1 realtime display of landslide monitoring data russ pennell, dhammika ruberu,cedirdr phil flentje,...
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![Page 1: 1 Realtime display of landslide monitoring data Russ Pennell, Dhammika Ruberu,CEDIRDr Phil Flentje, Faculty of Engineering](https://reader035.vdocuments.us/reader035/viewer/2022062712/56649cad5503460f9496f0c2/html5/thumbnails/1.jpg)
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Realtime displayof landslidemonitoringdata
Russ Pennell, Dhammika Ruberu,CEDIR Dr Phil Flentje, Faculty of Engineering
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Context: Wollongong 80 km S of Sydney
Bulli Pass
Mount OusleyExpressway
1200 to 1800mm rainfall
Wombarra
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Context: Wollongong 80 km S of Sydney
Fall
Flow
Slide
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Context
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Context
![Page 6: 1 Realtime display of landslide monitoring data Russ Pennell, Dhammika Ruberu,CEDIRDr Phil Flentje, Faculty of Engineering](https://reader035.vdocuments.us/reader035/viewer/2022062712/56649cad5503460f9496f0c2/html5/thumbnails/6.jpg)
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Context
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Context: Solution - $40 million bridge
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Monitoring stations
Continuous monitoringstations
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Data
movement2D
rainfall
porepressure
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Collection sites
University ofWollongong
site 141
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Site 141
60 m
200
m
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Site 141
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Site 141
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Site 141
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Site 141
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Data acquisition
40 mmdiameter
450 mm long
at site 141, 3 sensors 18 to 23 m below surface
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Outputs
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Task
Data files on researcher's office PC
Instruments in the field at four sites
Data transmitted periodically
via mobilephone system
Our taskRead data files as they arrive, add to existing data store.As called for, prepare graphs of the data and display on website for viewing by stakeholders
Sites ring in independently at varying times
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Data in
Simplest
103,2003,176,1300,196.27,-643.05,19.63,3125.1,22.36,14.34,13.11translated asStringID,year,dayofyear,hhhh,IPIA(Downslope),IPIB(Transverse),IPITemp,vwpFreq,vwpTemp,FieldStationTemp,BatteryVoltage
IPI = InPlace Inclinometer giving displacement - 2Dvwp = vibrating wire piezometer giving pore pressure
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Complications• Seventeen graphs• Four data sites
– allow for future sites– allow for instrument removal/damage/addition
• At three sites– three instruments measuring earth movement– two instruments measuring pore pressure– each instrument had its own set of (up to 26)
conversion constants
• two graph modes– selectable– emergency set
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Proving in realBASIC
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Solution
DAT fileon PC
Sensors in the field
convert to
Graph request received
get data
Draw graph
graph points(hourly, etc)
researchdatabaseof allreadings
convert to readings
Identify data
requiredgraph
data points
Select graph parameters
weekly, daily or 4-hourly downloads
readings hourly down to every5 minutes
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Solution
• Applications run periodically by the Windows scheduling system• The application checks for the existence of a DAT file specified
in its own configuration file• DAT file is processed if found• Can add extra sites to the system without modifying code
site141
application
configuration file for 141
DAT filesfor all sites
DATstore
141.DAT
153 newsite
153.DAT
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File manipulation
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Website
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Website: data from a station
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The website
UOW landslideresearchers
NPWS
road transport authorities
rail authorities
local council
other local andforeign researchers
Stakeholders
emergency services