Analyses and calculation of point load strength on rock mass damage index

WEN Lei; LUO Zhou-quan; YANG Shi-jiao; WANG Wei; ZHENG Kai-huan

doi:10.13374/j.issn2095-9389.2017.02.002

Volume 39 Issue 2

Feb. 2017

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WEN Lei, LUO Zhou-quan, YANG Shi-jiao, WANG Wei, ZHENG Kai-huan. Analyses and calculation of point load strength on rock mass damage index[J]. Chinese Journal of Engineering, 2017, 39(2): 175-181. doi: 10.13374/j.issn2095-9389.2017.02.002

Citation:

WEN Lei, LUO Zhou-quan, YANG Shi-jiao, WANG Wei, ZHENG Kai-huan. Analyses and calculation of point load strength on rock mass damage index[J]. Chinese Journal of Engineering, 2017, 39(2): 175-181. doi: 10.13374/j.issn2095-9389.2017.02.002

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Analyses and calculation of point load strength on rock mass damage index

doi: 10.13374/j.issn2095-9389.2017.02.002

1) School of Resources and Safety Engineering, Central South University, Changsha 410083, China
2) Nuclear Resources Engineering College, University of South China, Hengyang 421001, China

Received Date: 2016-05-09

Abstract

Abstract

A new method for calculating the damage index was first proposed-point load strength method (PLSM), based on the scene point loading strength test results and the damage theory. In order to verify the reliability and accuracy of the method and demonstrate the relationship between the damage index and integrity index which has been computed using this method, a series of theoretical inferences, in-situ rock mass acoustic tests and the lab rock acoustic tests have been carried out. The results show that the damage index and rock mass integrity coefficient have good consistency. The damage index calculated by using this method is correspondent with the change trend of rock mass damage extent within the scope of the loose circle. The error value of measured and theoretical values is less than 7%. It shows that calculating the damage index through the method has high accuracy and reliability.
- strength damage index,
- point load strength,
- integrity coefficient,
- acoustic wave,
- joints

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References(3)

References

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