Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.

This study is to theoretically and experimentally investigate the propagation of stress waves in the filled joint set. The time-domain recursive method is used to derive the propagation equations in the filled joint set, and the filled joints are further simplified into structural planes without joi...

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Autores principales:	Shuailong Jia, Zhiliang Wang, Jianguo Wang, Zhitang Lu, Haochen Wang
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ec5ee57dffba467da67d47852d5dddc3
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id	oai:doaj.org-article:ec5ee57dffba467da67d47852d5dddc3
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spelling	oai:doaj.org-article:ec5ee57dffba467da67d47852d5dddc32021-12-02T20:08:25ZExperimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.1932-620310.1371/journal.pone.0253392https://doaj.org/article/ec5ee57dffba467da67d47852d5dddc32021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0253392https://doaj.org/toc/1932-6203This study is to theoretically and experimentally investigate the propagation of stress waves in the filled joint set. The time-domain recursive method is used to derive the propagation equations in the filled joint set, and the filled joints are further simplified into structural planes without joint thickness. The split-Hopkinson rock bar is modified to simulate P wave propagation normally across the parallel filled joints. The relationship among stress-closure curve, joint specific stiffness, transmission coefficient and loading rate is analyzed. The results show that, for the rock mass with a single joint, both the joint specific stiffness and transmission coefficient of different filling materials increase with loading rate. More serious particle breakage of the filling materials leads to lower joint specific stiffness and transmission coefficient. For the rock mass with two joints, the joint specific stiffness of each joint affects the transmission coefficient of the filled joint set. It is found that our theoretical calculations are basically consistent with the experimental ones, and the joint specific stiffness can well characterize the propagation behavior of stress wave in the filled parallel rock joints.Shuailong JiaZhiliang WangJianguo WangZhitang LuHaochen WangPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0253392 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shuailong Jia Zhiliang Wang Jianguo Wang Zhitang Lu Haochen Wang Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.
description	This study is to theoretically and experimentally investigate the propagation of stress waves in the filled joint set. The time-domain recursive method is used to derive the propagation equations in the filled joint set, and the filled joints are further simplified into structural planes without joint thickness. The split-Hopkinson rock bar is modified to simulate P wave propagation normally across the parallel filled joints. The relationship among stress-closure curve, joint specific stiffness, transmission coefficient and loading rate is analyzed. The results show that, for the rock mass with a single joint, both the joint specific stiffness and transmission coefficient of different filling materials increase with loading rate. More serious particle breakage of the filling materials leads to lower joint specific stiffness and transmission coefficient. For the rock mass with two joints, the joint specific stiffness of each joint affects the transmission coefficient of the filled joint set. It is found that our theoretical calculations are basically consistent with the experimental ones, and the joint specific stiffness can well characterize the propagation behavior of stress wave in the filled parallel rock joints.
format	article
author	Shuailong Jia Zhiliang Wang Jianguo Wang Zhitang Lu Haochen Wang
author_facet	Shuailong Jia Zhiliang Wang Jianguo Wang Zhitang Lu Haochen Wang
author_sort	Shuailong Jia
title	Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.
title_short	Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.
title_full	Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.
title_fullStr	Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.
title_full_unstemmed	Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.
title_sort	experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/ec5ee57dffba467da67d47852d5dddc3
work_keys_str_mv	AT shuailongjia experimentalandtheoreticalstudyonthepropagationcharacteristicsofstresswaveinfilledjointedrockmass AT zhiliangwang experimentalandtheoreticalstudyonthepropagationcharacteristicsofstresswaveinfilledjointedrockmass AT jianguowang experimentalandtheoreticalstudyonthepropagationcharacteristicsofstresswaveinfilledjointedrockmass AT zhitanglu experimentalandtheoreticalstudyonthepropagationcharacteristicsofstresswaveinfilledjointedrockmass AT haochenwang experimentalandtheoreticalstudyonthepropagationcharacteristicsofstresswaveinfilledjointedrockmass
_version_	1718375214948024320

Experimental and theoretical study on the propagation characteristics of stress wave in filled jointed rock mass.

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