Métodos para determinar la conductividad hidráulica saturada y no saturada de los suelos
Bibliographic record
Abstract
La conductividad hidraulica saturada es una propiedad clave en la descripcion de los procesos de infiltracion y redistribucion de agua en el suelo. Esta puede ser determinada en el laboratorio y en el campo. En el laboratorio la determinacion de la conductividad hidraulica se realiza en muestras cilindricas no disturbadas, mediante el uso de un permeametro de carga constante o con un permeametro de carga variable. Debido a las limitaciones para obtener muestras no disturbadas representativas, ademas del relativo pequeno tamano de las mismas, asi como la variabilidad de las mediciones, es preferible realizar mediciones de campo. En el campo, hay dos condiciones para realizar las mediciones: por debajo del nivel freatico (condiciones saturadas), y condiciones no saturadas. En el presente trabajo se describen los metodos y equipos mas comunmente usados para determinar esta propiedad del suelo Los metodos descritos incluyen: el metodo del pozo, el piezometro, el infiltrometro de doble anillo, el metodo del pozo invertido, el permeametro de Guelph, el infiltrometro de tension y el infiltrometro de disco. Palabras clave: permeabilidad, flujo saturado, flujo no saturado, permeametro, infiltrometro Abstract The saturated hydraulic conductivity is a key soil property that controls the infiltration and redistribution processes of water in the soil. It can be determined either at the laboratory or on field conditions. At the laboratory the hydraulic conductivity can be determined on undisturbed core samples, using a constant head permeameter or with a falling head permeameter. However, it is preferable to carry out field measurements due to the difficulties to obtain representative undisturbed samples, the relative small size of the core samples, and the variability of the laboratory determinations, On the field, the measurements can be carried out either below the groundwater table (saturated conditions), or above the groundwater level (unsaturated conditions). The most common methods and equipments used for measuring the soil hydraulic conductivity are described in this work, including: the constant head permeameter, the falling head permeameter, the auger-hole method, the piezometer method, the double ring infiltrometer method, the Guelph permeameter, the tension infiltrometer, and the disc infiltrometer. Key words: permeability, saturated flow, unsaturated flow, permeameter, infiltrometer.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".