... Abstract Re-fracturing is a necessary and efficient way to improve the stimulated reservoir volume, enlarge the drainage area and enhance production again. The initiation and propagation mechanism of re-fracture, whereas, still maintain unclear due to complex in-situ stresses distribution...

... within a tunnel or mine development heading. The rockburst mechanism considered here is tunnel generated dynamic rupture or strain bursting, distinct from remote or mine-generated events impacting the tunnel excavation. Consideration of rock petrology, fabric, and mechanical parameters allow an initial...

... Abstract While mechanized mining operations are integral part of mining activities in soft rocks, drill and blast fragmentation method still dominates the hard rock mining operations. Mechanized fragmentation technology for hard rock mining should be robust, relatively small, and flexible...

...Mechanism of Landslide Behavior at an Unstable Steep Slope Based on Field Measurements and a Numerical Analysis: A Case Study Nguyen Trung Kiena, b*, Shinichiro Nakashimaa and Norikazu Shimizua a Yamaguchi University, Yamaguchi, 755-8611, Japan b Thuyloi University, Hanoi, Vietnam *Email: kiennt...

... Abstract The three most predominant methods for hard rock excavation and fragmentation are the use of explosives, mechanical impact/cutting and hydraulic fracturing. However, those methods have inherent drawbacks, such as non-applicability or poor performance in extremely hard and abrasive...

... analysis was able to calculate the compressive strengths that agree with that of experiments. These results provide increased understanding of the fundamental property of rock material under uniaxial compression. reservoir geomechanics asian rock mechanics symposium arms8 experimental strength...

... required for fracturing would reflect a transition of the fracturing mechanism from the thermo-activation to the macro-viscosity. Upstream Oil & Gas mechanism specimen basic study hydraulic fracturing asian rock mechanics symposium arms8 load-displacement curve high strain rate Reservoir...

... Abstract Earthquakes are normally related to pre-existing discontinuities (e.g. faults, boundaries between tectonic plates), which implies an essential role of pre-existing faults in earthquake activity. Modern understanding of the nature of earthquakes is that the primary mechanism comprises...

... ABSTRACT In order to clarify the mechanism of deep hole high hydraulic fracturing, nonlinear dynamic theory, damage mechanics, elastic-plastic mechanics are used to analysis, the law of crack propagation and stress transfer under two deep hole hydraulic fracturing in tectonic stress areas...

... compaction is extended to accommodate the specific nature of the compaction of the designated proppant. Mechanisms include mineral dissolution, transport, and re-precipitation of the resulting products in the particle interstices, resulting in a loss of porosity in proppant packs. The model used recovered...

... ABSTRACT Based on a series of laboratory tests and in situ monitoring and tests at deep tunnels excavated by TBM or D&B method, mechanism of evolution process of different types of rockburst, including strain burst, strain-structure slip rockburst, immediate rockburst and time delayed...

... that production-induced compaction process in reservoir rocks is generally time-dependent with various reasons. The mechanism of the time-dependent compaction includes a slow dissipation and equilibrium of pore pressure and creep compaction within reservoir rocks. Regardless of mechanisms involved, the time...

... metals & mining model 2 katsabanis target point air deck rock fragmentation experiment pressure ring Reservoir Characterization model 1 mechanism explosive energy utilization damage zone air deck crater blast formation mechanics Upstream Oil & Gas blast hole initiation...

.... The hydraulic fracturing is expected as an effective technique to stimulate and produce the methane hydrate (Mori et al., 1990). A considerable amount of theoretical and experimental research has been carried out in the past few decades to better understand the mechanics of hydraulic fracturing. However...

... ABSTRACT Evidence of a complex failure mechanism which involved both a distinct planar sliding surface, in addition to block-flexural toppling has contributed to the instability at a UK slate quarry. The failure was investigated using the Discrete Element Method (DEM) and the Finite Element...

... in this laboratory test. Reservoir Characterization Rock mechanics Slope Model gypsum column rock engineering laboratory test incident wave theoretical model Aydan Wellbore Design mechanism rock slope loading small scale laboratory test modeling tensile strength Kawamoto flexural tottori...

... ABSTRACT Cement grouting has been used as an effective method to reduce the permeability of the fractures in rocks. This study discusses the mechanism how cement grout controlled water permeation through the fractures in rocks, and focuses on the effectiveness of the clogging of cement...

...Giovanni Barla KN 58 ISRM International Symposium 2010 and 6th Asian Rock Mechanics Symposium - Advances in Rock Engineering, 23-27 October, 2010 New Delhi, India Progress in the understanding of deeP-seated LandsLides from massive rock sLoPe faiLure giovanni BarLa Politecnico di Torino...

...ISRM International Symposium 2010 and 6th Asian Rock Mechanics Symposium - Advances in Rock Engineering, 23-27 October, 2010, New Delhi, India RESEARCH ON THE MINING-INDUCED SUBSIDENCE CHANICS AND TREATMENT SCHEME OF THE MAHE RIVERBED WU SHUNCHUAN, PAN DANGUANG AND GAO YONGTAO School of Civil...

... reservoir geomechanics old cavern mechanism Upstream Oil & Gas stability analysis Haakonsvern rock bolt Reservoir Characterization marine transportation extention consideration support measure failure mechanism rock wall potential failure mechanism construction work safe...