Hydraulic and Hydrologic Model Calibration and Validation for an Earthquake-prone Three-Waters Network

Rahul R. Biswas, Tripti R. Biswas

Abstract


This paper summarises the three-waters network (water, wastewater, storm water) model calibration and validation work undertaken in Christchurch after the devastating 2010–2011 earthquakes. The paper outlines some unusual and unique challenges during model calibration due to continual earthquakes in the region and the post-earthquake rebuild work. In case of water supply network model, the validation peak summer date was chosen carefully so that earthquake-related damage and associated rebuild works would have minimal impact on the captured data. The wastewater network was damaged significantly due to the earthquakes. Wastewater flow data were influenced by earthquake damage and post-earthquake major construction activities. Christchurch’s storm water network faced a number of changes – changes in topography, ground levels, river channels and liquefaction – due to the earthquakes. Ongoing model maintenance and updating was a big challenge during model calibration, and an effective collaboration among various teams – GIS, construction contractors, network operations and survey – was important for data collection, data interpretation, model calibration and validation work.


Full Text:

PDF

References


SD. Garway, D.G. Garway, M. Raina and G.H. Pandya, “Physico-Chemical and Microbiological Study of Piped Water Distribution Systems in an Urban City,” Asian J. Research Chem., 7(1), pp. 11-18, January 2014.

Nidhi, “Potability of Drinking Water,” Research J. Science and Tech., 4(6), pp. 267-273, 2012.

KS. Patil and PK. Patil, “Climate Change and its Impact on Water Scarcity in India,” Int. J. Ad. Social Sciences, 4(4), pp. 183-188, 2016.

PF. Boulos and AT. Andrew, “Fixing the future of wastewater systems with smart network modeling,” Journal of American Water Works Association, 107(4), pp. 72-80. April 2015. (doi: http://dx.doi.org/10.5942/jawwa.2015.107.0057)

PF. Boulos and A. Niraula, “Optimise Operation Using Real-Time Data and Predictive Tools,” Journal Optflow, 42(4), pp. 22-24, 2017 (doi: http://dx.doi.org/10.5991/OPF.2016.42.0022)

RR. Biswas, “Calibrating wastewater hydraulic model during post-earthquake rapid rebuild works,” International Journal for Research in Applied Science and Engineering Technology, 2017; 5 (6), pp. 461–470, 2017.

JG. Uber, D. Boccelli , H. Woo and Y. Su , “Real-Time Network Hydraulic Modelling: Data Transformation, Model Calibration, and Simulation Accuracy,” Technical Report Prepared for National Institute of Home Security, Somerset Kentucky, USA. Available: http://www.uky.edu/WDST/PDFs/[74]%20Real%20Time%20Network%20Hydraulic%20Modeling.pdf . [Accessed: Feb. 10, 2017]

Christchurch Quake Live. Available: http://www.canterburyquakelive.co.nz/Browse/ . [Accessed: Sept. 14, 2017]

RR. Biswas and TR. Biswas, “Modelling Seismic Effects on a Stormwater Network and Post-earthquake Recovery,” International Journal of Computer Sciences and Engineering, 5(9), pp. 63-69, 2017. https://doi.org/10.26438/ijcse/v5i9.5561)

RR. Biswas, “Quantifying the Performance of a Post-earthquake, Post-rebuild Wastewater Network Using Hydraulic Models,” Indian Journal of Science and Technology, 2017, 10(36). doi:10.17485/ijst/2017/v10i36/116944

RR. Biswas, “Hydraulic Modelling for Reliable Lift Station Design and Operation,” i-manager's Journal on Civil Engineering, 2017, 7(4), 60-66. https://doi.org/10.26634/jce.7.4.13805

RR. Biswas, “Evaluating Seismic Effects on a Water Supply Network and Quantifying Post-earthquake Recovery,” unpublished.

D. Johnson and E. O’Neill, “Using hydraulic models to aid the earthquake recovery. Paper presented at the Water New Zealand Annual Conference. September. 2012; Available: https://www.waternz.org.nz/Attachment?Action=Download&Attachment_id=888 . [Accessed: Aug. 24, 2017]

Wastewater Planning User Group, “Code of practice for the hydraulic modelling of sewer systems,” Version 3.001. 2002. Available: http://www.ciwem.org/wp-content/uploads/2016/05/Code-of-Practice-for-the-Hydraulic-Modelling-of-Sewer-Systems.pdf [Accessed: Aug. 24, 2017]

T. Preston and T. Parsons, “Christchurch city mega model – Magic or madness?,” Paper presented at the Water New Zealand Storm Water Conference, Nelson, NZ. May. 2016; Available from: https://www.waternz.org.nz/Attachment?Action=Download&Attachment_id=1878 . [Accessed: October. 17, 2017]

Christchurch City Council (CCC). “Waterways, Wetlands and Drainage Guide,” Part B. Chapter 21., December 2011; Available: https://www.ccc.govt.nz/environment/water/water-policy-and-strategy/waterways-wetlands-and-drainage-guide . [Accessed: January. 10, 2017]

RR. Biswas, “Modelling Seismic effects on a Sewer Network using Infoworks ICM,” Indian Journal of Science and Technology, 2017, 10(39). doi:10.17485/ijst/2017/v10i39/116986.

RR. Biswas, “The Importance of a Three-Waters Hydraulic Modelling Strategy for a Modern Water Authority,” i-manager’s Journal on Civil Engineering, 2018, 8(1), 47-


Refbacks

  • There are currently no refbacks.


------------------------------------------------------------------------------------------------------------------------

The “ADBU Journal of Engineering Technology (AJET)" ISSN:2348-7305

This journal is published under the terms of the Creative Commons Attribution (CC-BY) (http://creativecommons.org/licenses/)

Number of Visitors to this Journal:web counter