Authors: V.R. Sastry, Roshan Nair
Addresses: Department of Mining Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore – 575025, India. ' Department of Mining Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore – 575025, India
Abstract: The paper presents field monitoring study of two adjacent longwall panels based on stress measurements in longwall block and barrier, load transferred on to the gate roads and convergence measurements in the gate roads during face retreat in the panels. Results indicated that the section of barrier lying in the goaf experienced higher abutment stress when compared with the section lying ahead of face. There was a transfer of load in gate roads ahead of face after the occurrence of roof fall in goaf. Maximum cumulative convergence of more than 8 mm was observed in the gate roads during weightings.
Keywords: longwall mining; barriers; gate roads; goaf; instrumentation; stress measurements; load transfer; convergence measurements; roof fall.
International Journal of Mining and Mineral Engineering, 2009 Vol.1 No.3, pp.232 - 247
Published online: 18 Jul 2009 *Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article