Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/107265
Title: Back-analysis approach for the determination of hydraulic conductivity in rock caverns
Authors: Xu, Zhipeng
Zhao, Zhiye
Sun, Jianping
He, Lei
Nie, Wen
Keywords: DRNTU::Engineering::Civil engineering::Construction technology
Issue Date: 2015
Source: Xu, Z., Zhao, Z., Sun, J., He, L., & Nie, W. (2015). Back-analysis approach for the determination of hydraulic conductivity in rock caverns. Tunnelling and underground space technology, 47, 233-238.
Series/Report no.: Tunnelling and underground space technology
Abstract: Water seepage related problem is often the major geological hazard in underground rock excavation. In order to reduce the risk associated with extensive seepage, a reliable hydro-geological model should be established based on the in-situ investigation data. One of the challenges for establishing a reliable hydro-geological model is on how to determine the hydraulic conductivities of the fractured rock masses using the limited in-situ investigation data. In this study, a back-analysis approach for the determination of the hydraulic conductivities along a rock cavern is presented. To take the advantages of both the analytical solutions and the numerical methods, this paper proposed a semi-analytical approach for prediction of the water inflow into caverns with the horseshoe section, and the semi-analytical solution is used for the back-analysis of the hydraulic conductivity around a rock cavern based on the in-situ monitoring data. The hydraulic conductivities are obtained by using the EXCEL spreadsheet’s build-in optimization routine SOLVER to minimize the error function. The computed water inflow into the cavern is compared with the in-situ measured data. The results indicate that the derived hydraulic conductivity is acceptable.
URI: https://hdl.handle.net/10356/107265
http://hdl.handle.net/10220/25407
ISSN: 0886-7798
DOI: 10.1016/j.tust.2015.01.008
Rights: © 2015 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Tunnelling and underground space technology, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.tust.2015.01.008].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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