Strata Behaviour During Different Stages of Mechanized Depillaring Operations: An Indian Case Study

DOI

10.2991/978-94-6463-252-1_127How to use a DOI?

Keywords

Strata Behaviour; Mechanized Depillaring; Split and Fender method

Abstract

Strata control is one of the major challenges in underground coal mining and needs special attention during depillaring operations. Depillaring in underground mining is generally a complex operation, which became a major contributor to accidents as per past experiences. The study of strata behaviour during depillaring is very much important so that proper precautionary measures can be taken to avoid accidents during depillaring. Appropriate planning and installation of quality sensors for continuous monitoring and analysis of strata behaviour improve the safety of the mine as well as productivity. This paper describes behaviour of the strata during different stages of mechanized depillaring operation. A case of an Indian coal mine using continuous miner with split and fender method of pillar extraction has been chosen for study. It was observed that the load-bearing capacity of pillars is high before the splitting and slicing operation and it is gradually decreased by row-to-row extraction. The stress acting on pillars gradually shifts to the adjacent pillars after starting the splitting operation. Various strata monitoring instruments were installed and data were collected & analyzed. Towards the end, the authors highlight the practical behaviour of the strata in different stages of depillaring operations and suggest precautionary measures to improve the overall safety of the mine.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Manthri Rakesh
AU  - A. K. Dash
PY  - 2023
DA  - 2023/11/09
TI  - Strata Behaviour During Different Stages of Mechanized Depillaring Operations: An Indian Case Study
BT  - Proceedings of the Second International Conference on Emerging Trends in Engineering (ICETE 2023)
PB  - Atlantis Press
SP  - 1265
EP  - 1276
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-252-1_127
DO  - 10.2991/978-94-6463-252-1_127
ID  - Rakesh2023
ER  -