Investigation of stability of a tunnel in a deep coal mine in China

P. H.S.W. Kulatilake; Qiong Wu; Zhengxing Yu; Fuxing Jiang

doi:10.1016/j.ijmst.2013.07.018

Investigation of stability of a tunnel in a deep coal mine in China

P. H.S.W. Kulatilake, Qiong Wu, Zhengxing Yu, Fuxing Jiang

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

70 Scopus citations

Abstract

Stability level of tunnels that exist in an underground mine has a great influence on the safety, production and economic performance of mines. Ensuring of stability for soft-rock tunnels is an important task for deep coal mines located in high in situ stress conditions. Using the available information on stratigraphy, geological structures, in situ stress measurements and geo-mechanical properties of intact rock and discontinuity interfaces, a three-dimensional numerical model was built by using 3DEC software to simulate the stress conditions around a tunnel located under high in situ stress conditions in a coal rock mass in China. Analyses were conducted for several tunnel shapes and rock support patterns. Results obtained for the distribution of failure zones, and stress and displacement fields around the tunnel were compared to select the best tunnel shape and support pattern to achieve the optimum stability conditions.

Original language	English (US)
Pages (from-to)	579-589
Number of pages	11
Journal	International Journal of Mining Science and Technology
Volume	23
Issue number	4
DOIs	https://doi.org/10.1016/j.ijmst.2013.07.018
State	Published - Jul 2013
Externally published	Yes

Keywords

3DEC
Coal mine
High in situ stress
Numerical modeling
Tunnel stability

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Energy Engineering and Power Technology
Geochemistry and Petrology

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10.1016/j.ijmst.2013.07.018

Cite this

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title = "Investigation of stability of a tunnel in a deep coal mine in China",

abstract = "Stability level of tunnels that exist in an underground mine has a great influence on the safety, production and economic performance of mines. Ensuring of stability for soft-rock tunnels is an important task for deep coal mines located in high in situ stress conditions. Using the available information on stratigraphy, geological structures, in situ stress measurements and geo-mechanical properties of intact rock and discontinuity interfaces, a three-dimensional numerical model was built by using 3DEC software to simulate the stress conditions around a tunnel located under high in situ stress conditions in a coal rock mass in China. Analyses were conducted for several tunnel shapes and rock support patterns. Results obtained for the distribution of failure zones, and stress and displacement fields around the tunnel were compared to select the best tunnel shape and support pattern to achieve the optimum stability conditions.",

keywords = "3DEC, Coal mine, High in situ stress, Numerical modeling, Tunnel stability",

author = "Kulatilake, {P. H.S.W.} and Qiong Wu and Zhengxing Yu and Fuxing Jiang",

note = "Funding Information: The second and third authors of the paper are grateful to the Chinese Scholarship Council for providing scholarships to conduct the research described in this paper as Visiting Research Scholars at the University of Arizona. The authors would like to acknowledge Xiezhuang Coal Mine for providing funding and good quality laboratory and field data for this research. The help provided by Mr. Luofeng Wang, working in China Molybdenum Co. Ltd., with respect to this research is very much appreciated.",

year = "2013",

month = jul,

doi = "10.1016/j.ijmst.2013.07.018",

language = "English (US)",

volume = "23",

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AU - Kulatilake, P. H.S.W.

AU - Wu, Qiong

AU - Yu, Zhengxing

AU - Jiang, Fuxing

N1 - Funding Information: The second and third authors of the paper are grateful to the Chinese Scholarship Council for providing scholarships to conduct the research described in this paper as Visiting Research Scholars at the University of Arizona. The authors would like to acknowledge Xiezhuang Coal Mine for providing funding and good quality laboratory and field data for this research. The help provided by Mr. Luofeng Wang, working in China Molybdenum Co. Ltd., with respect to this research is very much appreciated.

PY - 2013/7

Y1 - 2013/7

N2 - Stability level of tunnels that exist in an underground mine has a great influence on the safety, production and economic performance of mines. Ensuring of stability for soft-rock tunnels is an important task for deep coal mines located in high in situ stress conditions. Using the available information on stratigraphy, geological structures, in situ stress measurements and geo-mechanical properties of intact rock and discontinuity interfaces, a three-dimensional numerical model was built by using 3DEC software to simulate the stress conditions around a tunnel located under high in situ stress conditions in a coal rock mass in China. Analyses were conducted for several tunnel shapes and rock support patterns. Results obtained for the distribution of failure zones, and stress and displacement fields around the tunnel were compared to select the best tunnel shape and support pattern to achieve the optimum stability conditions.

AB - Stability level of tunnels that exist in an underground mine has a great influence on the safety, production and economic performance of mines. Ensuring of stability for soft-rock tunnels is an important task for deep coal mines located in high in situ stress conditions. Using the available information on stratigraphy, geological structures, in situ stress measurements and geo-mechanical properties of intact rock and discontinuity interfaces, a three-dimensional numerical model was built by using 3DEC software to simulate the stress conditions around a tunnel located under high in situ stress conditions in a coal rock mass in China. Analyses were conducted for several tunnel shapes and rock support patterns. Results obtained for the distribution of failure zones, and stress and displacement fields around the tunnel were compared to select the best tunnel shape and support pattern to achieve the optimum stability conditions.

KW - 3DEC

KW - Coal mine

KW - High in situ stress

KW - Numerical modeling

KW - Tunnel stability

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Investigation of stability of a tunnel in a deep coal mine in China

Abstract

Keywords

ASJC Scopus subject areas

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