Rock nail reinforcement of a free surface

Papamichos, E; Vardoulakis, I

dc.contributor.author	Papamichos, E	en
dc.contributor.author	Vardoulakis, I	en
dc.date.accessioned	2014-03-01T02:12:08Z
dc.date.available	2014-03-01T02:12:08Z
dc.date.issued	2012	en
dc.identifier.issn	03639061	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30014
dc.subject	Contact force	en
dc.subject	Free surface failure	en
dc.subject	Pullout test	en
dc.subject	Rock nailing	en
dc.subject	Rock reinforcement	en
dc.subject	Surface instability test	en
dc.subject.other	Contact forces	en
dc.subject.other	Free surfaces	en
dc.subject.other	Pull-out test	en
dc.subject.other	Rock reinforcement	en
dc.subject.other	Surface instability test	en
dc.subject.other	Reinforcement	en
dc.subject.other	Surfaces	en
dc.subject.other	Testing	en
dc.subject.other	Rocks	en
dc.subject.other	contact zone	en
dc.subject.other	dilation	en
dc.subject.other	pullout test	en
dc.subject.other	reinforcement	en
dc.subject.other	rock mechanics	en
dc.title	Rock nail reinforcement of a free surface	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/nag.1003	en
heal.identifier.secondary	http://dx.doi.org/10.1002/nag.1003	en
heal.publicationDate	2012	en
heal.abstract	Rock nailing of the surface instability test specimen is considered as a means to reinforce the rock and increase its free surface strength (FSS). This technique is modeled using Cox's original shear-lag method. In the continuum sense, nail reinforcement is modeled as a body force that acts as a confinement. Results are presented for a single nail in a surface instability test specimen and for a nail-reinforced test specimen with a given nail density. The results show that nail length and the nail-rock contact modulus are important parameters. The effect of nail reinforcement increases with the second power of nail length. Rock dilation is also important since the action of the nails is mobilized from the difference in displacement between the rock and the nail. The results show the potential for a significant increase in the FSS of the rock. © 2011 John Wiley & Sons, Ltd.	en
heal.journalName	International Journal for Numerical and Analytical Methods in Geomechanics	en
dc.identifier.doi	10.1002/nag.1003	en
dc.identifier.volume	36	en
dc.identifier.issue	2	en
dc.identifier.spage	203	en
dc.identifier.epage	218	en