3D modelling at the Geological Survey of Finland (GTK)

Transcription

1 3D modelling at the Geological Survey of Finland (GTK) E Laine, A Pasanen & 3D team at GTK

2 Contents 1. GTK Geological Survey of Finland 2. GTK s 3D geological model storage 3. Examples 4. Future: CEM and fracture simulation

3 GTK s organisation 2014 Ministry of Employment and the Economy Board Director s Staff Director General Management Group Southern Finland Office Western Finland Office Corporate Services Eastern Finland Office Northern Finland Office Land Use and Environment Bedrock Geology and Resources Research Laboratory Land Use and Environment Energy and Resources Financial Administration Human Resources General Administration IT Services Technical Services Bedrock Geology and Resources Land Use and Environment Mineral Processing Bedrock Geology and Resources Land Use and Environment Information Services Information Services Information Services 10 March

4 GTK s staff on 1 January 2014 Permanent staff Southern Finland 237 Western Finland 35 Eastern Finland 189 Northern Finland Temporary staff 24 Total 584 Western Finland Office Kokkola Rovaniemi Northern Finland Office Eastern Finland Office Kuopio Outokumpu Loppi Espoo Southern Finland Office 10 March

5 GTK s regional priorities and profiles Regional offices have close links to regional planning and the business sector. Research activities and services are defined on the basis of regional development plans and business priorities. Our major aims are to develop and maintain an internationally competitive business environment and to promote employment in regional counties. Land use and energy sectors Kokkola Loppi Espoo Exploration and mining Rovaniemi Kuopio Environment and extractive industry Outokumpu Urban geology and international projects 10 March

6 GTK national centre for geoscience data Data acquisition - Information management - Web-based delivery Mining companies Local government Universities Other sources Geodata from External sources GTK s GeoKernel Information services Society Business and consultants The science community GTK data collection Demand-driven surveying programmes 10 March

7 Introduction 3D-modelling in Finland has been traditionally related to ore modelling and evaluation New applications have been introduced in recent years Eg. Regional, local and site scale 3D-models, Nuclear waste site models at Olkiluoto Computerized 3D ore modelling has been done since

8 Main geological units in Finland (Very) brief stratigraphy of Finland Quaternary Precambrian crystalline bedrock mainly older than 1.8 Ga Harri Kutvonen/ GTK Gap for 1.5 to 1.8 Ga

9 Applications Main research themes that use 3D-modelling in GTK are: Ore exploration Environmental investigations Environmental studies in mining sites Groundwater Flow modelling and (reactive) transport modelling Urban geology

10 3D geological model storage at GTK

11 Regional 3D modeling targets & Olkiluoto nuclear waste site (under construction)

12 An example from central Lapland 3D model of the Kittilä terrane and surrounding geological blocks used in the modeling. View from the northwest and Kittilä terrane gravity model from the northeast. Modeling profiles are presented in both images. Tero Niiranen, Ilkka Lahti and Vesa Nykänen, D model of the Kittilä terrane and adjacent structures. In: 2014 Central Lapland Greenstone Belt 3D modeling project final report edited by Tero Niiranen, Ilkka Lahti, Vesa Nykänen and Tuomo Karinen. Geologian tutkimuskeskus, Tutkimusraportti 209 Geological Survey of Finland, Report of Investigation

13 An example from Pyhäsalmi-Vihanti region By Jouni Luukas 2013, a 3D model built for the ProMine project

14 An example from the Outokumpu area Laine, E. (ed.) D modeling of polydeformed and metamorphosed rocks: the old Outokumpu Cu-Co-Zn mine area as a case study. Geological Survey of Finland. Report of Investigation 195, 77 pages, 66 figures and 1 table

15 Applications Groundwater Patamäki, Kokkola, Western Finland The Patamäki 3D geological model of Patamäki groundwater area (red = bedrock, light brown = moraine, dark green = gravel, lila = silt, light green = sand, darker light green = fine sand) (Okkonen et al., 2011)

16 Hydraulic conductivity m/s Applications Groundwater Patamäki: hydraulic conductivity Hydraulic conductivity in the Patamäki area (Okkonen et al., 2011)

17 Applications Groundwater Patamäki: accident scenarios (Okkonen et al. 2011)

18 Bedrock and Quaternary fractured sediments Bedrock bedrock Applications Mine environment/ groundwater Luikonlahti Mine, Kaavi, Eastern Finland (Pasanen et al, 2012 in prep.)

19 Applications Groundwater Pursiala, Mikkeli, Eastern Finland (Hyvönen et al. Top TopTop of Current of Top medium of medium of medium Bedrock coarse ground and gravel Top and fine gravel, surface of fine and sand, till glaciofluvial coarse sand, glaciofluvial sand, glaciofluvialglaciofluvial glaciolacustrine Pers. Comm)

20 Applications Urban geology Suurpelto, Espoo The thickness of fine sediments in the Suurpelto area and geological cross sections along the marked lines (Ojala et al. 2007)

21 Future Regional 3D database of selected targets? More numerical 3D modeling using CEM Development of 3D modeling practices

22 A work flow for high performace computing Iterative process in order to build a 3D CEM grid Mesh tools Geological models tranformed to grids User interface!! for CSC computers Geostatistical simulation Forward and inverse modeling ESY Num3D/Project Team

23 Fracture simulations Geologically realistic fracture properties and their distributions Fracture simulation Transformation into a FEM grid in order to solve fracture related physical and chemical processes in a rock mass ESY Num3D/Project Team