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I'm trying to find a suitable work around for modelling flow pathways through abandoned mineworkings, some of which are above the water table (dry) and therefore subject to non-darcian flows. My data, however, is a blanket of worked seams and lacking any tunnel or shaft data (the hope was to use CLN utilising this network data). I am hoping someone may have some experience with battling similar issues? The data is all vector data used in ArcMap and I've noticed that some files will transfer into MODFLOW easily (such as DTMs), yet others like TINS do not. During the initial process, I have a few questions I hope someone with more experience may be able to answer. 1) How to site the workings at their respective heights using Arcmap shape files and TINs. (MODFLOW doesn't seem to like TINS but does recognise them). The shape files are divided by 20-50 meter barriers of solid seam (walls of major blocks), would this kind of shape file transfer when placed into MODFLOW easily distinguish between Open channel flow for the known workings, and a general value for the aquitard wall materials. 2) Once the workings are in place at their respective depths, is there a way within GMS to allow all surrounding lithologies to be generalised (i say this as the local geology is cyclotherms and is made more complex by the inclusion of coal mineworkings). I've included the 3D geology image below, exhibiting the space between the coloured seam workings. 3) Would the easiest way to produce connecting shafts between the various seams be by using wells? Thanks in advance, M
Hi Guys, firstly I'm quite new to the program (MODFLOW) and I am looking to develop a model of abandoned coal mine workings to potentially store flood waters within a city. From working through the tutorials it would appear that MODFLOW-USG Connected Linear Network (CLN) is the appropriate technique (but would appreciate clarification on this). Would anyone have any experience with modeling non-darcian flow networks (Eg Karst or man-made voids) who may be able to provide some valuable insight into the process? Thanks in advance M
Dear Members, I have never used modflow-usg before. I am wondering if MT3DMS is compatible with the Modflow-USG "Ugrid" flow model and the CLN well package? In other words, if I create a flow model using the UGrid in Modflow-USG and wells using the CLN package, would I be able to simulate solute transport using MT3DMS in GMS? I look forward to hearing from you. Cheers Mahmoud