Experimental Investigation of Non-Darcy Flow in Sandstone

Xiaoyan Ni; Pinnaduwa H.S.W. Kulatilake; Zhanqing Chen; Peng Gong; Hailing Kong

doi:10.1007/s10706-016-9992-y

Experimental Investigation of Non-Darcy Flow in Sandstone

Xiaoyan Ni, Pinnaduwa H.S.W. Kulatilake, Zhanqing Chen, Peng Gong, Hailing Kong

Mining and Geological Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A study was conducted to investigate non-Darcy flow for sandstone using an experimental system designed and constructed by the research group. Non-Darcy flow was found to exist for both the pre-peak and post-peak strains; post-peak flow behavior showed a higher level of non-Darcy flow. In addition, the post peak permeability turned out to be about 2–3 times that of the pre-peak permeability. This sudden change in permeability that occurs when sedimentary rock masses around underground excavations develop new fractures may lead to water inrush in coal mines. All three non-Darcy permeability parameters showed significant changes between the pre-peak and post peak strains. The main reason for that is the formation of new cracks around and after the peak stress. Relations are developed among the three non-Darcy permeability parameters.

Original language	English (US)
Pages (from-to)	1835-1846
Number of pages	12
Journal	Geotechnical and Geological Engineering
Volume	34
Issue number	6
DOIs	https://doi.org/10.1007/s10706-016-9992-y
State	Published - Dec 1 2016

Keywords

Acceleration coefficient
Coal mines
Non-Darcy flow β factor
Permeability
Transient seepage method

ASJC Scopus subject areas

Architecture
Geotechnical Engineering and Engineering Geology
Soil Science
Geology

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10.1007/s10706-016-9992-y

Cite this

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title = "Experimental Investigation of Non-Darcy Flow in Sandstone",

abstract = "A study was conducted to investigate non-Darcy flow for sandstone using an experimental system designed and constructed by the research group. Non-Darcy flow was found to exist for both the pre-peak and post-peak strains; post-peak flow behavior showed a higher level of non-Darcy flow. In addition, the post peak permeability turned out to be about 2–3 times that of the pre-peak permeability. This sudden change in permeability that occurs when sedimentary rock masses around underground excavations develop new fractures may lead to water inrush in coal mines. All three non-Darcy permeability parameters showed significant changes between the pre-peak and post peak strains. The main reason for that is the formation of new cracks around and after the peak stress. Relations are developed among the three non-Darcy permeability parameters.",

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author = "Xiaoyan Ni and Kulatilake, {Pinnaduwa H.S.W.} and Zhanqing Chen and Peng Gong and Hailing Kong",

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AU - Ni, Xiaoyan

AU - Kulatilake, Pinnaduwa H.S.W.

AU - Chen, Zhanqing

AU - Gong, Peng

AU - Kong, Hailing

PY - 2016/12/1

Y1 - 2016/12/1

N2 - A study was conducted to investigate non-Darcy flow for sandstone using an experimental system designed and constructed by the research group. Non-Darcy flow was found to exist for both the pre-peak and post-peak strains; post-peak flow behavior showed a higher level of non-Darcy flow. In addition, the post peak permeability turned out to be about 2–3 times that of the pre-peak permeability. This sudden change in permeability that occurs when sedimentary rock masses around underground excavations develop new fractures may lead to water inrush in coal mines. All three non-Darcy permeability parameters showed significant changes between the pre-peak and post peak strains. The main reason for that is the formation of new cracks around and after the peak stress. Relations are developed among the three non-Darcy permeability parameters.

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KW - Acceleration coefficient

KW - Coal mines

KW - Non-Darcy flow β factor

KW - Permeability

KW - Transient seepage method

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Experimental Investigation of Non-Darcy Flow in Sandstone

Abstract

Keywords

ASJC Scopus subject areas

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