TY - JOUR
T1 - Measurement of sewer sediments with acoustic technology
T2 - From laboratory to field experiments
AU - Lepot, Mathieu
AU - Pouzol, Tanguy
AU - Aldea Borruel, Xavier
AU - Suner, David
AU - Bertrand-Krajewski, Jean Luc
PY - 2016
Y1 - 2016
N2 - Monitoring sewer sediments is necessary to better understand sedimentation and erosion processes. Sonar is one of the available techniques to proceed to sewer sediment measurements. Extraction of numerical data, implementation of a new algorithm to identify the water-sediment interface, laboratory and field experiments have been done to evaluate the device, to quantify uncertainties and to test the sonar under various conditions. Results demonstrate that: 1) uncertainties in repeatability are less than 4%, 2) the sonar delivers accurate results under various conditions (small to large sewers and grit chambers), and 3) in situ measurements are affected by uncertainties, mainly due to the fact that the sensor is not in a fixed position but is floating on the free surface in the sewer. This device is useful and accurate for semi-automatic measurement but further research and improvements should be done to better know the position of the device in the section.
AB - Monitoring sewer sediments is necessary to better understand sedimentation and erosion processes. Sonar is one of the available techniques to proceed to sewer sediment measurements. Extraction of numerical data, implementation of a new algorithm to identify the water-sediment interface, laboratory and field experiments have been done to evaluate the device, to quantify uncertainties and to test the sonar under various conditions. Results demonstrate that: 1) uncertainties in repeatability are less than 4%, 2) the sonar delivers accurate results under various conditions (small to large sewers and grit chambers), and 3) in situ measurements are affected by uncertainties, mainly due to the fact that the sensor is not in a fixed position but is floating on the free surface in the sewer. This device is useful and accurate for semi-automatic measurement but further research and improvements should be done to better know the position of the device in the section.
KW - deposits
KW - Monitoring
KW - sonar
KW - ultrasonic measurement
KW - uncertainties
UR - http://www.scopus.com/inward/record.url?scp=84962503083&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:7e98f161-5633-4755-99b9-5444d28d162f
U2 - 10.1080/1573062X.2016.1148181
DO - 10.1080/1573062X.2016.1148181
M3 - Article
AN - SCOPUS:84962503083
SN - 1573-062X
VL - 14
SP - 369
EP - 377
JO - Urban Water Journal
JF - Urban Water Journal
IS - 4
ER -