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Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0142
... lacking of enough explanation. ML ROP prediction need more accurate ROP models. In this paper a new and reliable calculation method of ROP prediction for well drilling is proposed by Extreme Gradient Boosting (XGBoost) algorithm. It is compared with Random Forest Regression algorithm on ROP prediction...
Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-436
... proposed as an explanation for the observed non-linear compaction behaviour of the Groningen field [6, 7]. The same rate and state friction phenomena have been linked to rate-dependent earthquake generation [8, 9]. Hence a number of laboratory experiments, previously carried out to study the effects...
Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-518
.... This presentation describes a novel explanation for the anomalous time dependent subsidence phenomenon. It is based on the realisation that the generally applied nucleus of strain concept which assumes correspondence between poroelasticity and thermoelasticity is not strictly true and that a bulk stiffness...
Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-112
... of macroscopic tensile stress has given rise to much speculative discussion. Several attempts have been made to find proper theoretical explanations for rock splitting under compressive stress conditions. One view is that the fracture occurs when effective tensile stress exceeds the critical stress of material...
Paper presented at the The 23rd U.S Symposium on Rock Mechanics (USRMS), August 25–27, 1982
Paper Number: ARMA-82-1048
... inclinometer explanation Modeling & Simulation susbsidence strain transducer tilt transducer metals & mining topography centerline subsidence subsidence 0 longwall panel monument surface monument Subsidence Engineer Handbook panel 3 installation transducer Chapter 102 SUBSIDENCE...
Paper presented at the 20th U.S. Symposium on Rock Mechanics (USRMS), June 4–6, 1979
Paper Number: ARMA-79-0429
.... It is suggested that a plausible reason for these reduced displacements is the absorption of the initial rock expansions into discontinuities within the rock mass, although this explanation by itself is not the complete story. Some data has been obtained and analysis of this data is in progress. INTRODUCTION...
Paper presented at the The 3rd U.S. Symposium on Rock Mechanics (USRMS), April 20–22, 1959
Paper Number: ARMA-59-0296
... concept of brittle fracture. Since this concept has been found to explain m any observed phenomena not even touched upon by other theories it, has become accepted as the best explanation of brittle fracture. Griffith hypothesized that brittle fracture is due to high tensile stresses Generated...
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