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Events / Activities
 

 
Technical Seminar: The Time Lapse Ground Penetrating Radar as Monitoring Measures for Deep Excavation Works
 


Date, time & venue

2019-03-08;18:30-20:00;Chan Yat Mei Sophie Room – 9/F

 

Co-organised by: HKIE-AMC, EVD & CAD




Technical Seminar: The Time Lapse Ground Penetrating Radar as Monitoring Measures for Deep Excavation Works


 


Date, Assembly Time & Place


8 March 2019 (Friday), 6:30-8 pm, HKIE Chan Yat Mei Sophie Room


 


Programme Highlight


This presentation report the finding from a feasibility study on the use of Time Lapse Ground Penetrating Radar (TLGPR) to be a monitoring measures for deep excavation works. The TLGPR aims to quantify the difference between two radargram collected along boundary of construction site at different time. It provides an information on the degree of change, or even formation of void, in the soil mass being retained by lateral support. Non-signal processed data (256 samples per trace) were input to an in-house LabView programme for Wavelet Transform (WT) to determine the peak frequency of A-scan at particular time-depth. By comparing the differences in peak frequency at different time, changes in soil mass identified.


 


Result shows that the TLGPR able to quantify the degree of change between two radargram. Moreover, due to the TLGPR is comparing the difference in frequency domain, it is capable to identify differences which are not visually notable from signal processed image.


 


Speaker


Ir Kenneth C W Pak, Senior Lecturer of Department of Construction, Hong Kong Institute of Vocational Education. Currently he is the Programme Leader of Higher Diploma in Civil Engineering and Programme Leader of several training programmes related to construction material testing. He is a PhD candidate of the RMIT University, Australia. His main research topic related to Non-destructive Tests, especially Time Lapse Ground Penetrating Radar (GPR) for geophysical application.


 


 


Registration & Enquiries


The seminar is free of charge with maximum of participants of 80.  No prior registration is required. Please come for walk-in registration on 8 March 2019 on/before 6:30 pm . For details, please visit AMC website (http://www.amc.hkie.org.hk).  For enquiries, please contact Mr. Benjamin Lam at  bencamay1119@gmail.com .  Attendance certificate will be awarded after seminar.








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