4 publications
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Published Subscription
Estimation of Burden Rock Movement using High Speed Videography: Case Study of A Limestone MineBy V. R. Sastry, B. Rajasekhar, G Raghu Chandra
Abstract: In an opencast mine involving hard rock/deposit excavation, blasting becomes a very important activity. Effective usage of explosive energy to fragment and displace the hard strata results in considerable savings. However, the occurrence of blasts in mines is so rapid that the naked eye cannot detect the process. High speed videography can provide the progress of blast in millisecond time scale needed to analyze the happenings in the blast. An …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 8, Issue 1, 2022 · pp. 14–25 Read article →
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Modelling of Twin Underground Caverns using 3DEC: A Case StudyBy Sreedevi A R, V. R. Sastry, N. Channabassamma
Abstract: India is poised to create large underground caverns, for storing crude oil and LPG. Presently there are three such facilities. The dependence of the country on Crude oil and petroleum products requires creating large underground caverns, from the strategic point of view. An attempt is made to present a case study of the stability of Twin Caverns driven adjacent to each other in Southern India. The host rock is granitic …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 8, Issue 1, 2022 · pp. 1–13 Read article →
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Protection of Saddle Dam from Ground Vibrations caused due to Tunnel Blasts: A Case StudyBy V. R. Sastry
Abstract: A water tunnel of 150m length is being excavated, a portion of which is passing about 20m below the flank of Bhadra Saddle Dam, made up of compacted soil. Tunnel encountered Fair to Very Strong rock formation, requiring usage of explosive energy for the excavation. Safe tunnel blasts were designed for different chainages, depending up on the rock formation, in order to protect the Saddle Dam from the ground vibrations …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 4, Issue 2, 2018 · pp. 16–22 Read article →
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Tunnel Stability under Different Conditions: Analysis by Numerical and Empirical ModelingBy V. R. Sastry, K. Ram Chandar, S. Madhumitha, T. G. Sruthy
Abstract: Abstract Stability of the tunnels under different geotechnical conditions can be effectively assessed using numerical modelling techniques. In this paper, the stability of tunnel was analyzed along with support requirement, based on stress distribution around tunnel, using the finite element modelling software – NISA. A case study was taken up of a tunnel proposed by Karnataka Netravari Nigam Limited near Siddapura, Udupi District, Karnataka, India. Results from finite element modeling …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 1, Issue 2, 2015 · pp. 1–13 Read article →