Current Theories and Concepts for the Determination of Roof Loading over the Hydraulic Supports in Longwall Faces
Haroon, P., Heshmat, M., Imbaby, S., Ibrahim, A. (2022). Current Theories and Concepts for the Determination of Roof Loading over the Hydraulic Supports in Longwall Faces. EKB Journal Management System, 24(1), 42-50. doi: 10.21608/jpme.2022.122193.1112
Peter Emad Haroon; Mahmoud Heshmat; Said Saad Imbaby; Ahmed Riad Ibrahim. "Current Theories and Concepts for the Determination of Roof Loading over the Hydraulic Supports in Longwall Faces". EKB Journal Management System, 24, 1, 2022, 42-50. doi: 10.21608/jpme.2022.122193.1112
Haroon, P., Heshmat, M., Imbaby, S., Ibrahim, A. (2022). 'Current Theories and Concepts for the Determination of Roof Loading over the Hydraulic Supports in Longwall Faces', EKB Journal Management System, 24(1), pp. 42-50. doi: 10.21608/jpme.2022.122193.1112
Haroon, P., Heshmat, M., Imbaby, S., Ibrahim, A. Current Theories and Concepts for the Determination of Roof Loading over the Hydraulic Supports in Longwall Faces. EKB Journal Management System, 2022; 24(1): 42-50. doi: 10.21608/jpme.2022.122193.1112

Current Theories and Concepts for the Determination of Roof Loading over the Hydraulic Supports in Longwall Faces

Journal of Petroleum and Mining Engineering
Article 5, Volume 24, Issue 1, June 2022, Page 42-50  XML PDF (653.57 K)
Document Type: Review Article
DOI: 10.21608/jpme.2022.122193.1112
View on SCiNiTO View on SCiNiTO
Authors
Peter Emad Haroon email orcid 1; Mahmoud Heshmatorcid 2; Said Saad Imbaby3; Ahmed Riad Ibrahim3
1Mining and Metallurgical Engineering Department, Faculty of Engineering, Assuit university, Assuit, Egypt.
2Mechanical Engineering Department, Faculty of Engineering, Assuit University, Egypt
3Mining and Metallurgical Engineering Department, Faculty of Engineering, Assuit University, Egypt
Abstract
Underground mining of ores affects in-situ rock conditions, resulting in a sequence of strata motions. Roof rock pressure, which is the basis of all ground control issues, is caused by these instabilities. The hydraulic supports are subjected to excessive stress due to the roof rock pressure. The correct forecast of Rock Roof Loading (RRL) provides longwall face stability during ore exploitation, allowing the hydraulic supports to move more freely.
This paper presents some of the current theories, approaches, and concepts for the determination of roof loading on longwall faces, with emphasis on the current gaps. This could improve the ability to manage the roof during mining workings, and govern the roof loading conditions and the supporting system. From this study, it can be seen that the periodic weighting of the main roof is an important aspect in the determination of loading requirements. Moreover, many loading calculation methods failed to take into consideration the swelling pressure of immediate roof rocks, and the tilting of the main roof blocks, which exert excessive loads on the supporting systems.
Keywords
Ground Control Problems; Longwall Mining Method; Hydraulic Supports; Rock Roof Loading (RRL); Load Calculation Theories
Statistics
Article View: 168
PDF Download: 182