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The measurement of the in-situ stress state by acoustic emission method (AEM) in weak rocks
| Content Provider | Scilit |
|---|---|
| Author | Watanabe, H. Tano, H. Aydan, Ö. Ulusay, R. Tuncay, E. Bilgin, A. Seiki, T. |
| Copyright Year | 2020 |
| Description | Book Name: Rock Stress |
| Abstract | The overcoring and hydraulic-fracturing methods arewidely used for in-situ stress measurements. However, their use is restricted to the construction of civil engineering structures of great significance due to their high cost. Furthermore, it becomes quite difficult to apply these techniques to rocks, which yield. In addition, the stress measurements in weak rock are also extremely difficult due to problems in attaching the strain gauges to the borehole wall. The authors have been recently performing stress measurements using the acoustic emission method (AEM) in Turkey as well as in Japan. The applications generally involve weak sedimentary rocks such as marl, shale, tuff and limestone and samples are gathered at depths less than 150 m. The samples gathered at Cappadocia region, Orhaneli and Demirbilek open-pit mines in Turkey and Oya tuff underground quarry in Japan are used to infer the crustal stresses and they are compared with those obtained from other methods such as focal plane solution method and fault striation method. The results indicated that the results obtained from the AEM are reliable and consistent with those inferred from other methods even in weak rocks. The authors report the results of measurements and discuss the suitability of the AEM for inferring in-situ stresses in weak rock in this articleThe overcoring and hydraulic-fracturing methods are widely used for in-situ stress measurements. However, their use is restricted to the construction of civil engineering structures of great significance due to their high cost. The performing stress measurements using the acoustic emission method. The samples were gathered at Cappadocia region, Orhaneli and Demirbilek open-pit mines in Turkey and Oya tuff underground quarry in Japan. The authors present the results of measurements and discuss the suitability of the acoustic emission method (AEM) for inferring in-situ stresses in weak rocks in this article. The AEM is based on the principle of Kaiser effect, which was put forward in 1950s. Therefore, the authors feel that the acoustic emission method AEM should be a very useful tool for geo-engineers in designing rock structures as well as geo-scientists for inferring the crustal stresses. Orhaneli open-pit mine is one of the major lignite mine in Marmara region of Turkey. |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2010-0-34042-5&isbn=9781003078890&format=googlePreviewPdf |
| Ending Page | 394 |
| Page Count | 6 |
| Starting Page | 389 |
| DOI | 10.1201/9781003078890-59 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2020-12-17 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Rock Stress Mining and Mineral Processing Structures Rocks Hydraulic Fracturing Tuff Underground Cappadocia Region Performing Stress Demirbilek Open Great Significance Civil Engineering |
| Content Type | Text |
| Resource Type | Chapter |
