Field evidence and numerical simulation of scale effect of hydraulic conductivity

Chengpeng Lu, Longcang Shu, Xunhong Chen, Ying Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Scale effects of hydraulic conductivity (K) are often reported from the results of different kinds of field aquifer tests. However, the scale effects of K. values estimated by pumping tests are rarely discussed separately. In this study, field tests, which were conducted in Houzhai karst basin, southwestern China, were used to test the scale effect of K. The support volume and nominal length were separately regarded as the measurement scale. Numerous numerical pumping tests were performed in the hypothetic heterogeneous aquifers to evaluate the scale effect using the estimated K values in pumping tests. The results of the different field tests provided the verification of the scale effect of K. While the nominal length was considered as the measurement scale, the scale effect of K is not significant due to the paucity of field tests. The scale effect of K was reproduced using numerical pumping tests in heterogeneous aquifers, and becomes significant as the heterogeneity of the aquifer increases. With respect to a mildly heterogeneous aquifer in this study, it is difficult to find the sharp increasing trend between K and the measurement scale because the difference between the high K zone and low K zone is relatively small.

Original languageEnglish (US)
Title of host publicationHydrological Cycle and Water Resources Sustainability in Changing Environments
Pages481-487
Number of pages7
StatePublished - Dec 1 2011
Event5th International Symposium on Integrated Water Resources Management, IWRM 2010 and the 3rd International Symposium on Methodology in Hydrology - Nanjing, China
Duration: Nov 19 2010Nov 21 2010

Publication series

NameIAHS-AISH Publication
Volume350
ISSN (Print)0144-7815

Conference

Conference5th International Symposium on Integrated Water Resources Management, IWRM 2010 and the 3rd International Symposium on Methodology in Hydrology
CountryChina
CityNanjing
Period11/19/1011/21/10

Fingerprint

scale effect
hydraulic conductivity
simulation
aquifer
pumping
test
karst

Keywords

  • Heterogeneous aquifer
  • Hydraulic conductivity
  • Karst medium
  • Measurement scale
  • Pumping test
  • Scale effect

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Cite this

Lu, C., Shu, L., Chen, X., & Zhang, Y. (2011). Field evidence and numerical simulation of scale effect of hydraulic conductivity. In Hydrological Cycle and Water Resources Sustainability in Changing Environments (pp. 481-487). (IAHS-AISH Publication; Vol. 350).

Field evidence and numerical simulation of scale effect of hydraulic conductivity. / Lu, Chengpeng; Shu, Longcang; Chen, Xunhong; Zhang, Ying.

Hydrological Cycle and Water Resources Sustainability in Changing Environments. 2011. p. 481-487 (IAHS-AISH Publication; Vol. 350).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lu, C, Shu, L, Chen, X & Zhang, Y 2011, Field evidence and numerical simulation of scale effect of hydraulic conductivity. in Hydrological Cycle and Water Resources Sustainability in Changing Environments. IAHS-AISH Publication, vol. 350, pp. 481-487, 5th International Symposium on Integrated Water Resources Management, IWRM 2010 and the 3rd International Symposium on Methodology in Hydrology, Nanjing, China, 11/19/10.
Lu C, Shu L, Chen X, Zhang Y. Field evidence and numerical simulation of scale effect of hydraulic conductivity. In Hydrological Cycle and Water Resources Sustainability in Changing Environments. 2011. p. 481-487. (IAHS-AISH Publication).
Lu, Chengpeng ; Shu, Longcang ; Chen, Xunhong ; Zhang, Ying. / Field evidence and numerical simulation of scale effect of hydraulic conductivity. Hydrological Cycle and Water Resources Sustainability in Changing Environments. 2011. pp. 481-487 (IAHS-AISH Publication).
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