Abstract:In recent years, underground mines in Nevada are increasingly exploiting in weak mineralized zones at greater depths that are intensely fractured and highly altered. The mechanical behavior of these rock masses ranges between weak rock and very stiff soil. A common limitation for design of underground mining excavations in these types of rock masses is absence of in situ geotechnical data. This limitation is generally overcome by estimating in situ mechanical behavior from empirical relationships so that the c… Show more
“…4, when the estimated E m values using the exponential function suggested in this study were plotted versus the experimental E m values given by Kallu et al (2015), distribution of the data was significant except of Data-8A (Fig. 4A).…”
Section: Ramamurthy (2004)mentioning
confidence: 82%
“…Em ¼ E i exp À0:0035½5ð100 À RMRÞ Recently, a research paper of Kallu et al (2015) on a field test for determination of E m has been published. Kallu et al (2015) designed a portable plate loading device (PPLD) and fabricated to determine the E m .…”
Section: Ramamurthy (2004)mentioning
confidence: 99%
“…To control performance of the exponential function suggested in this study, E m values have been estimated using the RMR 76 values given by Kallu et al (2015). The estimated E m values using the exponential function were compared with the in-situ E m values given by Kallu et al (2015) (Fig.…”
Section: Ramamurthy (2004)mentioning
confidence: 99%
“…The estimated E m values using the exponential function were compared with the in-situ E m values given by Kallu et al (2015) (Fig. 4).…”
Section: Ramamurthy (2004)mentioning
confidence: 99%
“…Kallu et al (2015) designed a portable plate loading device (PPLD) and fabricated to determine the E m . The PPLD allows one to perform low cost and relatively quick in situ deformability tests to be performed on weak rock masses in underground mines.…”
“…4, when the estimated E m values using the exponential function suggested in this study were plotted versus the experimental E m values given by Kallu et al (2015), distribution of the data was significant except of Data-8A (Fig. 4A).…”
Section: Ramamurthy (2004)mentioning
confidence: 82%
“…Em ¼ E i exp À0:0035½5ð100 À RMRÞ Recently, a research paper of Kallu et al (2015) on a field test for determination of E m has been published. Kallu et al (2015) designed a portable plate loading device (PPLD) and fabricated to determine the E m .…”
Section: Ramamurthy (2004)mentioning
confidence: 99%
“…To control performance of the exponential function suggested in this study, E m values have been estimated using the RMR 76 values given by Kallu et al (2015). The estimated E m values using the exponential function were compared with the in-situ E m values given by Kallu et al (2015) (Fig.…”
Section: Ramamurthy (2004)mentioning
confidence: 99%
“…The estimated E m values using the exponential function were compared with the in-situ E m values given by Kallu et al (2015) (Fig. 4).…”
Section: Ramamurthy (2004)mentioning
confidence: 99%
“…Kallu et al (2015) designed a portable plate loading device (PPLD) and fabricated to determine the E m . The PPLD allows one to perform low cost and relatively quick in situ deformability tests to be performed on weak rock masses in underground mines.…”
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