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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-004
... The loading on the tools of a TBM can usually only be estimated through the global thrust force, which gives a typical force of about 250 kN for 17″ discs. The actual loading is however highly variable, with peak loads that can be many, times the nominal load. In the present paper...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-095
... Abstract Two dimensional plain strain distinct element method has been used to analyze a curved slope under static and dynamic loading condition. Most vulnerable cross profile of the slope has been selected through kinematic analysis and slope mass rating specially devised for curved rock...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-043
... or triaxial loading cannot be obtained as superposition of uniaxial load responses. Striking paper book example of material demonstrating such behavior is rubber subjected to uniaxial or isotropic compression. Despite this fact, linear mechanical moduli, being secant or differential, determined through...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-088
... Abstract The article deals with the use of computed X-ray radiography to visualize the development of the fracture process zone in the rock samples. For radiographic observations during the three-point bending loading, glauconitic sandstone from the Řeka quarry (sometimes also referred...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-099
... Abstract This paper presents the results of numerical analysis carried out using PLAXIS 3D on behaviour of rock-socketed pile subjected to independent and combined loading. The numerical procedure adopted in the analysis was validated by comparing the load test results reported...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-074
... in coal mining in the world [1–5]. As there is no relevant experience of using this method in the Upper Silesian Coal Basin, an extensive monitoring system has been implemented to enable the mining trial to continue safely. The monitoring is focused on the load-bearing capacity of the coal pillars...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-076
...): metals & mining reinforcement unit rockbolt jointed rock mass Reservoir Characterization Upstream Oil & Gas pullout loading reinforcement angle Completion Installation and Operations Rock mechanics international journal loading rock block rock mass interface reservoir geomechanics...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-012
... ABSTRACT: To investigate the failure of non-continuous jointed rocks under compression loading, many researchers have performed uniaxial and biaxial compression tests. In this paper, I simulated numerically the behavior of artificial jointed rock under axial loading and compared...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-002
...: Microcrack development (inter- and intra-granular fracturing) Lifetime prediction of rocks under static long-term loading Techniques to duplicate microstructure of rocks (stochastic approaches and digital image processing) Influence of microstructure on poroelasticity Micromechanical back...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-023
... ABSTRACT: Determination of crack initiation CI and crack damage CD as well as the understanding of failure mechanisms like spalling of rocks is still an issue to solve. Several methods are available for estimating CI and CD under uniaxial loading. Spalling typically occurs in close distance...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-068
... on coal burst occurrence using numerically efficient nonlinear Finite Element Models. A variety of loading conditions, boundary conditions, and interface properties were evaluated to determine their effects on failure of single and group of pillars. The ultimate aim here is to undertake a significant...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-125
... significant damage to the hydroelectric structures and the underlain rock mass thus leading to enormous loss for the nation. Hence, the rock mass supporting the structures should be characterized so that it can resist any unanticipated load in addition to the usual structural load and load from...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-126
... discontinuities, interfaces and soft rocks. The device is capable of applying four different loading schemes, namely, shear testing with constant loading rate, creep loading, cyclic loading and arbitrary form dynamic loading based on the recent large earthquakes with strong motion records. This paper describes...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-127
... conditions, a series of dynamic impact load tests was undertaken involving a drop weight of 185 kg falling from a height of 2.8 m equivalent to an energy level of 5076 Joules. The test sample comprised a double shear test system, with three blocks joined together with a rockbolt at various configurations...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-082
... laboratory tests. laboratory test oedometer test investigation loading constitutive model Reservoir Characterization Upstream Oil & Gas input parameter normal stress strength parameter specimen annular gap direct shear test Pea Gravel determination lining segment numerical...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-130
.... These tests include a plate loading test (PLT) and rock shear test (RST). In the past, several cyclic loading PLTs and RSTs for in-situ rock masses were attempted to evaluate the cyclic deformation and strength characteristics (JSCE 1989, Fujiwaraet al. 1984). In recent years, these tests have not been put...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-146
... etc. and rock parameters such as rock strength and brittleness etc. However, this research just focuses on the behaviour of the rock-tool interaction zone under various cyclic loading types. Research results showed the developed Fracture Process Zone (FPZ) under cyclic loading is much bigger than...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-161
... Shaft identified abnormalities with reference to the hangingwall conditions of the stope area as well as pillar and support behaviour. This resulted in premature loading of the grout pack support and fracturing of the pillar edges. The support design was adjusted to cater for the behaviour identified...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-143
... ABSTRACT: The paper deals with the total load-bearing capacity of steel arch yielding supports of roadways which is inevitable for design of the roadway support. The authors compared results of a finite element (FE) model they developed with results of experimental tests of steel arch supports...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-020
... ABSTRACT: Series of uniaxial compression tests combining constant strain rate and four patterns of cyclic loading were carried out on Kimachi sandstone to clarify the timing of rock failure. It was found that rock failure timing was random in triangular, reverse triangular and small amplitude...

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