Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock

With the development of tunnels and other engineering constructions into the deep strata, rock masses are more prone to dynamic damage such as rock bursts under in situ conditions and excavation disturbances. The pore water in the rock mass will produce pressure changes during this process. Accordin...

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Autor principal:	Yuezheng Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/88c8cba24a3e42d683b7aba73f1f1ddd
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spelling	oai:doaj.org-article:88c8cba24a3e42d683b7aba73f1f1ddd2021-11-22T01:09:59ZStudy on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock1875-920310.1155/2021/8575108https://doaj.org/article/88c8cba24a3e42d683b7aba73f1f1ddd2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/8575108https://doaj.org/toc/1875-9203With the development of tunnels and other engineering constructions into the deep strata, rock masses are more prone to dynamic damage such as rock bursts under in situ conditions and excavation disturbances. The pore water in the rock mass will produce pressure changes during this process. According to the relationship between the change of pore water pressure and the development of rock mass damage, the variation rule and precursor characteristics of pore water pressure in the process of rock mass failure can be found. In this paper, through mechanical analysis, the evolution law of pore water pressure during the failure process of saturated rock is obtained. The study found that, in the process of rock failure, the pore water pressure presents three stages of linear growth, transition, and decrease. The rise and fall of pore water pressure are closely related to rock damage and influence each other. Through the observation of pore water pressure during coal mining, it is found that the coseismic effect of pore water pressure is significant. It is proved that there is a close correlation between the evolution of the stress field in the surrounding area of the stope and the change of pore water pressure in the surrounding area under the effect of mining disturbance. During the engineering practice, dynamic monitoring can be carried out on the change of pore water pressure inside the rock mass according to the law, and the precursor information of rock mass instability and failure can be explored.Yuezheng ZhangHindawi LimitedarticlePhysicsQC1-999ENShock and Vibration, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Yuezheng Zhang Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock
description	With the development of tunnels and other engineering constructions into the deep strata, rock masses are more prone to dynamic damage such as rock bursts under in situ conditions and excavation disturbances. The pore water in the rock mass will produce pressure changes during this process. According to the relationship between the change of pore water pressure and the development of rock mass damage, the variation rule and precursor characteristics of pore water pressure in the process of rock mass failure can be found. In this paper, through mechanical analysis, the evolution law of pore water pressure during the failure process of saturated rock is obtained. The study found that, in the process of rock failure, the pore water pressure presents three stages of linear growth, transition, and decrease. The rise and fall of pore water pressure are closely related to rock damage and influence each other. Through the observation of pore water pressure during coal mining, it is found that the coseismic effect of pore water pressure is significant. It is proved that there is a close correlation between the evolution of the stress field in the surrounding area of the stope and the change of pore water pressure in the surrounding area under the effect of mining disturbance. During the engineering practice, dynamic monitoring can be carried out on the change of pore water pressure inside the rock mass according to the law, and the precursor information of rock mass instability and failure can be explored.
format	article
author	Yuezheng Zhang
author_facet	Yuezheng Zhang
author_sort	Yuezheng Zhang
title	Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock
title_short	Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock
title_full	Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock
title_fullStr	Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock
title_full_unstemmed	Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock
title_sort	study on the variation rule and characteristics of pore water pressure in the failure process of saturated rock
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/88c8cba24a3e42d683b7aba73f1f1ddd
work_keys_str_mv	AT yuezhengzhang studyonthevariationruleandcharacteristicsofporewaterpressureinthefailureprocessofsaturatedrock
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Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock

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