Everything about B-OF01 Overflow Test (reference test)
id;activity_name;activity_type;activity_descriptor;breaching;animal;erosion;temporary;levee_survey;prolonged;start_date;end_date;date_length_day;date_length_hour;date_other;levee_stretch;location_x;location_y;location_z;location_descriptor;location_other;objectif_important;objectif_knowledge;pre_condition;act_des;monitoring_process;monitoring_reasoning;limits;during_activity;post_activity;activity_result;results_conc;knowledge_desc;ref_links;wrk_1;wrk_2;wrk_3;key_info
76;B-OF01 Overflow Test (reference test);Strength test;By generating overflow over a levee crest, using a custom built overflow generator, the strength of the levee cover against erosion and/or failure is evaluated. The B-OF01 test is performed on a visually good quality section in order to establish a reference for the other tests on Belgian parts of the HPP levee.;False;False;True;False;False;False;2020-10-30 00:00:00;2020-11-03 23:59:00;;21.0;;IV;51.34125;4.23881;11.2;Landward sdie of the levee.;"Lambert'72 coordinates: X=140944.8m; Y=225726.5m.";Establish reference measurements on Belgian side.;Establish hydraulic properties of overflow on real levee, assess the performance of the overflow generator device and observe cover layer erosion resistance (qualitative).;Levee slope in visually good conditions.;Overflow during 21:00 hours (performed in 19 blocks) with a typical discharge of 180 L/s.m over a width of 2 m.;- Overhead cameras (4) - Acoustic water height sensors - Electromagnetic current velocity sensors - Discharge sensor (EM or acoustic);"Description of the hydraulic conditions of the overflow. The setup is described in Vercruysse et al. (2022): ""Design and application of an overflow generator."" (Ref WL2022R20_047_1)";;During the test, it was observed that soil eroded slowly and exposed grass roots, without creation of any significant damage that would lead to imminent failure of the levee slope.;Slope surface shows signs of erosion and barren patches where vegetation is removed, but the clay cover layer is intact. No failure has occurred.;The overflow generator is able to generate a steady flow pattern over the levee crest. A levee cover in a good condition, 20 hours of overflow with a specific discharge of 180 l.(s.m) leads to some soil erosion and vegetation root exposure, but it does not lead to major or critical damage.;Factual data report + Annexes: https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/EvdAZOO-zylAqEWS8-SEiC4BQ5xCAuFXklsysJXnkcVYaQ?e=XDeXq8;An integration report will be added later (February 2023) as knowledge document.;under development;True;False;False;


All DATA concerning B-OF01 Overflow Test (reference test)
data_type;data_descripion;date_date;data_find;data_media;data_media_find
Factual data report;Factual data report describing the tests on the Belgian part of the HPP levee.;;https://stowanl-my.sharepoint.com/:w:/g/personal/llhpp_stowa_nl/EVpQIrpc_n1MhDLPmEL2Qh0BgEH8RdDV7ncL0iksYdxubw?e=fvXzeo;;
Monitoring data;"- Hydraulic timeseries
- Photographs
- ... (variable per test)";;https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/EoZX1na1wQ9Jkt6nJSUFK-ABSJiJnm7TFAJ2fUsDrpR6ow?e=s7jRxO;;


All EQUIPMENTS concerning B-OF01 Overflow Test (reference test)
equip_type;equip_usage
"Overflow generator.
";"The setup is described in Vercruysse et al. (2022): ""Design and application of an overflow generator."" (Ref WL2022R20_047_1)"


All SENSORS concerning B-OF01 Overflow Test (reference test)
No sensors added