Examples of Construction
of Landslide GIS
Japan Conservation Engineers
Landslide GIS to visualize sliding masses and
slipping surfaces as 3D models. This has eliminated the manual work of drawing cross sections and assuring their consistency.
Landslide GIS can also use aerial photographs
in landslide animations to reveal the extent of
devastation, an effective method to visualize
its effect on protected areas and on people. ;
This project, ongoing since 2000, involves the
development of a 3D GIS system to prevent
landslides and control erosion. Landslide GIS
stores and manages 3D surface and sub-sur-face data, facilitating landslide analysis, simulation of sliding movements, and arrangement
of prevention works. The system manages
records of landslide prevention and control
works, both as CAD drawings and construction pictures, which can be searched by type
of prevention works and by year, without
searching through piles of paper drafts.
A landslide area generally contains several
blocks of slipping surfaces. Landslide GIS can
generate the geological structure of an area
based on core samples from drilling surveys.
By virtually surveying at a selected point, it is
easy to produce drawings of cross sections
that visually explain a proposed prevention
work to the public. Although most existing
cross-sectional maps of geologic columns are
in 2D, MicroStationV8 can convert 2D data
into 3D data, making conversion much easier.
With GEOPAK Site, MicroStation also enables