Engineering Geophysics

Dr.H.V.S. Satyanarayana, Senior Principal Scientist & Divisional Head Project Leader: MLP-6203-28(HVS)

Development of methodology with special emphasis on 3D Seismics and Airborne Geophysical Studies for detection of Shallow Surface Features and Mineral Exploration, Site Characterization, Engineering, Geotechnical and Archaeological applications .

Engineering Geophysics

Ongoing Projects:-

Project Name

Project Number

3D HRS Survey, Jharsiguda, Orissa

SSP-680-28(HVS)

Shale gas CMPDI

GAP-673-28(HVS)

RELIANCE GAS PIPELINE PROJECT

SSP -672-28(HVS)

NPCIL : Chutka, Chaya Mithivirdhi

SSP-689-28(HVS)

NPCIL : Mahibanswara

SSP-705-28(HVS)

NPCIL : Gorakhpur

SSP-696-28(HVS)

Site Characterisation Studies- Central India -

HEART

3D high resolution studies for coal and lignite exploration

SHORE

NPCIL : Gorakhpur

SSP-679-28-(HVS)

Magneto telluric studies

INDEX

Heliborne Geophysical Surveys

Sponsored by AMD

Geophysical Well Logging Studies at Koyna-Warna region

GAP-655- 28(NPR)
Sponsored by MoES

K-Ten Potassium fertilizer technology to empower the nation

CSIR Network Project

Integrated Geophysical Studies for mineral exploration- Rajasthan

Sponsored by MECL

  1. Studies for Nuclear Power Plant sites:
  2. A major concern while setting up a Nuclear Power Plant is the presence of active/capable faults in the vicinity of the site. An active/capable fault is the one which can generate an earthquake in which elastic strain that has gradually accumulated across a fault is suddenly released driving motion on the fault. The motion may last for several seconds to few minutes generating both strong ground motion and the static deformation of the ground which decreases gradually away from the fault on either side. In case the fault ruptures the surface, then static displacements are discontinuous across the fault at the ground surface, constituting a primary seismic hazard. The other important factor in assessing the seismic hazard is the amplification of strong ground motion caused due distant seismic sources, especially in lower frequencies. Thus, while conducting investigations for NPP, it is important to evaluate the seismic hazard at different scales.

    2D seismics-NPCIL.JPG

  3. Site characterization studies in central Indian province for earthquake hazard assessment:
  4. The characteristics of seismic waves generated and propagated through different geological formations during the earth quakes will be dependent on local site conditions. It is evident from the past history that the damage due to earth quakes is very high in the regions with thick alluvial cover. Most of such damage is attributed to the amplification of certain frequencies in the near surface alluvium cover during the propagation of waves. The shear wave velocity of the top soils has become an important tool to estimate the frequencies and amplifications during ground motion.In central India, areas are selected to assess the seismicity and geotechnical characteristics of the subsurface in and around Lucknow, Kanpur and Allahabad.

    Figure 2: A 2D shear wave velocity section at Lucknow

    2

  5. 2D/3D High Resolution Seismic Studies:
  6. Coal Bed Methane (CBM) is a natural gas produced from the coal seams. Coal Bed Methane is a mixture of hydrocarbons, dominantly methane with other minor amount of other gases like carbon dioxide and nitrogen. The amount of methane held in coal seam depends on the age, moisture content and depth of the coal. High rank coals buried at great depths (>300-1200m) are suitable for the exploitation of coal bed methane (CBM). The shallower nature of the investigations require high resolution seismic profiling in which the seismic wave is rich in high frequencies and the recording system is designed to retain as much of the high frequency reflections as possible. Identification of faults, thickness and depth of coal seams are very much essential in CBM exploration as these factors are responsible for the formation of Methane. In this technique the property of acoustic impedance is of much importance in identifying different rock formations, which are associated with coal, and it has been successfully implemented.
    3D seismic studies to map coal horizons and to delineate the associated structural features at Belphar area, Jharsuguda , Orissa sponsored by CMPDI. As a part 3D seismic study program, 10Sq. Km area was selected for identification of coal beds up to a depth of 1.5 km near Belpahar, Jahrsuguda,Orissa. Data acquisition work is in progress.

    3D HRSS Study area near Belpahar, Odisha.T 15000 Vibrator

  7. Geotechnical studies near Nuclear Power plant (NPP) site, Gorakpur, Haryana sponsored by NPCIL.
  8. Geophysical Well Logging Studies at Koyna-Warna region sponsored by MoES.
  9. Seismic studies along pipe line route for Reliance.
  10. Magneto telluric studies in Eastern Ghat Mobile Belt, Eastern Dharwar Craton and Cuddapa basin: INDEX Project

The objective of the MT studies is to image electrical conductivity structure of segments of the Indian lithosphere. Available MT data and new data will be used to achieve this objective. New MT data will be obtained in SISR and Himalayan regions. The data will be processed using robust codes and modeling will be done using 2D, 3D and anisotropy schemes. The obtained structure will be interpreted in terms of causative geological structures.

Magnetotelluric data collected along a 350 km profile from Chamarajnagar to Hirekerur. MT data at 34 stations are being processed and impedance values are obtained. Preliminary models show extension of conductors associated with Chitradurga Shearzone up to Moho depths.

Staff

Name Designation
Dr.H.V.S. Satyanarayana Senior Principal Scientist & Project Leader

K.Satish Kumar

Scientist

D.Mysaiah

Scientist,Activity Leader(In absence of PL)

R.S.K.Srinivasulu

Sr.Technical Officer-3

K.Ratna Mala

Sr.Technical Officer-2

G.S.Srinivas

Sr.Technical Officer-2

K.V.V.Seshagiri

Sr.Technical Officer-3

B.R.K.Venkatapathi

Sr.Technical Officer-2

K.N.S.S.S.Srinivas

Technical Officer

P.Pavan Kishore

Technical Officer

Ashok Kumar

Technical Officer

G.Vasudevan

Technical Officer

M.Srihari Rao

Technical Officer

G.Suresh

Technician

K.Dhanam Kusireddi

Technical Assistant

Project Consultant: Dr.T.Seshunarayana, Chief Scientist (Retd)

Mineral & Engineering &Air Borne Geophysics