-04-10 Published:2006-12-15

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Abstract: Concerning the rare study on mechanical properties of phosphogypsum, the relationship of strength with confining pressure is investigated by the triaxial compression experiments with high confining pressure. From the experiment results, it is found that the strength will increase with the increasingly confining pressure and the tendency is very obvious. It is dangerous to use the strength parameters obtained from the conventional triaxial compression experiments to analyze the stability of high phosphogypsum dam. Taking a high phosphogypsum dam for example, the stability of the dam is analyzed, And the results indicate that the safety factor would obviously decrease if the strength reduction of phosphogypsum in high confining pressure were taken into account. A conclusion is drawn that the strength reduction of phosphogypsum in high confining pressure is evident, and it is necessary to consider the strength reduction of phosphogypsum when analyzing the stability of high strength reduction of phosphogypsum dam.

Key words: phosphogypsum, high dam, stability analysis, strength reduction

CLC Number: 

  • TU 454
  • 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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