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3篇 您的检索式:作者名="Thomas Bruning"
    题名 作者 年代 出处 被引量
1Erythropoietin prevents chemotherapy-induced anemia: Case report显示文摘Wolfgang Oster Friedhelm Herrmann Alexander Cicco Heinhold Gamm Gerhard Zeile Thomas Brune Albrecht Lindemann Gregor Schulz Roland Mertelsmann 1990Blut1990,,2:1
2Influence of deviatoric stress on rockburst occurrence:An experimental study显示文摘As mining delves deeper into the crust, it is necessary to investigate the complex rock responses associated with higher stress gradients. Therefore, it is essential to better understand the mechanisms associated with the rockburst phenomenon. However, due to the large-scale and difficult monitoring of real mining excavations, laboratory scale tests must be utilised to determine the conditions conducive to burst. To this end, this research focuses on the implementation of a new rockburst testing apparatus to replicate the stress conditions of a rock mass excavation at the time of bursting. This apparatus allows the determination of rockburst stresses and a relationship between deviatoric stress and in-situ pressure/depth. Using this relationship it is then possible to estimate the standardised stress levels for a certain rock type which might lead to rockburst occurrence. Furthermore, it is demonstrated that with increasing in-situ pressure, the likelihood(measured as a lower differential stress) and the extent(indicated by the increasing range of deviatoric stress) of rockburst increases. These findings provide valuable information about the conditions necessary for bursting in deep mining.Thomas Bruning Murat Karakus Selahattin Akdag Giang D.Nguyen David Goodchild 2018International Journal of Mining Science and Technology2018,28,5:1
3Evaluation of the propensity of strain burst in brittle granite based on post-peak energy analysis显示文摘The increasing demand for resources and depletion of near ground mineral resources caused deeper mining operations under highstress rock mass conditions.As a result of this,strain burst,which is the sudden release of stored strain energy in the surrounding rock mass,has become more prevalent and created a considerable threat to workers and construction equipment.It is,therefore,imperative to understand how strain burst mechanism and stored excess strain energy are affected due to the high confinement in deep underground conditions.For this purpose,post-peak energy distributions for brittle rocks were investigated using a newly developed energy calculation method associated with acoustic emission(AE).A series of quasi-static uniaxial and triaxial compression tests controlled by the circumferential expansion were conducted.Snap-back behaviour known as Class-II behaviour associated with energy evolution and the material response under self-sustaining failure were analysed on granites under a wide range of confining pressures(0–60 MPa).The experimental results underline that the energy evolution characteristics are strongly linked to confinement.Stored elastic strain energy(dUE),energy consumed by dominating cohesion weakening(dUCW)and energy dissipated during mobilisation of frictional failure(dUFM)showed a rising trend as the confining pressure was increased.An intrinsic ejection velocity was proposed to express the propensity of strain burst that was purely determined by the excess strain energy released from Class II rock.Selahattin Akdag Murat Karakus Giang D.Nguyen Abbas Taheri Thomas Bruning 2021Underground Space2021,6,1:0
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