INVENTORY OF TWIN TUNNEL CONDITION USING TERRESTRIAL LASER SCANNER (Case Study: Cisumdawu Twin Tunnel on STA 12+628 - 13+100) Satria Ramadhan 1), Adilfi Ramzia Virelqi2), Yackob Astor 3), dan Benny Mulyana Sukandar 4)
politeknik Negeri Bandung
Abstract
This Final Project discusses the use of a Terrestrial Laser Scanner (TLS) for
inventorying and monitoring the condition of the Cisumdawu Twin Tunnel with
a special focus on components such as Light Fire Extinguishers (APAR),
Evacuation Route Signs, Tunnel Geometrics, Emergency Lights, and Safety
Signs. TLS is a 3D scanning technology that utilizes laser light to produce a 3D
model of the physical environment that is observed as an object. The type of TLS
used is Stonex X70GO which is operated mobile (dynamically). Tunnel scanning
is carried out by walking along the left side of the tunnel followed by the right
side for each tunnel. Scanning was carried out 2 times, namely using a target
method and without a target to get the best results. TLS data is processed using
GoApp, GoPost, Cube 3D, Autodesk Recap Pro, Autodesk CAD software.
Obtained a 3D Model of the Cisumdawu Twin Tunnel which can display the
dimensions of the tunnel. There is a comparison of the tunnel dimensions in the
3D Model to the dimensions in the As Built Drawing. For the purposes of
inventorying tunnel components, qualitatively the resulting 3D model cannot
display very good visualization quality. Some components look dark and
distorted. However, quantitatively the 3D model can be used to calculate the
number of existing tunnel components. There are 6 Electric Panels, 6 APAR
units, 6 Emergency Telephones, 3 meter distance between lights, and 4 Safety
Signs in each tunnel. The results of this final project contribute in the form of
applying technology to create 3D tunnel models as the main medium for
condition surveys and inventory of tunnel components.
Keywords: terrestrial laser scanner, tunnel components, 3D Mode
