Application Study on Rigidity Correlation Method for Density Inversion of Rockfill

Pan Liu, Mingjie Zhao, Bowen Jiang, Kui Wang, Peng Jin

School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, China.

DOI: 10.4236/eng.2015.76029                

Abstract

Based on the theoretical model of rigidity correlation method, the study on application was carried out with Chinese Liyuan face rockfill dam as example. The linear relation equations between the rockfill rigidity and density measured by pit method were established, and the regression performance and accuracy of rigidity correlation method were analyzed by calculating the inversion values of density. The results show that the regression equations of rigidity correlation method are high significant so as to work out the rockfill density precisely; rigidity correlation method is used for density inversion of rockfill with minor error and namely high accuracy, which is proper with satisfactory results.

Keywords

Rigidity Correlation Method, Rockfill, Density Inversion, Regression Performance, Accuracy

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Li, P.W., Leng, Y.B. and Yuan, J.H. (1999) The Density Measurement of Rockfill Object by Additive Mass Method. Chinese Journal of Geophysics, 42, 422-427.
[2]	Song, X.H., Xiao, B.X., Gu, H.M., Zhang, X.Q., Deng, S.K. and Xu, S.F. (2004) Application of Method of Additive Mass to Density Measurement of Rock-Fill Object in Shuibuya Water Control Project. Coal Geology & Exploration, 32, 40-43.
[3]	Cai, J.X. and Zhang, Z.J. (2008) Analysis and Evaluation on Application Effect of Density Measurement of Rock Fill Object by Additive Mass Method. Journal of Yangtze River Scientific Research Institute, 25, 186-190.
[4]	Li, P.W. and Guo, X.S. (2009) In-Situ Test Technology in Density Measurement of Rockfill. Technical Supervision in Water Resources, 1, 39-41.
[5]	Xue, Y.F., Cui, L. and Li, P.W. (2010) Density Measurement of Rockfill by Use of Rigidity Correlation Method. Chinese Journal of Geotechnical Engineering, 32, 987-990.
[6]	Zhang, W.X. and Qian, Q.N. (2013) Application of Additive Mass Method to Compaction Testing of Liyuan Concrete Face Rock-Fill Dam. Water Resources and Hydropower Engineering, 44, 27-30.
[7]	Myers, R.M. (1990) Classical and Modern Regression with Applications. 2nd Edition, PWS-Kent Publishing Company, Boston.