ICGCM Papers:
Ground Control Monitoring Systems and Practices
 
 
A Study of Strata Behavior Characteristics During Mass Exploitation of Underground Coal Deposits for Continuous Miner Panel in Indian Mines
33rd International Conference on Ground Control in Mining
A Study of Strata Behavior Characteristics During Mass Exploitation of Underground Coal Deposits for Continuous Miner Panel in Indian Mines
by
Sanjay Kumar Singh, Coal India Limited, Bishrampur, IndiaSingam Jayanthu, National Institute of Technology, Rourkela, IndiaChandrashekhar Singh, Coal India Limited, Kolkata, India
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[Conference] 33rd International Conference on Ground Control in Mining
[Price] Free  [Comments] 0
[Topical Area] Ground Control Monitoring Systems and Practices
[Author] Sanjay Kumar Singh, Coal India Limited, Bishrampur, IndiaSingam Jayanthu, National Institute of Technology, Rourkela, IndiaChandrashekhar Singh, Coal India Limited, Kolkata, India
[Abstract] 
Key Conclusions:
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Based on the results of the above mention field investigation and verification of numerical models with compare to empirical designed Roof bolt support system our study drawn following concluding remark:- • During widening of galleries, a maximum of 16mm roof convergence is observed in NCPH Mine. •Widening of galleries upto 6m has shown no considerable deformation or convergence but greater than 6m wide galleries has resulted in the formation of undulated roof and floor conditions in before modification of support system. •Before this study, there was use of quick setting cement capsule in roof bolting. Based on Field observations, it has been modified to resin bolting so as to provide safer working conditions. •Empirical estimates of support requirement for the NCPH mine roof suggest a conservative range of rock bolt lengths and pattern of support spacing, and a greater support load density and anchorage depth that have successfully been provided by the current installed ground support.
Key Findings:
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The extensive literature survey clearly helps to understand that the ultimate potentiality of the method is yet to be explored. Though a number of researchers, academicians and other stake holders attempted to work on it but impact of many significant parameters are still to be analyzed. Till date no specific work on the behavior of strata as well as impact of depth of cover on Strata Behavior is done during extraction of coal with a Continuous Miner operation for mass exploitation of underground coal deposits.
Objective of the Paper:
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Study on the roof convergence with respect to face advancement. Observation of strata behavior for working at different depth of covers. Mathematical interpretation of strata configuration with respect to mine operational variables. Understanding the failure criterion and suggestive possible remedial measures.
Problem Statement:
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Coal is the only natural resource and fossil fuel available in abundance in India. It is the prime source of energy and perhaps the largest contributor to the industrial growth of the country. Mass exploitation of coal refers as “economically excavation of coal with due method of higher productivity, safety and conservation.” In above context the challenging task for mining professionals is to extract natural resource like coal from underground with utmost safety. The challenge becomes more when the mass exploitation of underground coal deposits. Continuous Miners operation keep playing a major role in the underground coal mining industry as safety and as well as productivity. It is revealed that as per our practical experience, competency of roof strata and performances of Continuous Miners are safer, productive as well as economic.