TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

The mineral clogging mechanism. Due to the drag force of the water at the interface between the soil and a drain pipe, soil particles may be carried into the pipe via its slots. This process can never be prevented completely, but can be counter-acted by installing an envelope material, often a geotextile, around the drain. Generally, two types of mineral clogging can be detected which are referred to as primary and secondary mineral clogging. Primary clogging is a consequence of the sudden drastic changes in the soil/water boundary conditions, caused by the installation of the subsurface drainage system, and the resulting water flow, including particle transport due to the high hydraulic gradients, towards the newly installed pipes. Secondary clogging is defined as particle transport into filters and/or pipes, in the long term;...  1, record 1, English, - primary%20mineral%20clogging

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

colmatage: Accumulation des fines particules du sol entraînées par l'eau dans les pores d'un matériau drainant, naturel ou artificiel, le rendant progressivement incapable d'assurer sa fonction.  2, record 1, French, - colmatage%20min%C3%A9ral%20primaire

Record number: 1, Textual support number: 2 OBS

D'une manière générale, la stricte application des critères de filtration définis par les divers organismes nationaux prend en compte les effets à long terme du colmatage minéral et donc limite les risques de non-fonctionnement des réseaux de drainage.  3, record 1, French, - colmatage%20min%C3%A9ral%20primaire

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

The mineral clogging mechanism. Due to the drag force of the water at the interface between the soil and a drain pipe, soil particles may be carried into the pipe via its slots. This process can never be prevented completely, but can be counter-acted by installing an envelope material, often geotextile, around the drain. Generally, two types of mineral clogging can be detected which are referred to as primary and secondary mineral clogging. Primary clogging is a consequence of the sudden drastic changes in the soil/water boundary conditions, caused by the installation of the subsurface drainage system, and the resulting water flow, including particle transport due to the high hydraulic gradients, towards the newly installed pipes. Secondary clogging is defined as particle transport into filters and/or pipes, in the long term;...  1, record 2, English, - secondary%20mineral%20clogging

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

colmatage: Accumulation des fines particules du sol entraînées par l'eau dans les pores d'un matériau drainant, naturel ou artificiel, le rendant progressivement incapable d'assurer sa fonction.  2, record 2, French, - colmatage%20min%C3%A9ral%20secondaire

Record number: 2, Textual support number: 2 OBS

D'une manière générale, la stricte application des critères de filtration définis par les divers organismes nationaux prend en compte les effets à long terme du colmatage minéral et donc limite les risques de non-fonctionnement des réseaux de drainage.  3, record 2, French, - colmatage%20min%C3%A9ral%20secondaire

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Hydrological Data Collection. In order to model the hydrology of a stream study segment over a range of flow rates, it is necessary to collect specific data defining the hydraulic boundary conditions. Boundary conditions define the target hydraulic simulation output, i. e. the desired flow rate, velocity and water surface elevation at the up-stream and down-stream ends of the segment. Hydraulic boundary are typically defined by flow rate, velocity magnitude and direction and/or water surface elevation. Boundary conditions, for instream flow analysis, are usually defined at the up-stream or down-stream boundaries of the study segment. In addition to the boundary conditions it is important to collect both quantitative and qualitative hydraulic information within the boundaries of the study segment. This additional data is used for model calibration and verification.  1, record 3, English, - hydraulic%20boundary

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Generally, two types of mineral clogging can be detected which are referred to as primary and secondary clogging. Primary clogging is a consequence of the sudden drastic changes in the soil/water boundary conditions, caused by the installation of the subsurface drainage system, and the resulting water flow, including particle transport due to the high hydraulic gradients, towards the newly installed pipe. Secondary clogging is defined as a particle transport into filters and/or pipes, in the long term;...  1, record 4, English, - mineral%20clogging

Record number: 4, Textual support number: 1 OBS

Clogging : The movement by mechanical action or hydraulic flow of soil particles into the voids of a fabric and retention therein, thereby reducing the hydraulic conductivity of a geotextile.  2, record 4, English, - mineral%20clogging

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Colmatage minéral. Il existe deux risques majeurs de colmatage : le "clogging", qui est provoqué par la pénétration des particules à l'intérieur du géotextile (...) et donc réduit la perméabilité de ce dernier. (...) le "blocking", qui est l'obturation des canaux au point de passage du fluide dans le géotextile. (...) la stricte application des critères de filtration définis par les divers organismes nationaux prend en compte les effets à long terme du colmatage minéral et donc limite les risques de non-fonctionnement des réseaux de drainage.  1, record 4, French, - colmatage%20min%C3%A9ral

Record number: 4, Textual support number: 1 OBS

L'eau qui circule est chargée de particules solides en suspension, celles-ci s'accumulent sur le filtre ou au sein du filtre en réduisant progressivement la perméabilité. Le débit diminue, il y a colmatage. (...) Les risques de colmatage du filtre et du drain dépendent de la quantité de ces particules fines quittant le sol et qui est elle-même déterminée par le choix du filtre. Pour éviter le colmatage du filtre, on pourrait choisir un géotextile dont la texture serait plus serrée que le diamètre des particules fines, mais elle serait quasi imperméable et arrêterait même l'eau.  2, record 4, French, - colmatage%20min%C3%A9ral

Record 4,  Textual support,  Spanish