... morgantown dfn proceedings fault shear strength larson bump discrete fracture network kim excavation ARMA 22 0019 Approaches to Determine Fault Shear Strength in Large-scale Direct Shear Test Simulations using Discrete Fracture Networks Kim, B.H. and Larson, M.K. CDC/NIOSH, Spokane, Washington...

... extensometer sandstone procedure panel face study site intersection proceedings international conference pillar response pillar abutment pillar gateroad longwall face Morgantown longwall panel 1. INTRODUCTION The longwall mining method continues to lead underground coal mining production...

... International Conference on Ground Control in Mining. Morgantown, WV. 4. Barczak, T., G. Esterhuizen, and D. Dolinar. 2005. Evaluation of the impact of standing support on ground behavior in longwall tailgates. In Proceedings of the 24th International Conference on Ground Control in Mining. Morgantown, WV. 5...

... envelope Strength Reduction Method principal stress Morgantown roof collapse modeling 1. INTRODUCTION The strength reduction modeling technique has a long history in numerical model analysis in rock slope stability engineering (Lorig and Varona, 2000). This modeling technique was adapted...

... Morgantown axial displacement gauge configuration deformation 1. INTRODUCTION Whereas early researchers such as Freeman[1] and Farmer[2] combined theoretical and experimental research, in recent years the research emphasis has become progressively biased towards analytical and numerical investigations...

... the ARMA 11-354 Effect of Elevated Temperature and Pressure on Axial and Torsional Forces in Rock Drilling Hamrick, T.R. West Virginia University, Morgantown, WV, USA URS/Department of Energy NETL, Morgantown, WV, USA Kang, B. West Virginia University, Morgantown, WV, USA URS/ Department of Energy NETL...

... stress horizontal stress maximum horizontal stress Iannacchione proceedings roof failure maximum stress stability international conference US government roof instability Morgantown Roof Stability Limestone Formation Ground Control layout excavation tectonic stress 1. BACKGROUND...