monitoring the threat of sinkhole formation us 18 cerro
play

Monitoring the Threat of Sinkhole Formation US 18, Cerro Gordo Co., - PowerPoint PPT Presentation

Dec 08, 2022 •625 likes •1.08k views

Monitoring the Threat of Sinkhole Formation US 18, Cerro Gordo Co., Iowa Using TDR Kevin M. O'Connor, Ph.D., P.E., GeoTDR Matthew Trainum, Iowa DOT, Office of Design 16 th Annual Technical Forum for Geohazards Impacting Transportation in

  1. Monitoring the Threat of Sinkhole Formation US 18, Cerro Gordo Co., Iowa Using TDR Kevin M. O'Connor, Ph.D., P.E., GeoTDR Matthew Trainum, Iowa DOT, Office of Design 16 th Annual Technical Forum for Geohazards Impacting Transportation in Appalachia Knoxville, TN August 2016 8/ 8/ 2016 1

  2. Site Location and Conditions 8/ 8/ 2016 2

  3. 3 Sinkholes in Iowa 8/ 8/ 2016

  4. 4 8/ 8/ 2016

  5. 5 2004 8/ 8/ 2016

  6. 6 EB inside 8/ 8/ 2016

  7. 7 EB outside 8/ 8/ 2016

  8. 8 EB outside ditch 8/ 8/ 2016

  9. 2004 Investigation A geophysical investigation, to determine the cause of the problem and propose options for remediation, included a Ground Penetrating Radar Survey, a Resistivity Survey, and a Soil Survey (drilling program). No voids were identified beneath or within a couple meters of the pavement. 8/ 8/ 2016 9

  10. 10 2005 2004 8/ 8/ 2016

  11. 11 Outside ROW - South 8/ 8/ 2016

  12. 12 2008 2005 2004 8/ 8/ 2016

  13. Decision +  In 2009, a project was designed for letting that would install a double reinforced inlay, including shoulders, for the designated area of concern on US 18 in Cerro Gordo County, Iowa.  In addition to the inlay, the installation of a Time Domain Reflectometry System (TDR) was chosen as a real-time monitoring device for the formation of voids/ sinkholes under the roadway. 8/ 8/ 2016 13

  14. 14 8/ 8/ 2016

  15. 15 8/ 8/ 2016

  16. 16 8/ 8/ 2016

  17. 17 8/ 8/ 2016

  18. 18 8/ 8/ 2016

  19. 19 8/ 8/ 2016

  20. TDR Principle 8/ 8/ 2016 20

  21. Cables can be grouted into boreholes or trenches to monitor deformation TDR Cable Tester Expansive Cement Grout Crimp In Cable 8/ 8/ 2016 21

  22. Activity up to Present Time 8/ 8/ 2016 22

  23. crimps abrasion Cable shear would produce same reflection as a crimp Ground movement would fracture grout then cable deformation occurs 8/ 8/ 2016 23

  24. Consistent and persistent response on all eight cables Abrasion not Shear Deformation of Cables 8/ 8/ 2016 24

  25. Limited Correlation Among TDR, Geophysics, Drilling, and Sinkholes STA 248+75 8/ 8/ 2016 25

  26. Eastbound STA 248+75 26 8/ 8/ 2016

  27. In Nov 2011 and Jan 2012 exploratory drilling and geophysics did not find voids below pavement 8/ 8/ 2016 27

  28. TIMING – new activity develops between September and March 2011, 2012, 2013, 2014, 2015, 2016 8/ 8/ 2016 28

  29. Possible Causes  Ground Movement – Little or no indication of shear – Movement must cause abrasion  Soil or Grout Shrinkage – Requires sufficient shrinkage to cause abrasion  Frost Heave – Timing of TDR activity does not entirely coincide with period when frost is deepest  Gnawing Animals – IS THIS EVEN A POSSIBILTY?? 8/ 8/ 2016 29

  30. 30 8/ 8/ 2016

  31. 31 8/ 8/ 2016

  32. 32 8/ 8/ 2016

  33. 33 8/ 8/ 2016

  34. 34 8/ 8/ 2016

  35. 35 Additional Evidence of Burrowing 8/ 8/ 2016

  36. 36 8/ 8/ 2016

  37. 37 STA 252+02 Recent TDR Activity 8/ 8/ 2016

  38. 38 STA 252+02 8/ 8/ 2016

  39. 39 8/ 8/ 2016

  40. 40 0.003 mm/day 8/ 8/ 2016

  41. Current Status  The persistence and consistency indicate valid data  The cause of cable abrasion is currently indeterminate  Even with this uncertainty, can still detect cable deformation… so monitoring continues 8/ 8/ 2016 41

  42. Questions for You  The cause of cable abrasion is currently indeterminate  Has anyone seen precursor burrowing by animals in karst areas?  Can you suggest other causes?  Why limited to Sept-March? 8/ 8/ 2016 42

  43. Real Time Monitoring with Time Domain Reflectometry (TDR) Kevin M. O'Connor , Ph.D ., P.E. GeoTDR, Inc. Westerville, Ohio www.geotdr.com 8/ 8/ 2016 43

Download Presentation
Download Policy: The content available on the website is offered to you 'AS IS' for your personal information and use only. It cannot be commercialized, licensed, or distributed on other websites without prior consent from the author. To download a presentation, simply click this link. If you encounter any difficulties during the download process, it's possible that the publisher has removed the file from their server.

Recommend

BEDROCK AQUIFER SYSTEMS ACROSS IOWA SOUTHWEST TO NORTHEAST SINKHOLES AND SHALLOW CARBONATE

BEDROCK AQUIFER SYSTEMS ACROSS IOWA SOUTHWEST TO NORTHEAST SINKHOLES AND SHALLOW CARBONATE

BEDROCK AQUIFER SYSTEMS ACROSS IOWA SOUTHWEST TO NORTHEAST SINKHOLES AND SHALLOW CARBONATE BEDROCK ANDERSON, MISSOURI LAGOON SINKHOLE WEST PLAINS, MISSOURI LAGOON SINKHOLE GARNAVILLO, IOWA LAGOON SINKHOLE MIDWEST WIDE AMMONIA CLOUD

431 views • 6 slides
Implementing Consequence-Driven Cybersecurity with Continuous ICS Monitoring & Threat Modeling

Implementing Consequence-Driven Cybersecurity with Continuous ICS Monitoring & Threat Modeling

Implementing Consequence-Driven Cybersecurity with Continuous ICS Monitoring & Threat Modeling Phil Neray, VP of Industrial Cybersecurity Agenda NotPetya: How a Single Piece of Code Crashed the World (Wired) VPNFilter Update

610 views • 24 slides
Monitoring & Controlling Kernel-mode Events by HyperPlatgorm Satoshi Tanda Threat

Monitoring & Controlling Kernel-mode Events by HyperPlatgorm Satoshi Tanda Threat

Monitoring & Controlling Kernel-mode Events by HyperPlatgorm Satoshi Tanda Threat Researcher 1 2 Takeaway If you want to have more ability to monitor and control Windows system actjvitjes in a lightweight manner, HyperPlatgrom is

396 views • 25 slides
Assessment What is Threat Assessment Threat assessment is the process of gathering

Assessment What is Threat Assessment Threat assessment is the process of gathering

Threat Assessment What is Threat Assessment Threat assessment is the process of gathering information to understand the threat of violence posed by a person. Threat management is the process of developing and executing plans to mitigate

332 views • 15 slides
Continuous Asset Discovery, Risk Management & Threat Monitoring for IIoT & ICS Networks

Continuous Asset Discovery, Risk Management & Threat Monitoring for IIoT & ICS Networks

Continuous Asset Discovery, Risk Management & Threat Monitoring for IIoT & ICS Networks SANS Webinar on NIST Recommendations for IIoT & ICS Security With Behavioral Anomaly Detection (BAD) February 28, 2019 Phil Neray, VP of

714 views • 42 slides
Sinkhole Vulnerability Mapping Project Alan Baker, P.G. Clint Kromhout, P.G. Harley Means,

Sinkhole Vulnerability Mapping Project Alan Baker, P.G. Clint Kromhout, P.G. Harley Means,

Florida Department of Environmental Protection Sinkhole Vulnerability Mapping Project Alan Baker, P.G. Clint Kromhout, P.G. Harley Means, P.G. Office of the Florida Geological Survey State Hazard Mitigation Plan Advisory Team Meeting , July

387 views • 16 slides
Monitoring of membrane failure due to pinhole formation Viktor Hacker, Eva Wallnfer Department

Monitoring of membrane failure due to pinhole formation Viktor Hacker, Eva Wallnfer Department

Monitoring of membrane failure due to pinhole formation Viktor Hacker, Eva Wallnfer Department of Chemical Engineering and Environmental Technology, TU GRAZ, Austria Peter Prenninger AVL List GmbH, Austria Trondheim, June 23 rd ,2009

474 views • 20 slides
MONITORING OF WASTE AND FORMATION WATERS USING RAMAN SPECTROSCOPY AND ARTIFICIAL NEURAL NETWORK

MONITORING OF WASTE AND FORMATION WATERS USING RAMAN SPECTROSCOPY AND ARTIFICIAL NEURAL NETWORK

MONITORING OF WASTE AND FORMATION WATERS USING RAMAN SPECTROSCOPY AND ARTIFICIAL NEURAL NETWORK K.A. Laptinskiy, S.A. Burikov, T.A. Dolenko, A.O. Efitorov, and S.A. Dolenko Human impact on the environment 3rd Student Workshop on Ecology and

290 views • 10 slides
Phases of Disaster Despair Threat Threat Phase: Small events serve as a warning or threat to

Phases of Disaster Despair Threat Threat Phase: Small events serve as a warning or threat to

Honeymoon Threat Restoration Rescue Phases of Disaster Despair Threat Threat Phase: Small events serve as a warning or threat to normal living. A disaster has not yet oc- curred, but there is a sense of impending doom. Individual

604 views • 6 slides
On the Effectiveness of Distributed Worm Monitoring Moheeb Abu Rajab Fabian Monrose Andreas

On the Effectiveness of Distributed Worm Monitoring Moheeb Abu Rajab Fabian Monrose Andreas

On the Effectiveness of Distributed Worm Monitoring Moheeb Abu Rajab Fabian Monrose Andreas Terzis Computer Science Department Johns Hopkins University 1 Monitoring Internet Threats Threat monitoring techniques: Intrusion detection

510 views • 24 slides
What Does This Advanced Threat Landscape Look Like? Advanced Threat Landscape

What Does This Advanced Threat Landscape Look Like? Advanced Threat Landscape

DDoS & Modern Threat Motives Dan Holden Director, ASERT What Does This Advanced Threat Landscape Look Like? Advanced Threat Landscape Geo-poli:cal More defenses ? App/Content t a

1.13k views • 44 slides
Darren Klinck | President, CEO & Director Cerro Blanco Feasibility Study Presentation January

Darren Klinck | President, CEO & Director Cerro Blanco Feasibility Study Presentation January

Darren Klinck | President, CEO & Director Cerro Blanco Feasibility Study Presentation January 2019 Vision A leading natural resource company driving stakeholder value through responsible, sustainable, and innovative development Forward

444 views • 33 slides
Dwarf Galaxy Formation with Dwarf Galaxy Formation with H 2 -regulated Star Formation H 2

Dwarf Galaxy Formation with Dwarf Galaxy Formation with H 2 -regulated Star Formation H 2

Dwarf Galaxy Formation with Dwarf Galaxy Formation with H 2 -regulated Star Formation H 2 -regulated Star Formation Michael Kuhlen, UC Berkeley arXiv:1105.2376 w/ M. Krumholz, P. Madau, B. Smith, J. Wise August 9 th 2011 2011 UC Santa Cruz

708 views • 33 slides
Active Threat on Campus Prevention & Response Active threat defined An active threat can be

Active Threat on Campus Prevention & Response Active threat defined An active threat can be

Active Threat on Campus Prevention & Response Active threat defined An active threat can be defined as: A person whose immediate activity can cause death and/or serious injury An active threat can involve a firearm or another

395 views • 15 slides
Image formation How are objects in the world captured in Image formation an image? Matlab

Image formation How are objects in the world captured in Image formation an image? Matlab

Image formation How are objects in the world captured in Image formation an image? Matlab tutorial Tuesday, Sept 2 Image formation Physical parameters of image formation object film Geometric Type of projection Camera

190 views • 8 slides
Offensive Threat Modeling for Attackers turning threat modeling on its head Rafal M. Los

Offensive Threat Modeling for Attackers turning threat modeling on its head Rafal M. Los

Offensive Threat Modeling for Attackers turning threat modeling on its head Rafal M. Los Chief Security Evangelist HP Software Shane MacDougall Principal Tactical Intelligence Modern threat modeling is a defensive response to

783 views • 52 slides
www.rodecon.co.za Extra Abrasion Liner (EAL) www.rodecon.co.za Extra Abrasion Liner (EAL)

www.rodecon.co.za Extra Abrasion Liner (EAL) www.rodecon.co.za Extra Abrasion Liner (EAL)

Extra Abrasion Liner (EAL) www.rodecon.co.za Extra Abrasion Liner (EAL) www.rodecon.co.za Extra Abrasion Liner (EAL) www.rodecon.co.za Extra Abrasion Liner (EAL) www.rodecon.co.za Extra Abrasion Liner (EAL) www.rodecon.co.za Extra

1.41k views • 31 slides
MATERIALS We have developed a worldwide unique technology that we call deconstruction

MATERIALS We have developed a worldwide unique technology that we call deconstruction

MATERIALS We have developed a worldwide unique technology that we call deconstruction technology that allows us to extract the tire treads from the wheels in optimum conditions maintaining its structural and chemical properties TIRE- TREADS,

471 views • 12 slides
Next Generation of Field Applied Liquid Coatings Aneece Yousif 3M TM Company Electrical Market

Next Generation of Field Applied Liquid Coatings Aneece Yousif 3M TM Company Electrical Market

Next Generation of Field Applied Liquid Coatings Aneece Yousif 3M TM Company Electrical Market Division Austin, TX, USA Phone +1 (512) 984-2805 ayousif@mmm.com 2014 PDA Annual Conference Hilton Houston Post Oak March 24 26, 2014 Pipe

871 views • 20 slides
Estelite Universal Flow ESTELITE UNIVERSAL FLOW Introduction to Flowable Composites Flowable

Estelite Universal Flow ESTELITE UNIVERSAL FLOW Introduction to Flowable Composites Flowable

Estelite Universal Flow ESTELITE UNIVERSAL FLOW Introduction to Flowable Composites Flowable composites were introduced as a less viscous material, offering better adaption to the cavity wall Flowables can reach areas that are difficult

1.14k views • 25 slides
SURFACE BY HAY / Created by HAY & Kvadrat HAY SURFACE BY HAY Surface by HAY is a new private

SURFACE BY HAY / Created by HAY & Kvadrat HAY SURFACE BY HAY Surface by HAY is a new private

SURFACE BY HAY / Created by HAY & Kvadrat HAY SURFACE BY HAY Surface by HAY is a new private label fabric developed in collaboration between HAY and Kvadrat. The fabric is available through HAY stores and dealers exclusively for HAY and

925 views • 9 slides
Life begins at forty (thousand kilometers!) Innovative Agricultural and Industrial Tire

Life begins at forty (thousand kilometers!) Innovative Agricultural and Industrial Tire

Life begins at forty (thousand kilometers!) Innovative Agricultural and Industrial Tire Development 3 rd 4 th December 2015 Chris Twigg >> The Black Bear Team, who we are, what we do and where were heading >>

778 views • 26 slides
HARBOUR GREEN DOCK Proposed Change of Use, Management & Maintenance Park Board Committee

HARBOUR GREEN DOCK Proposed Change of Use, Management & Maintenance Park Board Committee

HARBOUR GREEN DOCK Proposed Change of Use, Management & Maintenance Park Board Committee Meeting April 15, 2019 Purpose of Presentation T o provide an update to the Board on the history and current condition of Harbour Green Dock and

287 views • 26 slides
Electronic Visit Verification File Specification: Visit Interface Electronic Visit Verification

Electronic Visit Verification File Specification: Visit Interface Electronic Visit Verification

Electronic Visit Verification File Specification: Visit Interface Electronic Visit Verification Project February 26, 2020 Welcome HMOs, MCOs, IRIS FEAs Sandata team (EVV vendor) Wisconsin Department of Health Services team

941 views • 47 slides

More recommend