Vikalp KumarNational Institute of Rock Mechanics · Engineering Seismology
Vikalp Kumar
Ph.D.
Microseismic Monitoring of Mines & Hydropower Plant and
Seismic Monitoring of Dams
About
11
Publications
8,717
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30
Citations
Introduction
Vikalp Kumar currently works at the Engineeering Seismology department, National Institute of Rock Mechanics, Bengaluru. He specializes in microseismic monitoring and and has a fair knowledge of mining seismology, underground powerhouse and dam stability analysis during and post excavation. Vikalp is interested in understanding the dynamics of hydraulic fracturing of hydrocarbon reservoirs.
Additional affiliations
April 2016 - present
Position
- Scientist C
Description
- Seismologist working in the field of mining, dam, underground powerhouse, reservoir and tunnels.
April 2011 - present
Position
- Scientist B
Description
- Microseismics data Acquisition,Processing and Interpretation
Education
August 2004 - June 2007
Publications
Publications (11)
Construction of any excavation adds to the re-distribution of stresses around abutment and crown. This is stabilised by providing extra reinforcement. When a large underground cavern is excavated, stress re-distribution around abutment is obvious. Underground powerhouse cavern of Tala Hydropower Plant with adverse geological setting is one such cav...
The geomechanical behaviour of the main tunnel of an underground powerhouse structure in the Himalayan region after its construction is a challenge for the geotechnical experts due to the issues of time‐dependent deformation and failure of the rock mass support system. The machine hall of the underground powerhouse of Tala Hydropower Plant facing s...
Coal and fossil fuel, a natural resource is being used for electricity production from in India from than a century but keeping the environment in view, society is shifting towards green energy like hydropower. The great Himalaya having the huge potential of hydropower plant and such powerplants are being constructed from
last few decades rapidly c...
The long-term stability of an underground hydroelectric powerhouse cavern, which depends on the rockmass deformation rate, is paramount for tunnel engineers. The underground powerhouse cavern of the Tala Hydroelectric Project (THP), Bhutan, had faced several strata instabilities issues during its construction and even post-construction. So, a Micro...
Long term stability of an underground cavern is significant for construction engineers. For structures constructed in the geologically active regions of the Himalayas, continuous monitoring is required to ward off the sustained threats due to seismic activities and associated local geological hazards. Underground powerhouse of Tapovan Vishnugad Hyd...
Long term stability of an underground cavern is significant for construction engineers. For structures constructed in the geologically active regions of the Himalayas, continuous monitoring is required to ward off the sustained threats due to seismic activities and associated local geological hazards. Underground powerhouse of Tapovan Vishnugad Hyd...
Rock mass equilibrium is disturbed when rocks undergo excavation through mechanical or blasting techniques. When the disturbance is rapid, it leads to unstable zones in the structure even after completion of structure in long term, and hence it becomes essential to monitor such underground excavated structure behavior continuously using microseismi...
The study of micro-cracks, shear zone and redistribution of stress after excavation in the rockmass is required for a stability analysis of the underground structure. The powerhouse of the Tapovan Vishnugad Hydropower Project (TVHPP) of NTPC Ltd. is located in the seismic zone V of India and is positioned at the junction of the middle and higher Hi...
The powerhouse of Tala hydropower plant (THP) of Druk Green Power Corporation (DGPC) Ltd. having installed capacity of 1020 MW is adjacent to the Main Central Thrust (MCT) and Main Boundary Thrust (MBT). The project area is located at 3.0 km south to the Chukka city of Bhutan at an average depth of +500 m having adverse geological conditions and fa...
The powerhouse of Tapovan Vishnugad Hydropower project (TVHPP) of NTPC is located in the tail of the Great Himalaya range in the Chamoli district, Uttrakhand and is located at +300m depth having adverse geological conditions. The project area is situated near the northern side of MCT around 2.0 Km and lies in the seismic zone V of India. This site...
Questions
Questions (42)
Which underground hard rock or metal mines are currently In India facing the problem of rockburst? In India, underground min depths are increasing day by day but there is no report of rockburst, it is a surprise for Indian mining faterenity.
Mining induced seismicity increases as mine depth increases.
If anyone have information regarding rockburst in any Indian metallic mine, kindly share.
What are the major problems immediately after stoping/ development blast in an underground metal mine?
How to decide re-entry in an underground hard rock mine after stoping/development blast? What are the practical and ground problems being faced? Why is it closed for several days or weeks or sometimes a month after the stoping /development blast in some areas of a particular mine? Kindly reply. In addition to that please provide/advise me some literature also
How is re-entry after development/production blasts decided in underground hard rock metal mines?
How Omori's law can help in studying foreshock after a stoping/development blast in underground hard rock mine?
Which declustering methodology for seismic/ earthquake catalogue is suitable for the Bihar -Nepal region (Himalayan foothill region)?
How can I use CLUSTER2000 USGS software for declustering of earthquake catalogue? Sharing any video and PPT for showing the steps will be useful.
Madam/sir,
I have downloaded the earthquake data from NCS and USGA keeping the enter at Darbhanga, Bihar, India. I have to do the delcustering of this catalogue? Have anyone have a matlab programme for this or which method is suitable for the c=earthquake catalogue of this region?
How much radial distance should be considered when preparing an earthquake catalogue for Probabilistic seismic hazard analysis? What is the reason behind the consideration of that distance? Is there any particular formula or standard distance?
How much radial distance should be considered when preparing an earthquake catalogue for Probabilistic seismic hazard analysis? What is the reason behind consideration of that distance? Is there any particular formula or standard distance?
How can I convert the coda magnitude into moment magnitude? Is there any standard relationship follows world-wide, or this relationship varies region by region? If region by region, please share the same for Bihar/Nepal region.
How can I convert Coda Magnitude to Moment Magnitude? Is there any formula applicable world wide or , it varies region to region? If varies region to region, I need this formula for Bihar (India) and or Nepal region. This is required regarding Probalistic seismic hazard analysis (PSHA).
There is an underground powerhouse structure in the Himalayan region. In this structure, rockbolts and steel ribs were installed.
The rockbolts have load holding capacity of 57 tons but due to improper installation and poor rockmass condition, the final load-holding capacity of the rockbolt varies between 30 tons to 57 tons.
The load is increasing on the underground structure and at several locations, rockbolts are failing because the load reached 45 tons.
At the same time, steel rib has a compression capacity of 1.06 MN/m2 but at a few steel ribs, it has reached 1.33 MN/m2.
What are the geotechnical risks involved in such a situation in this underground rockmass structure?
What corrective measures would be necessary to handle such a situation in this underground rockmass structure?
What is the frequency range of seismometers for microearthquake monitoring in an around a nuclear power plant like structure? Which is better: short period seismometer/broadband seismometer/ 1 or 2 Hz Geophone?
Potency Displacement is used to evaluate the deformation in the vicinity of the excavation. I read the literature on seismic potency but how can I describe potency displacement and how this potency displacement can be calculated? How potency displacement may be useful in monitoring an underground powerhouse structure/tunnel after its construction?
How can one improve the accuracy of microseismic positioning algorithms or the reliability of microseismic interpretation?
How can I describe seismic potency displacement and how this potency displacement can be calculated in Earthquake seismology?
How seismic potency displacement may be useful in monitoring an underground powerhouse structure/tunnel after its construction?
