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Roy, Indranil
- A Geostatistical Approach to Resource Evaluation of Kalta Iron Ore Deposit, Sundergarh District, Orissa
Abstract Views :180 |
PDF Views:135
Authors
Affiliations
1 National Geophysical, Research Institute, Hyderabad - 500 007, IN
2 Indian School of Mines, Dhanbad, IN
1 National Geophysical, Research Institute, Hyderabad - 500 007, IN
2 Indian School of Mines, Dhanbad, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 67, No 4 (2006), Pagination: 542-545Abstract
No Abstract.- A Geostatistical Approach to Resource Evaluation of Kalta Iron Ore Deposit, Sundargarh District, Orissa
Abstract Views :228 |
PDF Views:21
Authors
B. C. Sarkar
1,
Indranil Roy
2
Affiliations
1 Department of Applied Geology, Indian School of Mines, Dhanbad - 826 004, IN
2 Central Ground Water Board, Guwahati, IN
1 Department of Applied Geology, Indian School of Mines, Dhanbad - 826 004, IN
2 Central Ground Water Board, Guwahati, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 5 (2005), Pagination: 553-561Abstract
The prime purpose of orebody modelling is to reliably estimate the distribution of in situ and recoverable tonnages and grades of a mineral deposit. Conventional methods of estimation, such as polygonal, triangular, crosssectional and distance weighting provide local estimates of an ore body. However, such estimates are not error associated. Classical statistical techniques provide error of estimation but ignore spatial relationships, A thorough geostatistical estimation with careful attention to geology of mineralization provides not only an adequate global reserve estimate but also a more reliable block-by-block mineral inventory with associated confidence in the block estimates. Such estimates are crucial for short- and long-term planning for exploration of mineral deposits to maximise net return on investment. Kalta iron ore deposit, located in the state of Orissa, has been studied for resource evaluation using geostatistical approach taking into account the geological parameters wherever necessary. Using exploratory drill hole information, a study starting from statistical distribution modelling through semi-variography to generation of ore inventory and gradetonnage relationships has been carried out to highlight the effectiveness of such modelling.Keywords
Geostatistics, Resource evaluation, lron Ore, Grade-Tonnage, Kalta, Orissa.- Prototype Development of MODELER: a Knowledge Based System for Identification of Iron Ore Deposit Types
Abstract Views :186 |
PDF Views:11
Authors
Indranil Roy
1,
B. C. Sarkar
1
Affiliations
1 Department of Applied Geology, Indian School of Mines, Dhanbad - 826 004, Jharkhand, IN
1 Department of Applied Geology, Indian School of Mines, Dhanbad - 826 004, Jharkhand, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 61, No 2 (2003), Pagination: 177-184Abstract
Geological knowledge of associations between field evidence and deposit types for a range of iron ore deposits have been consolidated and structured into a rule-based prototype system, MODELER that is able to assist exploration geologist for diagnosing iron ore deposit types. The system contains knowledge on eighteen deposit models represented by eighteen compound rules based on the concepts of type area and genetic type. This paper focuses on the design and development of the system and its application to five iron ore deposits from eastern India.Keywords
Expert System, Prototype, Iron Ore Deposit Types, Eastern India.- An empirical method for estimation of groundwater unit draft of energized agricultural tube wells
Abstract Views :185 |
PDF Views:80
Authors
Affiliations
1 Central Ground Water Board, Mid-Eastern Region, Patna 800 001, IN
1 Central Ground Water Board, Mid-Eastern Region, Patna 800 001, IN
Source
Current Science, Vol 121, No 6 (2021), Pagination: 840-845Abstract
Field methods for the estimation of groundwater unit draft are not fully reliable due to non-uniformity of draft in the time domain. In India, use of norm values recommended by the Groundwater Estimation Committee is in common practice. However, large-scale electrification in agricultural sector has drastically changed the agricultural pumping scenario. Conversion of diesel-powered pump sets to unmetered electrified pump sets and then to metered electrical pump sets has possibly invalidated the unit draft norms in many parts of the country. In this study, a computational method for groundwater unit draft estimation for energized agricultural tube wells is proposed. Availability of detailed minor irrigation census data is the key towards implementation of the method. The method involves utilization of several well-known empirical formulae for arriving at the desired numerical solution.Keywords
Agricultural tube wells, groundwater draft, norm values, numerical computational method, unit draft estimation.References
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