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geoscene3d:hydro_calculations:drawdowntheiscalculation [2020/02/24 19:26] – created rebecca130301_gmail.com | geoscene3d:hydro_calculations:drawdowntheiscalculation [2023/09/27 13:52] (current) – external edit 127.0.0.1 | ||
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This tool can be used for estimating draw down calculations e.g. when evaluating extraction permits especially when desiring to establish a new well. In addition, the module can be used as a screening tool within a wide range of groundwater-related tasks, including drinking water, industrial irrigation, geotechnics, | This tool can be used for estimating draw down calculations e.g. when evaluating extraction permits especially when desiring to establish a new well. In addition, the module can be used as a screening tool within a wide range of groundwater-related tasks, including drinking water, industrial irrigation, geotechnics, | ||
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==== Requirements ==== | ==== Requirements ==== | ||
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**The project set up** \\ | **The project set up** \\ | ||
It is important that the depth is in meter in the project set up. | It is important that the depth is in meter in the project set up. | ||
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- | === Module === | ||
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=== Data === | === Data === | ||
As a minimum you need a potentiometric map added to GeoScene3D as a 2D grid and a pump position. If you already have a potentiometric map, use the “Add data wizard” to add the grid. If not, you can easily interpolate a potentiometric map based on the water table in a well database. Right-click on the well database in the “Object Manager” and go to “Interpolate” and follow the wizard to interpolate a potentiometric map. You can see how to add a pump position in step 1.\\ | As a minimum you need a potentiometric map added to GeoScene3D as a 2D grid and a pump position. If you already have a potentiometric map, use the “Add data wizard” to add the grid. If not, you can easily interpolate a potentiometric map based on the water table in a well database. Right-click on the well database in the “Object Manager” and go to “Interpolate” and follow the wizard to interpolate a potentiometric map. You can see how to add a pump position in step 1.\\ | ||
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==== Step 1. Pump position ==== | ==== Step 1. Pump position ==== | ||
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==== Step 2. The calculation ==== | ==== Step 2. The calculation ==== | ||
- | 1. Open the menu “Themes” and click the “Drawdown Theis Calculation” to open the calculation page.\\ | + | 1. Open the menu “Hydro” and click the “Drawdown Theis Calculation” to open the calculation page.\\ |
- | {{:tutorials:themecalc:01e3fd0d1d0ac15de85e8924b9cf131f.png}}\\ | + | {{:geoscene3d:hydro_calculations:5e54c672d4b1ef94dbc009d8d83d1dfa.png}}\\ |
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2. Select the different opportunities for pump parameters and output. You can see an explanation of all the functions in the table below.\\ | 2. Select the different opportunities for pump parameters and output. You can see an explanation of all the functions in the table below.\\ | ||
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|Output Object and Grid|Choose to either generate a new grid file (mark the “New Surface Object” and choose the output directory) or to recalculate and replace an existing surface object (choose the “Replace Existing Surface Object”). If you use the last opportunity please be careful not to overwrite a wrong grid file, as this can not be undone. The file can be chosen in the drop-down menu.| | |Output Object and Grid|Choose to either generate a new grid file (mark the “New Surface Object” and choose the output directory) or to recalculate and replace an existing surface object (choose the “Replace Existing Surface Object”). If you use the last opportunity please be careful not to overwrite a wrong grid file, as this can not be undone. The file can be chosen in the drop-down menu.| | ||
|Output Map Layer|Add the new or replaced layer to a map. Choose the map in the drop-down menu. You can also choose the color scale. This can also later be changed in the map window.| | |Output Map Layer|Add the new or replaced layer to a map. Choose the map in the drop-down menu. You can also choose the color scale. This can also later be changed in the map window.| | ||
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==== Step 3A. Results for 1 well position ==== | ==== Step 3A. Results for 1 well position ==== | ||
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==== Step 3B. Results for 2 well positions ==== | ==== Step 3B. Results for 2 well positions ==== | ||
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Green line: Pumping time: 672 hours.\\ | Green line: Pumping time: 672 hours.\\ | ||
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==== Step 4. Results in the map window ==== | ==== Step 4. Results in the map window ==== | ||
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1. Below you can see an example of a potentiometric map in the map window.\\ | 1. Below you can see an example of a potentiometric map in the map window.\\ | ||
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==== Step 5. Differential map ==== | ==== Step 5. Differential map ==== |