... Abstract Axial splitting is an important failure mechanism in rock engineering. This failure mechanism is particularly observed in the vicinity of free surfaces of rock structures. Different possibilities such as existence of defects, pores and micro-cracks in the rock specimen have been...

... network of natural fractures, fluid columns built along the fracture network increase the local state of stress by stress shadowing. Hydro-shearing of the natural fractures that were under increased stress state can be explained as the main mechanism responsible for occurrence of larger magnitude...

... mass and the mechanical properties of rocks along the well trajectory are used for this purpose. The article presents numerical simulations of changes of the rock mass state around a directional well. The calculations were conducted with various material models of rock: the linear-elastic model...

... of the pillar failure can be vital. Therefore, it is essential to fully understand the mechanics behind these failures in order to predict and control them. As suggested by Tincelin and Sinou [1], pillar failures can be classified into two categories: Slow, progressive deterioration of the pillars that causes...

... to property of the enterprises. Thus, solution of GDP problem which is faced with during the underground mining of potash layers is one of the most urgent tasks of mining engineering. 2. Study of the gas-dynamic phenomenon mechanism Improving mine safety demands the research of the mechanism of different...

... and dramatic strength weakening of the rupture head. Although essential for understanding earthquakes, rock mechanics, tribology, and fractures, the relation between the intensive microcracking and strong interface weakening remains enigmatic despite continuous studies over decades. The fact that rupture...

... Abstract According to the results of compression experiments on different types of sylvinite and rock salt samples, it has been established that the second-class scale effect is basic for quasi-plastic saliferous rocks; the effect mechanism is based on a destructive high-plastic surface layer...

... researchers and geomechanical experts have explored the rockburst mechanism, its regularities and natural relations. Nevertheless, there are many things about rock mass properties and rock mass behavior that we do not know yet. Together with gaining valuable knowledge, the development of rockburst protection...

... ABSTRACT: Impregnated diamond (ID) drilling is a successful and widely used technique for drilling abrasive and hard rock formations. This is in part due to their self-sharpening mechanism, which consists of a constant renewal of diamonds acting in the cutting face as matrix wear takes place...

... their failure mechanisms and patterns. The simulation results indicate that with increasing pillar size, the failure mode changes from tensile splitting to shear failure of the pillar with failure initiating from the pillar boundaries. Failure first occurs on the pillar surface and gradually develops toward...

... such as the state of the stress, the structures inside the rock mass, and the strength parameters. These three factors among others control the design of rock slopes and the failure mechanism. Rocks may fail in tension or shear, depending on the mechanism of loading and the stress path in the field...

... development and the development of oil and gas production. To better understand the mechanism of hydraulic fracturing, many studies have been actively conducted. Hubbert & Willis (1957) have shown that hydraulically induced cracks are created by tensile fracture and extended along the direction...

... of strainsoftening material model within UDEC in order to represent the failure and caving induced by the mining process. Results of numerical simulation have improved the understanding on LTCC mechanisms in terms of stress redistribution, rupture mode and failure mechanism in coal and roof strata. These results...

... ABSTRACT: As open pit slopes continue to increase in depth, new approaches to characterising rock slope masses and slope failure mechanisms are required; these approaches should integrate and optimize new developments in remote sensing and geomechanical modelling. The author presents the state...

... failure that registered as a 3.9 local magnitude event. The mine-scale study explores the effects of material properties on the magnitude and extent of failure while offering plausible mechanisms for the initiation of massive unstable failures and their resulting energy magnitudes. 1 INTRODUCTION...

... ABSTRACT: The small deflection theory of elastic thin plate were used to analysis the roadway floor stress condition and the main influence factors of floor rock burst were cleared. Both of the theory analysis and numerical simulation were used to study on the rock burst prevention mechanism...

... ABSTRACT: This study includes investigation of the mechanism and reasons of a landslide which blocked a road to transportation and took place 500 mNE of Ergenekon village of Serdarli District located on the southern slopes of Beşparmak Mountain Range in Turkish Republic of Northern Cyprus...

... minimize its catastrophic results through proper safety and precautionary measures. 1 INTRODUCTION The investigation of the formation mechanisms of sliding surfaces in different types of landslides is an open problem of scientific research. Especially for the catastrophic landslides that have a major...

... ABSTRACT: This research project investigates the planar failure mechanisms of rock slopes by using PFC2D numerical code based on the distinct element methods. The aim of this work is to evaluate further the role of persistence of discontinuities (joints) that controls the planar failure...

... the FPZ developed under monotonic loading even with the use of lower forces. 1 INTRODUCTION 1.1 Hard rock cutting Billions of tons of rock and ore are excavated by mechanical excavators throughout the world per annum for the mining and tunneling industries. Mechanical excavation machines have been...