The best known case is the 103 m high Koyna dam in India which was seriously damaged during the 1967 earthquake [1]. The largest damages were the horizontal cracks on both the upstream and the ...
Fault associated with the 1967 M 6.3 Koyna earthquake, India: A review
The Koyna region in western India, where recurrent seismicity has been occurring since the impoundment of the Shivajisagar (Koyna) reservoir in 1962, is a classical site for studying the mechanism(s) of reservoir-triggered seismicity (RTS) (Gupta and Rastogi, 1976, Gupta, 1992, Gupta, 2002) (Fig. 1).The largest triggered earthquake of M ∼ 6.3 occurred in 1967, which shook the entire Koyna ...
Koyna earthquakes: a review of the mechanisms of reservoir ...
Koyna region in western India experienced more than 1,00,000 earthquakes of different magnitudes (M ~ 1.0-6.3) in the past five decades. Earthquakes in this region are believed to be triggered by a change in fluid pressure due to the percolation of the reservoir (Koyna and Warna reservoir) water into the subsurface. A drilling program was set up by the Ministry of Earth Sciences, India and ...
Seismic hazard assessment of Koyna region, Peninsular India: using
Earthquakes are occurring in a 20 × 30 Km area around Koyna since the impoundment of Shivajisagar Reservoir (Koyna Dam) in 1962, including the largest triggered earthquake of M6.5 on December 10, 1967, and 21 earthquakes of > M5.0 occurred since 1962 (Figs. 7 and 1).These events were further enhanced by the impoundment of the nearby Warna Reservoir in 1993 (Gupta, 2011).
Studies of Artificial Water Reservoir Triggered Earthquakes at Koyna
Anthropogenic seismicity has been observed due to filling of artificial water reservoirs, geothermal and natural oil/gas production, and gold/coal mining under favorable geological conditions. Among these, artificial water reservoir triggered seismicity (RTS) is most prominent, with over 200 sites globally where RTS has been observed, including 5 sites where earthquakes exceeding M 6 magnitude ...
PDF Koyna, India: A very prominent site of artificial water reservoir
address the issue of near-Beld studies of earthquakes. 2. Early investigations. Koyna dam is located near the west coast of India in a 65 Ma-old Cood basalt province. The 807.2 m long and 103.2 m high, rubble concrete Koyna dam is built on the Koyna river and was impounded in 1962. It holds 2780 million m3of water.
Seismic fracture of koyna dam: Case study
Seismic fracture of koyna dam: Case study. O. A. Pekau, O. A. Pekau. Department of Civil Engineering, Concordia University, Montreal, Canada H3G 1M8 ... the cracking process of the Koyna dam prototype subjected to the 1967 earthquake is evaluated numerically by employing the aforementioned techniques. From the results, it is concluded that both ...
Earthquake damage estimation of the Koyna concrete gravity dam using
After verification of the nonlinear behavior of concrete using E-GFVM, the ability of the proposed method for analysis of a real-world case under time-dependent conditions, namely Koyna concrete gravity dam which experienced a destructive earthquake in 1967, is tested, considering the impacts of dam-reservoir interaction.
Finite volume analysis of dam breaking subjected to earthquake
In order to be sure of the accuracy of the results, before examining the failure mechanisms, the verifications of utilized methods in the case of dam failure were proven using experimental and numerical studies from literature. The Koyna Dam earthquake of magnitude 6.5 (11 December 1967) is investigated as a test case.
Seismic fracture of koyna dam: Case study
The two numerical procedures previously presented by the authors to model crack closure during seismic fracture of concrete gravity dams are employed herein to study the 1967 performance of the Koyna dam. First, a brief description of the general procedure is given, followed by the detailed formulation of the force method for simulation of crack closure.
A study of the Koyna earthquake of December 10, 1967
The two major earthquakes of this region have similar foreshock-aftershock pattern, corresponding to type 2 of Mogi's (1963) models. Aftershocks of this earthquake are related by a function Log N = a + bM, value of b being −0.8. Possibility of predicting maximum expected magnitude at a certain seismic activity level of Koyna region has been ...
Seismic fragility analysis of the Koyna gravity dam with layered rock
The Koyna dam is performing the nation-building work till date; however, the actual damages in the dam from recent earthquakes have shown the necessity of risk assessment analysis. ... [36] performed a case study of a high concrete arch dam for the seismic fragility analysis based on instability failure mode. It was distinguished that the ...
PDF Studies of Artificial Water Reservoir Triggered Earthquakes at Koyna
EARTHQUAKE FORECAST AT KOYNA Way back in 2001 a case was made by Gupta (2001) that short time earthquake forecast may be feasible at Koyna. It was because the earthquakes occur in a small region, some 30 km x 20 km (Fig.1), are shallow (mostly within 10 km), there is no other source of earthquakes within 50 km of Koyna Dam and above all the ...
PDF Comparative SeiSmiC performanCe of Koyna and Corra Linn damS ...
The Koyna earthquake is a rare incident of reservoir induced seismicity. The earthquake caused significant cracking at the upstream and downstream faces of non-overflow (NOF) monoliths of the dam and resulted in an increase in leakage ... CaSe StUdy : Koyna dam 2.1 description To evaluate and compare the seismic performance of concrete gravity ...
50 years after Koyna, lessons from the mega earthquake
On December 10, 1967, Koyna in Maharashtra hit the headlines globally. And it left seismologists shaken. A devastating 6.3 magnitude earthquake in Koyna, where a grand, huge dam was built in 1962 ...
Koyna Dam
The Koyna Dam is one of the largest dams in Maharashtra, India. ... Indian scientific establishment has formulated an ambitious project to drill a deep borehole in the region and intensely study the earthquake activity. This would help in better understanding and possible forecast of earthquakes.
Koyna, India: A very prominent site of artificial water reservoir
Abstract Anthropogenic activities such as gold and coal mining, oil and gas production, filling of artificial water reservoirs, harnessing of geothermal energy, etc., have induced/triggered earthquakes. Koyna dam, located in the Deccan volcanic province of India, was impounded in 1962, and soon after tremors were reported from the vicinity of Koyna dam. The largest triggered earthquake of ...
Landslide hazard cascades can trigger earthquakes
Here, we use the 2018 Baige landslide hazard cascades (Fig. 1) on the Tibetan plateau as a case study to investigate earthquake triggering by LDLs. We quantify the spatiotemporal evolution of ...
Seismic fracture of koyna dam: Case study
Finally, the cracking process of the Koyna dam prototype subjected to the 1967 earthquake is evaluated numerically by employing the aforementioned techniques. From the results, it is concluded that both procedures for simulating the impact effect of crack closing predict complete penetration of the crack through the upper part of the dam, which ...
A Case Study on Koyna Dam
The Dam is founded on basalt rock. Koyna is one of 7. Noise the major Hydro Electric Projects in the Country. The dam Noise is a term used to cover random measurement impounds 2980.34 MCum water to generate 1960 MW variation caused by external factors, creating lack of power. precision and accuracy.
PDF Triggering of earthquakes at Koyna, India and hammer ...
The Koyna region became seismically active immediately after the impoundment of the Shivajisagar Lake formed by the Koyna Dam in 1962 (Harinarain and Gupta 1968; Gupta et al. 1969). So far, the largest reservoir-triggered seismicity (RTS) earthquake of M 6.3 occurred on 10 December 1967. It was preceded by a M 5.5 earthquake on 13 September 1967.
Earthquakes may not be primary driver of glacial lake outburst floods
Clearly, despite the intuitive link between seismic activity destabilizing dams to cause catastrophic floods, the local Andes and global evidence so far does not empirically support the assumption ...
COMMENTS
The best known case is the 103 m high Koyna dam in India which was seriously damaged during the 1967 earthquake [1]. The largest damages were the horizontal cracks on both the upstream and the ...
The Koyna region in western India, where recurrent seismicity has been occurring since the impoundment of the Shivajisagar (Koyna) reservoir in 1962, is a classical site for studying the mechanism(s) of reservoir-triggered seismicity (RTS) (Gupta and Rastogi, 1976, Gupta, 1992, Gupta, 2002) (Fig. 1).The largest triggered earthquake of M ∼ 6.3 occurred in 1967, which shook the entire Koyna ...
Koyna region in western India experienced more than 1,00,000 earthquakes of different magnitudes (M ~ 1.0-6.3) in the past five decades. Earthquakes in this region are believed to be triggered by a change in fluid pressure due to the percolation of the reservoir (Koyna and Warna reservoir) water into the subsurface. A drilling program was set up by the Ministry of Earth Sciences, India and ...
Earthquakes are occurring in a 20 × 30 Km area around Koyna since the impoundment of Shivajisagar Reservoir (Koyna Dam) in 1962, including the largest triggered earthquake of M6.5 on December 10, 1967, and 21 earthquakes of > M5.0 occurred since 1962 (Figs. 7 and 1).These events were further enhanced by the impoundment of the nearby Warna Reservoir in 1993 (Gupta, 2011).
Anthropogenic seismicity has been observed due to filling of artificial water reservoirs, geothermal and natural oil/gas production, and gold/coal mining under favorable geological conditions. Among these, artificial water reservoir triggered seismicity (RTS) is most prominent, with over 200 sites globally where RTS has been observed, including 5 sites where earthquakes exceeding M 6 magnitude ...
address the issue of near-Beld studies of earthquakes. 2. Early investigations. Koyna dam is located near the west coast of India in a 65 Ma-old Cood basalt province. The 807.2 m long and 103.2 m high, rubble concrete Koyna dam is built on the Koyna river and was impounded in 1962. It holds 2780 million m3of water.
Seismic fracture of koyna dam: Case study. O. A. Pekau, O. A. Pekau. Department of Civil Engineering, Concordia University, Montreal, Canada H3G 1M8 ... the cracking process of the Koyna dam prototype subjected to the 1967 earthquake is evaluated numerically by employing the aforementioned techniques. From the results, it is concluded that both ...
After verification of the nonlinear behavior of concrete using E-GFVM, the ability of the proposed method for analysis of a real-world case under time-dependent conditions, namely Koyna concrete gravity dam which experienced a destructive earthquake in 1967, is tested, considering the impacts of dam-reservoir interaction.
In order to be sure of the accuracy of the results, before examining the failure mechanisms, the verifications of utilized methods in the case of dam failure were proven using experimental and numerical studies from literature. The Koyna Dam earthquake of magnitude 6.5 (11 December 1967) is investigated as a test case.
The two numerical procedures previously presented by the authors to model crack closure during seismic fracture of concrete gravity dams are employed herein to study the 1967 performance of the Koyna dam. First, a brief description of the general procedure is given, followed by the detailed formulation of the force method for simulation of crack closure.
The two major earthquakes of this region have similar foreshock-aftershock pattern, corresponding to type 2 of Mogi's (1963) models. Aftershocks of this earthquake are related by a function Log N = a + bM, value of b being −0.8. Possibility of predicting maximum expected magnitude at a certain seismic activity level of Koyna region has been ...
The Koyna dam is performing the nation-building work till date; however, the actual damages in the dam from recent earthquakes have shown the necessity of risk assessment analysis. ... [36] performed a case study of a high concrete arch dam for the seismic fragility analysis based on instability failure mode. It was distinguished that the ...
EARTHQUAKE FORECAST AT KOYNA Way back in 2001 a case was made by Gupta (2001) that short time earthquake forecast may be feasible at Koyna. It was because the earthquakes occur in a small region, some 30 km x 20 km (Fig.1), are shallow (mostly within 10 km), there is no other source of earthquakes within 50 km of Koyna Dam and above all the ...
The Koyna earthquake is a rare incident of reservoir induced seismicity. The earthquake caused significant cracking at the upstream and downstream faces of non-overflow (NOF) monoliths of the dam and resulted in an increase in leakage ... CaSe StUdy : Koyna dam 2.1 description To evaluate and compare the seismic performance of concrete gravity ...
On December 10, 1967, Koyna in Maharashtra hit the headlines globally. And it left seismologists shaken. A devastating 6.3 magnitude earthquake in Koyna, where a grand, huge dam was built in 1962 ...
The Koyna Dam is one of the largest dams in Maharashtra, India. ... Indian scientific establishment has formulated an ambitious project to drill a deep borehole in the region and intensely study the earthquake activity. This would help in better understanding and possible forecast of earthquakes.
Abstract Anthropogenic activities such as gold and coal mining, oil and gas production, filling of artificial water reservoirs, harnessing of geothermal energy, etc., have induced/triggered earthquakes. Koyna dam, located in the Deccan volcanic province of India, was impounded in 1962, and soon after tremors were reported from the vicinity of Koyna dam. The largest triggered earthquake of ...
Here, we use the 2018 Baige landslide hazard cascades (Fig. 1) on the Tibetan plateau as a case study to investigate earthquake triggering by LDLs. We quantify the spatiotemporal evolution of ...
Finally, the cracking process of the Koyna dam prototype subjected to the 1967 earthquake is evaluated numerically by employing the aforementioned techniques. From the results, it is concluded that both procedures for simulating the impact effect of crack closing predict complete penetration of the crack through the upper part of the dam, which ...
The Dam is founded on basalt rock. Koyna is one of 7. Noise the major Hydro Electric Projects in the Country. The dam Noise is a term used to cover random measurement impounds 2980.34 MCum water to generate 1960 MW variation caused by external factors, creating lack of power. precision and accuracy.
The Koyna region became seismically active immediately after the impoundment of the Shivajisagar Lake formed by the Koyna Dam in 1962 (Harinarain and Gupta 1968; Gupta et al. 1969). So far, the largest reservoir-triggered seismicity (RTS) earthquake of M 6.3 occurred on 10 December 1967. It was preceded by a M 5.5 earthquake on 13 September 1967.
Clearly, despite the intuitive link between seismic activity destabilizing dams to cause catastrophic floods, the local Andes and global evidence so far does not empirically support the assumption ...