Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic Bodies
According to the special combined structure of surrounding rock in western mining area of China, a micromechanical model with variable parameters containing contact interface was proposed firstly. Then, the derived stresses in coal and rock near the interface were analyzed on the basis of the harmon...
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Series: | Mathematical Problems in Engineering |
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doaj-35060fcdcacb4159861756c280c1372d2020-11-24T22:24:04ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472014-01-01201410.1155/2014/750504750504Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic BodiesZeng-hui Zhao0Wei-ming Wang1Li-hua Wang2Ji-xing Yan3State Key Laboratory of Mining Disaster Prevention and Control Cofounded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, ChinaAccording to the special combined structure of surrounding rock in western mining area of China, a micromechanical model with variable parameters containing contact interface was proposed firstly. Then, the derived stresses in coal and rock near the interface were analyzed on the basis of the harmonized strain relation, and the analytical solutions with respect to stress states near the interface were drawn up. The triaxial compressive strength of coal and rock was further determined in case the contact interface was in the horizontal position. Moreover, effects of stiffness ratio, interface angle, and stress level on the strength of two bodies near the contact area were expounded in detail. Results indicate that additional stresses which have significant effect on the strength of combined model are derived due to the adhesive effect of contact interface and lithological differences between geologic bodies located on both sides. The interface effect on the strength of combined body is most associated with the stiffness, interface angle, and the stress level. These conclusions are also basically valid for three-body model and even for the multibody model and lay important theory foundation to guide the stability study of soft strata composed of different geologic bodies.http://dx.doi.org/10.1155/2014/750504 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zeng-hui Zhao Wei-ming Wang Li-hua Wang Ji-xing Yan |
spellingShingle |
Zeng-hui Zhao Wei-ming Wang Li-hua Wang Ji-xing Yan Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic Bodies Mathematical Problems in Engineering |
author_facet |
Zeng-hui Zhao Wei-ming Wang Li-hua Wang Ji-xing Yan |
author_sort |
Zeng-hui Zhao |
title |
Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic Bodies |
title_short |
Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic Bodies |
title_full |
Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic Bodies |
title_fullStr |
Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic Bodies |
title_full_unstemmed |
Analytical Solution of Interface Effect on the Strength of Combined Model Composed of Different Geologic Bodies |
title_sort |
analytical solution of interface effect on the strength of combined model composed of different geologic bodies |
publisher |
Hindawi Limited |
series |
Mathematical Problems in Engineering |
issn |
1024-123X 1563-5147 |
publishDate |
2014-01-01 |
description |
According to the special combined structure of surrounding rock in western mining area of China, a micromechanical model with variable parameters containing contact interface was proposed firstly. Then, the derived stresses in coal and rock near the interface were analyzed on the basis of the harmonized strain relation, and the analytical solutions with respect to stress states near the interface were drawn up. The triaxial compressive strength of coal and rock was further determined in case the contact interface was in the horizontal position. Moreover, effects of stiffness ratio, interface angle, and stress level on the strength of two bodies near the contact area were expounded in detail. Results indicate that additional stresses which have significant effect on the strength of combined model are derived due to the adhesive effect of contact interface and lithological differences between geologic bodies located on both sides. The interface effect on the strength of combined body is most associated with the stiffness, interface angle, and the stress level. These conclusions are also basically valid for three-body model and even for the multibody model and lay important theory foundation to guide the stability study of soft strata composed of different geologic bodies. |
url |
http://dx.doi.org/10.1155/2014/750504 |
work_keys_str_mv |
AT zenghuizhao analyticalsolutionofinterfaceeffectonthestrengthofcombinedmodelcomposedofdifferentgeologicbodies AT weimingwang analyticalsolutionofinterfaceeffectonthestrengthofcombinedmodelcomposedofdifferentgeologicbodies AT lihuawang analyticalsolutionofinterfaceeffectonthestrengthofcombinedmodelcomposedofdifferentgeologicbodies AT jixingyan analyticalsolutionofinterfaceeffectonthestrengthofcombinedmodelcomposedofdifferentgeologicbodies |
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