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Proceedings Papers

Paper presented at the 4th ISRM Young Scholars Symposium on Rock Mechanics, May 10–13, 2017
Paper Number: ISRM-YSS-2017-046
...) and expressed in term of Factor of Safety (FoS). The FoS calculated by this deterministic approach obviously has limitation for assuring the stability of structure. The rock mass uncertainties can be dealt with by taking into account statistical distributions of the parameters in the FoS calculation...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-043
... gravity stress. In other words, the stress in horizontal direction was higher than that in vertical direction. Reservoir Characterization strength calculation excavation Wellbore Design Chinese Journal MPa rock mass Upstream Oil & Gas roadway excavation parameter value ii zone...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-006
... for TDOA to linear equations, and then to obtain the analytical solution directly from the linear equations. Due to free of calculations of square roots in solution equations, it not only solved the problems of the existence and multiplicity induced by the calculations of square roots in existed close-form...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-099
... the permissible security range. Secondly, by means of numerical calculation, simulating the real conditions of sequence of sectional construction, studying the distribu- tion and the change relationship of the starter dam deformation along with the construction steps, it was concluded that the numerical...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-044
..., a parameter D 0 is employed to describe the compaction of rock before elastic period which can be calculated by maximum entropy theory. In the second stage, elastic theory is used to express no damage in the rock. In the last stage, a parameter D is performed to define and calculate the damage of rock...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-114
... boundary, so that it is more consistent with the actual hole blasting; The way uses FLAC3D to establish the open pit slope numerical model, and then analyzed using finite difference method under blasting dynamic loading the dynamic response characteristics of slope, then calculated using strength reduction...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-139
... the calculation of factor of safety of dam slope stability and to compare the differences before and after the reinforcement using strength reduction finite element method. Research shows that under normal storage conditions, the safety factor of downstream dam slope increases significantly after building cut-off...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-070
... it reaches resid- ual strength, D is damage variable, D = 0 corre- sponds to state without damage, D = 1 corresponds to state with completely damage, and 0 < D < 1 corresponds to different damage state. eP can be calculated by following equation. (2) where, e11, eP2 and eP3 correspond to 3 different...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-135
... calculate the order of pillars failure fast and easily, but the influence of pillar height, the pillar adhesion, different thickness of overlying strata on the strength of ore pillar have not been con- sidered. In this paper, the stability of pillar is analyzed by using fuzzy set theory and improved...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-091
... calculation safety factor slope stability Standard Deviation average value slope unit failure probability slope instability probability slope unit reliability index safety coefficient coefficient failure probability probability TransitDevelopmentin 0c Mechanics Cai,Yang&Wang(Eds)@2015aylor Fran...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-087
... method of slope stability analysis, this article studied the infinite slicing calculate theory under the circumstance that the loess slope sliding-plane does not cross the slope foot. Through the formula derivation, the analytic formula of the sliding torque M, and resisting moment M1 were calculated...
Proceedings Papers

Paper presented at the 3rd ISRM Young Scholars Symposium on Rock Mechanics, November 8–10, 2014
Paper Number: ISRM-YSS-2014-117
... 2009). 675 2 THE FINITE ELEMENT MODEL AND PARAMETERS Using the SOLID unit of the ANSYS/LS-DYNA, the charge diameter is 20 em, the charge length is 80 em, and the internal length is three times of the charge diameter. The overall height of the model is 1200 em, and the width is 600 em. The calculation...

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