... ABSTRACT Taiwan is rich in geothermal energy, which mainly distributes in the slate area. Due to the high anisotropy and heterogeneity of slate, the properties of rock mass are quite different from isotropic rock. This study conducted a discrete element analysis to evaluate the damage area...

... strength estimation empirical method-based pillar strength estimation aspect ratio reservoir characterization pillar rock mass hb model failure process canada government equation strength estimation rectangular pillar ARMA 23 0334 Assessment of empirical methods-based pillar strength...

... geology geologist reservoir geomechanics discontinuity geological subdiscipline brazil government artificial intelligence canada government orientation characterization overhang cloud digital outcrop model rock mass uav survey iron mining united states government metals...

... loading-induced response and interaction of tunnel structures and surrounding rock masses. Our research investigates the slippage behavior of discontinuities with slip-weakening friction around a tunnel under dynamic train loadings, and further analyzes their impacts on structural deformations. A distinct...

... geology china government upstream oil & gas rock mass united states government reservoir geomechanics rock mechanic tunnel coefficient elastic model geological subdiscipline particle jointed rock mass boundary in-situ stress wave velocity excavation pressure coefficient...

...-to-height ratio pillar test operation rock mass massive hard-rock pillar deposit massive pillar sublevel in-situ pillar test infrastructure dimension pillar cut extraction management approach hard-rock pillar peak strength pillar strength ARMA 23 400 Need and design of a field test...

... ABSTRACT The rock mass modulus, or deformation modulus, of an underlying rock mass is an important input variable for any load-deformation analysis of a foundation, such as numeric modeling of a dam. The deformation modulus can be determined empirically using a variety of different...

... to those who live nearby. The main cause of a flyrock is a miscalculation on the detonation plan, especially the reduced bore spaces, higher benches with too deep holes, reduced hole plugging, and excessive explosive loading. Flyrock events may also be influenced by rock mass characteristics. If the rock...

... ground in weak rock, deep, and high-stress environments. The primary focus will be on utilizing systems that collect high-resolution point clouds and spectral data to assess deformation and corrosion based on the point cloud data. A secondary project aim is to assess the rock mass and ground conditions...

... protrusion rock mass fluctuation variation water entry uplift spillway model annandale configuration spillway block protrusion flow rate mechanism ABSTRACT Rock mass erosion has been a serious safety concern in recent years, especially in the case of dam spillways. Rock block removal...

... ABSTRACT An emerging topic in the geotechnical site characterization is the use of drones for rock mass characterization through Structure from Motion (SfM) photogrammetry. This study highlights a series of surveys utilizing a DJI Mavic II drone performed between July and August 2022...

... contacting with the hot rock mass, which plays a crucial role in the initiation and propagation of the hydraulic fracture(Li and Tang., 2022; Li et al., 2022). It has been investigated that the mechanical properties of the granite derogated substantially after the specimens are subject to cyclic heating...

... system study area rkiye strain measurement production control cable optical fiber cable application rock mass relative strain ARMA 23 698 Monitoring of an Unstable Slope in Kocaeli (Türkiye) by an Optical Fiber Based System Arslan Kelam, A. Department of Geological Engineering, Middle East...

... of the water reduction factor is analyzed, and an overall improvement in the definition of the stability boundaries is observed. INTRODUCTION The potential for instability in the rock mass surrounding underground mine cavities is an ever-present hazard for the safety of people, equipment, and operations...

... wellbore pressure procedure rock mass strength stress state abousleiman friction angle drilling problem stress path contraction pore water pressure deviatoric plane ARMA 23 754 A graphical analysis-based elastoplastic solution for undrained wellbore drilling problem in Hoek-Brown rock...

... environment. For a K different from 1, both models are close to the empirical value, but the IMASS model presents closest values. Moreover, when considering a fractured rock mass, IMASS does not assess properly the depth of failure, but present a better assessment that the Mohr-Coulomb model for higher GSI...

... mining. This paper reports back the implementation of slope analysis and design through field observations to demonstrate the process of estimating rock mass rating (RMR) and finding suitable slope angles using Bieniawski (1976) RMR and Heins and Terbrugge stability charts respectively. Further analysis...

..., aquifer formations or depleted hydrocarbon reservoir fields. However, many important aspects have to be studied before its full-scale implementation, among them (1) the effect of spatial variation of rock mass properties and (2) hydrogen embrittlement on the steel lining. We present a numerical study...

... of discontinuity orientations using the 3D discontinuity trace model produced reliable results, with a maximum average difference between the orientations measured through discontinuity traces and adjacent rock surfaces of 2.1°. We believed that rock mass characterization using the proposed method reduces...

... unviable. Cave mining operations can be challenging because the high strength of rock mass and high stress conditions at large depths can result in poor fragmentation of the ore and make it prone to seismic hazards. The use of hydraulic fracturing to precondition the strong orebody by fracturing has been...