... independently by Carneiro and Akazawa, in 1943. Tensile strength, tensile elastic modulus, plastic modulus are measured by stress-strain curve recorded in testing specimen by Brazilian test. This article serves as show measured tensile elastic modulus and tensile plastic modulus of specimen in basalt zone...

... and covers about 70 % of the earth's crust. The shale also covers a significant portion of the Chittagong region, Bangladesh. The field strength (hammer value) for the shale of the Bhuban Formation showed a more considerable variation than that for other rocks in the region, revealing a high potential...

..., waveform, and confining pressure. The present study discusses results from a series of laboratory cyclic polyaxial strength tests performed on a M20 grade concrete model rock. The tests were performed under monotonic as well as cyclic conditions under load-controlled environment. For cyclic tests...

... loads. The two new case studies not only verified the significance of above factors but also reemphasized the significance of in-situ coal strength in increasing propensity for violent failure. Keywords; Rock Burst, Multiple Variable Regression, Geotechnical Monitoring, Rigidity/Cavability 1...

... Reservoir Characterization Modeling & Simulation testing sample compressive strength production monitoring Upstream Oil & Gas friction effect radial inertia effect rock sample Reservoir Surveillance strength SHPB test split Hopkinson pressure bar production control...

... excavation machines that commonly used in mine and tunnel projects for excavation of shafts. This study aimed to analyze the effect of intact rock properties (uniaxial compressive strength and indirect tensile strength) and RQD (rock quality designation), as well as fault zones on the performance of a RBM...

... and confined conditions. Complete stress-strain curves were obtained for each test, which allowed calculating the main elastic and peak and residual strength parameters. Experimental results of the dilation angle (which showed its dependence on confining stress and plastic parameter) were fit to available...

... in the public domain. For example, interpretative reports have described the rocks qualitatively as water-bearing with highly conductive features. In practice claims have arisen regarding expectations of strength and conductivity and these are difficult to resolve in the absence of an adequate data base...

... Characterization parallel bond grain boundary micro-crack strength grain size crack-to-contact ratio grain-based model Rock Mech numerical model Abstract Since its development, the grain-based model (GBM) has been demonstrated to be capable to capture the strength and deformation behavior...

... Abstract Tunneling depth is gradually increasing around the world due to the improvement of construction technology and the requirement of deep underground space. At depths where the high in-situ stresses might result hard rock failure with violent post-peak strength degradation...

... of the coal such as Young's modulus, fracture energy, cohesive strength, friction angle, uniaxial compression and shear strength. Further, these properties were carefully calibrated prior to being taken as input arguments in the continuous-discontinuous modelling. All the simulating results were basically...

... in production. Therefore, to protect reservoirs, underbalanced drilling has become a common drilling technique in reservoir stratum of low permeability oil and gas fields. Because of the low support force of drilling fluid column pressure in the process of underbalanced drilling, if the formation strength...

...-mechanical rock properties of laboratory observations. The high temperature decreases the compressive strength, makes the behavior of rock salt become more ductile instead of being brittle. The presence of interlayer induces more complex micro-cracking path, due to the heterogeneous heat transfer. Results...

... of construction period and an escalation of budget. Therefore, it is essential to understand the rock mass conditions around a shaft before or during excavation. In this study, an estimation method of rock strength from the excavation data of a tunnel boring machine (TBM) was applied to the shaft excavation...

... Abstract The tensile strength of rock is an important property of rock engineering. However, the measurement of tensile strength of rock is often overlooked due to difficulties of specimen preparation and accuracy of testing result. This study adopted the pull-off test to measure the foliation...

... grouts, permeability and strength of the samples have been measured by falling the head hydraulic conductivity test and UCS test. As the conclusion, the study shows that chemical grouting is applicable to improve Indonesian sand. 1. Introduction Infrastructure development in Indonesia has been...

... to the fibres network. Furthermore, the different ways to check the energy absorption and residual strength are often less well known, and lead to confusion. The European standard EN 14487–1 mentions the different ways of specifying the ductility of fibre reinforced sprayed concrete in terms of residual...

..., and the peak shear strength of the specimen is determined by the weaker joint. In contrast, under higher normal stress, the peak shear strength is attained when the tensile fractures initiate in the interlayer rock, and it has also relevancy to the JRC of double joints and interlayer thickness. Additionally...

... to deform to resist high ground pressure has been in progress. overburden isrm international symposium asian rock mechanics symposium 29 Mortar metals & mining deformation-controlled rock bolt load-displacement curve tunnel strength rock bolt weak ground ground pressure Reservoir...

... Abstract The bedding interface has a significant influence on the mechanical properties of layered rock. However, the mechanism of this influence on rock strength and failure characteristics under true triaxial stress, is not yet understood. In this study, the numerical simulation is applied to investigate...