... the rock mass damage including the inherent damage and mining-induced based on rock mass characteristics. A methodology based on the rock engineering system is implemented to define the Rock Mass Damage index (RMDi) and to quantify its influencing parameters. Historical data of drift excavations...

... Abstract The shear response of rock discontinuities has a direct relevance to the mechanism of earthquakes and their source characteristics, and their effect on rock engineering structures. Although dynamic shearing properties of rock discontinuities are of great importance in many rock...

... deformation shale gas engineering characteristic fracden institute technology rock mechanic geophysical research figure 2 international journal Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4...

... with the testing data. 1 Introduction The constant-resistance-large-deformation (CRLD) bolt developed by academician Manchao He has been widely used in engineering due to its extraordinary mechanical properties [1–3]. The constant-resistance-large-deformation (CRLD) bolt is also called "NPR bolt" due to its...

... can provide an important theoretical reference for the stability analysis of engineering rock mass during blasting excavation. 1 Introduction Recently, there has been considerable interest in the development of underground rock mass engineering, such as tunnel, mine engineering, etc ( Song et al...

.... specimen amplitude subset amplitude attenuation reservoir characterization ultrasonic amplitude walton colorado school upstream oil & gas correlation heterogeneity journal resolution spatial heterogeneity engineering hedayat procedure rock mechanic microcrack pyrak-nolte...

... down, soften into the soil and even turn into mud. Its strength is significantly reduced and it's poorly on engineering properties (McClay et al. 1986; Wang et al. 2018). In the construction process, the red sandstone (referred to as red sandstone soil) softened into soil is often used for railway...

... Abstract The International Society for Rock Mechanics and Rock Engineering (ISRM) recommends to use the ISRM Suggested Methods (SM) to avoid problems during tests. In any case, fulfilling SM requirements does not ensure a proper result each time they are applied due to the natural variability...

... deformation and massive collapse disasters of surrounding rock are common forms of disasters in deep rock engineering, therefore, it is necessary to make out the disaster mechanisms in deep rock mass subjected to high stress after excavation. The whole process curves in laboratory rock triaxial test show...

... geomechanics envelope upstream oil & gas shear strength shear strength envelope compressive strength rock mechanic reservoir characterization strength envelope curvature prediction engineering criterion mpa compression strength barton Rock Mechanics for Natural Resources...

... extraction, coal and gas outbursts, and mining-induced earthquakes, frequently occur and require the accurate prediction of all impending dynamic hazards. A large number of engineering tests and experiments have indicated that coal-rock mass failure involves a sequence of micro- and macro-scale events...

... and then decreases with an increasing intermediate principal stress. But the bearing capacity of rock samples under the unloading condition is higher than the loading test. With increasing σ 3 or decreasing σ 2 , the rock failure gradually changes from brittle failure to ductile failure. The failure in engineering...

... numerical prediction tools in terms of ease of use and computational time and also highlights their validity as tools for underground geomechanical stability predictions. 1 Introduction A critical part of numerical modelling and design in rock engineering is that all the necessary variables...

... crown pillar wedge classification tunnel layout stability metals & mining intersection reaction curve pillar engineering rock mechanic Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4...

... is almost an impossible task considering huge variability in rock physics. Advent of numerical procedures has helped to solve approximately any kind of complicated physical problems. porous media formulation engineering geomechanics flow in porous media fractured porous media displacement...

... to construction engineering. The dynamic behavior of rocks often involves the development of complex fractures and fragmentation patterns (Ravi-Chandar & Knauss 1984). Numerical methods can overcome the experimental difficulties of investigating the dynamic behaviors of rocks. Because the capabilities...

... hydraulic fracturing coal seam international journal coal pillar technology characteristic conglomerate engineering disturbance Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Study on warping...

..., structure planes without filling or with some filled and high in strength are widely distributed, and the high geo-stress, high temperature, high osmotic pressure, and other complex geological environment of the deep rock mass, such as the rock burst, spalling and collapse of the deep rock engineering...

... shale gas operation mode iii bedding fracture fracture hydraulic fracture engineering propagation splitting china journal Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Experiment of true...

... Abstract Dynamic fracture failure of rocks subjected to static hydrostatic pressure is commonly encountered in deep underground rock engineering. The static fracture behavior of rocks under hydrostatic stress has been well studied in the literature. However, it is desirable to investigate...