dsd-int 2016 building a 3d model of the subsurface on a local scale - hijma

Creating 2D/3D subsurface models

for local/regional use

Marc Hijma

Applied Geology and Geophysics

27 oktober 2016

• Easy to use tool to visualize large sets of subsurface data • Boreholes

iMOD – not only for groundwater related studies!

27 oktober 2016


• Cone penetration tests


27 oktober 2016



• 3D-voxel models


27 oktober 2016



• 3D-voxel models

GeoTOP – TNO-Geological Survey of The Netherlands


27 oktober 2016




• 3D-voxel models

• Shapefiles

• Ascii-grids

27 oktober 2016



• 3D-voxel models

• Shapefiles

• Ascii grids

• Easy to use tool to create 2D/3D models of the subsurface


27 oktober 2016



• 3D-voxel models

• Shapefiles

• Ascii grids

• Easy to use tool to create 2D/3D models of the subsurface

• Two examples • Stochastic subsurface scenario’s below Dutch dikes

• Complex geology below a new highway


Stochastic subsurface scenarios

3D model of the geology below a highway

Stochastic approach using iMOD

14 november 2016

iMOD: 2D sections along a dike.

Viewing all relevant subsurface information

Creating subsurface scenario’s

8 juni 2015

• Each scenario gets its own probabity of occurence

• Depth of each layer: modal, maximum, minimum

14 november 2016

Combined probability of failure

14 november 2016

Complex geology below a new highway

Tunnel: more seepage than expected

14 november 2016

Unexpectedly connected sand layers

14 november 2016

SAND

CLAY

CLAY

PEAT

SHORT CIRCUIT

14 november 2016

3D problem!

14 november 2016

dsd-int 2016 building a 3d model of the subsurface on a local scale - hijma

Software