Syllabus

Module1:
Natural support Design of rhombus and inclined coal pillar. Geological and geometric factors involved in design of natural supports. Design of fender/rib/snook. Roof-coal pillar interaction. Application of numerical modelling for design of the natural supports. [12 Hours]

Module 2:
Applied support: Support systems for continuous miner based mechanised workings and longwall working. Active and passive support, Failure mechanism of roof/cable/flexi bolts. Short Encapsulation Pull-out Test (SEPT) for resin grouted rock bolts. Application of numerical modelling for design of the applied supports. [12 Hours]

Module 3:
Roadways: Cut-out distances during continuous miner-based working, Factors affecting the design of roadways- Depth of cover, in-situ stress conditions, nature of over- and under-lying strata, gradient of coal seam, orientation of geological discontinuities, etc., Applicability of continuous miner and bolter miner. [6 Hours]

Module 4:
Goaf behaviour: Caving characteristics of overlying strata, Caveability Index, Roof falls, Line of extraction, Induced stress driven fracturing/spalling in natural supports. Bulking factor of overlying strata and its significance, Caving angle, Angle of draw, Induced stress management, Estimation of active mining zone during depillaring operations. [6 Hours]

To understand the newly designed approaches for different structures of underground mines for safe and efficient extraction of coal.

To understand design of recent advancement in applied support system for underground coal mining.

To understand strata mechanics involved during continuous miner based mechanised working

CO1: It will provide knowledge to students for suitable design of different underground structures during semi-mechanised and mechanised workings in underground coal mine.
CO2: Students will be familiar with the recent developed technologies including applied support for underground coal mining
CO3: Apply different support systems for stability of working places in underground coal mine.
CO4: Strata management skill during depillaring with caving under different nature of roof strata

J.M. Galvin, Ground Engineering - Principles and Practices for Underground Coal Mining, Springer International Publishing AG Switzerland, 2016

2. S.S. Peng, Longwall Mining, 3rd Edition, published by CRC Press, 2021

1.John A. Hudson and John P. Harrison, Engineering Rock Mechanics- An introduction to the principles, Elsevier, 2007

2. R.D. Singh, Principles & Practices of Modern Coal Mining, New age international New Delhi, 1997

Rock Mechanics and Rock Engineering (RMRE)

International Journal of Rock Mechanics and Mining Sciences (IJRMMS)