1-20 of 73
Keywords: Thickness
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-026
... subsidence and overburden separated strata. Based on allometric growth of mining overburden separated strata, which would provide a new research and analysis method for control and prevention of mining subsidence damage, we establish the model of mining subsidence. metals & mining Thickness...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-125
... lamination can cause size effect even without considering size effect of the intact rock and rock joints. The influence of lamination orientation on size effect is distinct and is orientation-dependent while the influence of lamination thickness is minimal. Changing dip or stress direction will affect the...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-097
... toughness specimen toughness scale mode-i fracture toughness hydraulic fracturing Thickness artificial notch alkali feldspar semicircular specimen macro scale fracture toughness mode-i fracture toughness granite Procedia Engineering 191 ( 2017 ) 761 767 Available online at...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-007
... et al. (2010) review extensively some field cases illustrating both the sizes and occurrences of each model. 2.4 Fault thickness According to Al-Busafi (2005), the thickness of a fault is defined as the separation between the external slip surfaces, in case of more than one being present. Data...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-078
... immediate: the lack of data coming from monitoring of real events, forces to obtain velocity and thickness using numerical codes or empirical relation. In this way a probability distribution cannot be represented and the application of partial factors has no sense. Moreover, since veloc- ity and flow...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-080
... and optimization scheme about deep hole floor-break blasting and the control effect were tested in practice. It's found that the mining horizontal stress was the key reason for floor heave and the layer thickness of floor, mechanical properties and the supporting intensity of roadway surrounding rock...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-099
... crucial to the deformed process of consequent slopes. Consideration of various conditions, including foliation dip angle, sliding mass geometry, and spacing between foliation planes, indicate that increasing the foliation dip angle and the thickness of sliding mass increases the depth of slope deformation...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-160
...- tial downfall of ceiling, walls and also floor swelling. Shotcrete thickness calculated using the Rabcewicz equation: where t = the thickness of the shotcrete, p = stress in tons per square meter, r = radius of gallery in meter, = permitted shear stress in tons per square meter. Length of rock bolts...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-156
... dimensions influence the instability of the shallow underground excavations. Due to wide range of bedding structures, in this research authors tried to analyses such structure using small scale experimental and numerical models. In the tested models beddings dip varies from 0, to 90 degrees. Layer thickness...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-186
... surveys. Surveys included detailed measurements of local orientation of the discontinuity walls and infilling thickness. Since the mechanical behaviour of the rock mass is largely influenced by the infilling material, this was carefully sampled on site. Where sampling conditions were particularly...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-055
... of infilled joints under both constant normal load (CNL) and constant normal stiffness (CNS) boundary conditions, considering the ratio of infill thickness (t) to the height of the joint wall asperity (a), i.e., t/a ratio (Ladanyi et al. 1977 & Leichnitz 1985). The experimental researches to...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-103
.... Volumetric extensile strain was used as an indicator of the extent of excavation damage prior to and after the construction of the cut-off. Using the volumetric extensile strain to plastic yield zone area ratio the cut-off performance for thickness to depth ratios between 0.05 and 0.7 were examined. It was...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-168
... (Figure 1). A number of cases have been reported when the major dump slides and failures have caused substantial damage and interruption on the production circuit (DGMS circular, 2007). coal bed methane structural geology Thickness flow characteristic Reservoir Characterization coal seam gas...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-176
.... equation of state hydraulic fracturing Artificial Intelligence fluid modeling Engineering Isfahan curvature curve-shaped discontinuity input data geometrical modeling University Upstream Oil & Gas anjire discontinuity assumption fracture complex reservoir Thickness Dershowitz plane...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-181
... environmental impact, a reliable subsidence prediction is essential. Some recent research results on subsidence behavior are summarized below. Using FLAC 3D , Dai et al. (2011) find that the surface subsidence extends widely and the surface deformations decrease with the increase of the layer thickness. Guo et...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-162
... quiet period reservoir geomechanics electrode Thickness numerical simulation China resistivity anomaly ABSTRACT: Deep-hole resistivity anomaly was observed in Heping geoelectric station before the earthquakes occurred in Heyuan. Different from the resistivity anomaly of most resistivity...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-020
... infrastructure of the station building in this rather complex environment which exhibits diaphragm walls, old buildings etc. Upstream Oil & Gas metro station type 2 micro-cement injection construction diameter application work machine steel mesh Thickness pipe excavation support system...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-007
... convergence investigation reservoir geomechanics Thickness tunnel deformation stress release ratio tunnel lining public work research institute deformation countermeasure numerical analysis rock condition lining area 1 area 3 tunnel ?? ABSTRACT: To monitor deformation in a road tunnel in...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-094
.... Reservoir Characterization Upstream Oil & Gas Thickness seam metals & mining overburden destress rock reservoir geomechanics explored longwall konicek longwall face structural geology concentration additional stress Probe strata destress explored area rockburst stress...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-147
... material is high elasticity and it has a bad geo-mechanic properties. The difficulties in taking samples at the bedding contact due to thickness are restrictive and sometimes are not sufficient for laboratory testing. Geo-mechanic testing for bedding contact material is difficult due to core sample, it...

Product(s) added to cart

Close Modal