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SUN Dongsheng, CHEN Qunce, ZHANG Yanqing. 2020. Analysis on the application prospect of ASR in-situ stress measurement method in underground mine. Journal of Geomechanics, 26(1): 33-38. doi: 10.12090/j.issn.1006-6616.2020.26.01.003
Citation: SUN Dongsheng, CHEN Qunce, ZHANG Yanqing. 2020. Analysis on the application prospect of ASR in-situ stress measurement method in underground mine. Journal of Geomechanics, 26(1): 33-38. doi: 10.12090/j.issn.1006-6616.2020.26.01.003
shu

Analysis on the application prospect of ASR in-situ stress measurement method in underground mine

  • 1.

    Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

  • 2.

    Key Laboratory of Active Tectonics and Crustal Stability Assessment, Beijing 100081, China

Received Date:  11 September 2019
Revised Date:  25 December 2019
Publish Date:  29 February 2020
    Abstract

  • Present in-situ stress state is an important data for the underground construction, tunnel stability analysis and rock burst (coal and gas burst) prediction in underground mine. At present, in-situ stress measurement in underground mine is mainly based on hollow inclusion gauge method. In practice, it is found that the stress meter of hollow inclusion gauge often fails to fully adhere to the borehole wall, which brings the low success rate and high labor intensity. In this paper, the anelastic strain recovery (ASR in short) in-situ stress measurement method based on the oriented cores is introduced. The effectiveness of ASR method are analyzed by comparing the test results with that obtained through the hydraulic fracturing method. The reliability of the ASR method is also analyzed by the repeatable test results. The results show that the maximum value of mean deviation parameter is 6.29%. The ASR method will have broad application prospects on in-situ stress measurement in underground mine with the advantages of safety, high efficiency and immunity to the limitation of depth and measurement environment.

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