contributor author | B. Zhang | |
contributor author | Y. Li | |
contributor author | X. Y. Yang | |
contributor author | S. C. Li | |
contributor author | B. Liu | |
contributor author | Z. H. Xu | |
contributor author | Y. Pei | |
date accessioned | 2022-01-30T21:43:51Z | |
date available | 2022-01-30T21:43:51Z | |
date issued | 8/1/2020 12:00:00 AM | |
identifier other | %28ASCE%29GM.1943-5622.0001757.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4268740 | |
description abstract | Cross-flaws are very common in natural rocks. To date, the understanding of the failure process of rocks with cross-flaws is very limited. In this research, we study the influence of the cross-flaws geometry on the rock strength and coalescence modes with rock-like specimens. In this work, three groups of specimens with pre-existing cross-flaws are investigated: two aligned cross-flaws, two step cross-flaws, and two collinear primary flaws. The crack propagation and strength of specimens containing two parallel flaws are also studied to compare the results with those of specimens with cross-flaws. The results demonstrate that the cross-flaw geometry influences the rock bridge coalescence patterns in rock-like specimens. Specimens with two aligned cross-flaws and two step cross-flaws coalesce with tensile cracks in the rock bridge areas, while specimens with two collinear primary flaws coalesce with shear cracks. Specimens containing two cross-flaws may have a higher uniaxial compressive strength than specimens containing two parallel flaws, and the number of specimens with a higher uniaxial compressive strength is influenced by the cross-flaws geometry in the different groups. The cross-flaws geometry influences the strength of the specimens. In this research, specimens in the group containing two aligned cross-flaws have the highest mean uniaxial compressive strength, and specimens in the group with two step cross-flaws have the lowest strength. | |
publisher | ASCE | |
title | Influence of Two Cross-Flaws Geometry on the Strength and Crack Coalescence of Rock-Like Material Specimens under Uniaxial Compression | |
type | Journal Paper | |
journal volume | 20 | |
journal issue | 8 | |
journal title | International Journal of Geomechanics | |
identifier doi | 10.1061/(ASCE)GM.1943-5622.0001757 | |
page | 11 | |
tree | International Journal of Geomechanics:;2020:;Volume ( 020 ):;issue: 008 | |
contenttype | Fulltext | |