The hydromechanical behaviour of the Boom Clay observed during excavation of the connecting gallery at Mol site

Xiang Ling Li; Wim Bastiaens; Frédéric Bernier

doi:10.1201/9781439833469.ch67

The hydromechanical behaviour of the Boom Clay observed during excavation of the connecting gallery at Mol site

Xiang Ling Li, Wim Bastiaens, Frédéric Bernier

Research output › peer-review

Abstract

Boom Clay formation has been selected as a potential host rock for the geological disposal of radioactive wastes in Belgium. An Underground Research Facility (URF) in Boom Clay formation at a depth of about 223m at Mol site was built to investigate and demonstrate the feasibility of the disposal concepts and to provide reliable data on the performance of Boom Clay as a host rock. The URF was extended by sinking a second shaft and excavating a connecting gallery that provided a unique and original opportunity to monitor the hydromechanical responses of the Boom Clay ahead of the excavation front thanks to the instrumentation installed in-situ (CLIPEX program). The most important observation is the very extended excavation dis-turbed zone that cannot be replicated by a classical elasto-plastic constitutive law, which gave however reli-able predictions of instantaneous convergence in the near field. Further investigation is necessary to explain this extended disturbed zone, especially variation of pore water pressure in the far field.

Original language	English
Title of host publication	Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics
Subtitle of host publication	Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006, Liege, Belgium, 9-12 May 2006
Place of Publication	London, British Indian Ocean Territory
Publisher	Taylor & Francis (CRC)
Pages	467-472
Number of pages	6
Volume	1
ISBN (Print)	9780415402651, 0415410010, 9780415410014
DOIs	https://doi.org/10.1201/9781439833469.ch67
State	Published - 12 May 2006
Event	Eurock 2006 - Multiphysics Coupling and Long Term Behaviour in Rock Mechanics: Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006, Liège, Belgium, 9-12 May 2006 - Belgian Rock Mechanics Society, Liege Duration: 9 May 2006 → 12 May 2006 https://www.routledge.com/Eurock-2006-Multiphysics-Coupling-and-Long-Term-Behaviour-in-Rock-Mechanics-Proceedings-of-the-International-Symposium-of-the-International-/Cotthem-Charlier-Thimus-Tshibangu/p/book/9780415410014

Publication series

Name	Proceedings and Monographs in Engineering, Water and Earth Sciences

Conference

Conference	Eurock 2006 - Multiphysics Coupling and Long Term Behaviour in Rock Mechanics
Country/Territory	Belgium
City	Liege
Period	2006-05-09 → 2006-05-12
Internet address	https://www.routledge.com/Eurock-2006-Multiphysics-Coupling-and-Long-Term-Behaviour-in-Rock-Mechanics-Proceedings-of-the-International-Symposium-of-the-International-/Cotthem-Charlier-Thimus-Tshibangu/p/book/9780415410014

Access to Document

10.1201/9781439833469.ch67License: Unspecified

Cite this

Li, X. L., Bastiaens, W., & Bernier, F. (2006). The hydromechanical behaviour of the Boom Clay observed during excavation of the connecting gallery at Mol site. In Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics: Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006, Liege, Belgium, 9-12 May 2006 (Vol. 1, pp. 467-472). (Proceedings and Monographs in Engineering, Water and Earth Sciences). Taylor & Francis (CRC). https://doi.org/10.1201/9781439833469.ch67

Li, Xiang Ling ; Bastiaens, Wim ; Bernier, Frédéric. / The hydromechanical behaviour of the Boom Clay observed during excavation of the connecting gallery at Mol site. Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics: Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006, Liege, Belgium, 9-12 May 2006 . Vol. 1 London, British Indian Ocean Territory : Taylor & Francis (CRC), 2006. pp. 467-472 (Proceedings and Monographs in Engineering, Water and Earth Sciences).

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abstract = "Boom Clay formation has been selected as a potential host rock for the geological disposal of radioactive wastes in Belgium. An Underground Research Facility (URF) in Boom Clay formation at a depth of about 223m at Mol site was built to investigate and demonstrate the feasibility of the disposal concepts and to provide reliable data on the performance of Boom Clay as a host rock. The URF was extended by sinking a second shaft and excavating a connecting gallery that provided a unique and original opportunity to monitor the hydromechanical responses of the Boom Clay ahead of the excavation front thanks to the instrumentation installed in-situ (CLIPEX program). The most important observation is the very extended excavation dis-turbed zone that cannot be replicated by a classical elasto-plastic constitutive law, which gave however reli-able predictions of instantaneous convergence in the near field. Further investigation is necessary to explain this extended disturbed zone, especially variation of pore water pressure in the far field.",

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Li, XL, Bastiaens, W & Bernier, F 2006, The hydromechanical behaviour of the Boom Clay observed during excavation of the connecting gallery at Mol site. in Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics: Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006, Liege, Belgium, 9-12 May 2006 . vol. 1, Proceedings and Monographs in Engineering, Water and Earth Sciences, Taylor & Francis (CRC), London, British Indian Ocean Territory, pp. 467-472, Eurock 2006 - Multiphysics Coupling and Long Term Behaviour in Rock Mechanics, Liege, Belgium, 2006-05-09. https://doi.org/10.1201/9781439833469.ch67

The hydromechanical behaviour of the Boom Clay observed during excavation of the connecting gallery at Mol site. / Li, Xiang Ling; Bastiaens, Wim; Bernier, Frédéric.
Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics: Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006, Liege, Belgium, 9-12 May 2006 . Vol. 1 London, British Indian Ocean Territory: Taylor & Francis (CRC), 2006. p. 467-472 (Proceedings and Monographs in Engineering, Water and Earth Sciences).

Research output › peer-review

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AU - Li, Xiang Ling

AU - Bastiaens, Wim

AU - Bernier, Frédéric

N1 - Score = 1 DOI 10.1201/9781439833469.ch67 doesn't work

PY - 2006/5/12

Y1 - 2006/5/12

N2 - Boom Clay formation has been selected as a potential host rock for the geological disposal of radioactive wastes in Belgium. An Underground Research Facility (URF) in Boom Clay formation at a depth of about 223m at Mol site was built to investigate and demonstrate the feasibility of the disposal concepts and to provide reliable data on the performance of Boom Clay as a host rock. The URF was extended by sinking a second shaft and excavating a connecting gallery that provided a unique and original opportunity to monitor the hydromechanical responses of the Boom Clay ahead of the excavation front thanks to the instrumentation installed in-situ (CLIPEX program). The most important observation is the very extended excavation dis-turbed zone that cannot be replicated by a classical elasto-plastic constitutive law, which gave however reli-able predictions of instantaneous convergence in the near field. Further investigation is necessary to explain this extended disturbed zone, especially variation of pore water pressure in the far field.

AB - Boom Clay formation has been selected as a potential host rock for the geological disposal of radioactive wastes in Belgium. An Underground Research Facility (URF) in Boom Clay formation at a depth of about 223m at Mol site was built to investigate and demonstrate the feasibility of the disposal concepts and to provide reliable data on the performance of Boom Clay as a host rock. The URF was extended by sinking a second shaft and excavating a connecting gallery that provided a unique and original opportunity to monitor the hydromechanical responses of the Boom Clay ahead of the excavation front thanks to the instrumentation installed in-situ (CLIPEX program). The most important observation is the very extended excavation dis-turbed zone that cannot be replicated by a classical elasto-plastic constitutive law, which gave however reli-able predictions of instantaneous convergence in the near field. Further investigation is necessary to explain this extended disturbed zone, especially variation of pore water pressure in the far field.

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KW - far field

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BT - Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics

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Li XL, Bastiaens W, Bernier F. The hydromechanical behaviour of the Boom Clay observed during excavation of the connecting gallery at Mol site. In Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics: Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006, Liege, Belgium, 9-12 May 2006 . Vol. 1. London, British Indian Ocean Territory: Taylor & Francis (CRC). 2006. p. 467-472. (Proceedings and Monographs in Engineering, Water and Earth Sciences). doi: 10.1201/9781439833469.ch67