Part 1: Utilities Mapping Implication for Major Underground Development Construction

The accuracy of subsurface utility as-built and alignment drawings has long been a persistent issue within our construction industry. Currently, extensive trial hole works are necessary to map subsurface utilities for feasibility studies and fact-finding purposes. However, these trial holes are costly to excavate and only provide information about the specific location where they are dug.

Could we consider an alternative approach? The focus here is on adapting Subsurface Utility Mapping (SUM) with non- destructive geophysical methods such as Ground Penetrating Radar (GPR) to generate Geo-located Utilities Drawings (GUD).

This presentation will be delivered by HSC Pipeline Engineering (HSC). As a utility contractor, HSC benefits from the ability to perform extensive GPR scans and subsequently validate these scans during the pipelaying process. To-date, HSC has conducted GPR scans covering over 1.6 million m2 of road and turf around Singapore.

This vast experience has allowed HSC to develop a strong understanding and expertise in utilising GPR technologies within Singapore's ground conditions. Being both a contractor and an end-user of GPR, this talk will cover the practical experiences, highlighting the limitations and significant benefits that GPR brings to the construction industry.

Speaker 1 : Mr. Shane Shi

Mr. Shane Shi (Managing Director), from HSC Pipeline Engineering Pte Ltd. HSC is a local Medium Enterprise with 30 years of expertise on underground utility projects. Shane leads various digitalisation initiatives within HSC, encompassing departments such as Human Resources, Procurement, Finance, Safety and Operations. Through the use of new and available technology, Shane leads a team in implementing Subsurface Utilities Mapping to enhance project productivity and efficiency, delivering value-added solutions to HSC's clientele

Speaker 2: Mr. Shawn Seah

Mr. Shawn Seah (Deputy General Manager), from HSC Pipeline Engineering Pte Ltd. Shawn has over 20 years’ experiences in underground infrastructure development including metro lines, cable tunnels, caverns and utilities. The involvement in various roles within the underground works industry have provided an understanding of its dynamics and complexities. Currently, Shawn is dedicated to the advancement of underground detection and mapping technologies, with a keen focus on driving safety, efficiency, and sustainability initiatives.


Part 2: The Rapid 3D LiDaR Technology for Tunnel Surveying, Mapping & Inspection

Light Detection and Ranging (LiDAR) technology is a cutting- edge method used for detailed surveying and mapping of tunnel environments. By emitting laser pulses and measuring the time it takes for them to return after hitting surfaces, LiDAR generates precise, three-dimensional models of tunnel interiors. This technology is crucial for various applications in tunnel construction, maintenance, and safety monitoring. LiDAR technology especially terrestrial laser scanning can be used to identify and track deformations, cracks, and subsidence over time. LiDAR surveying ensures the tunnel is built according to design specifications by detecting deviations early. LiDAR can provide accurate records of tunnel conditions for reference in maintenance and future projects. The presentation aims to show the LIDAR scanning technology using various LiDAR equipment and how to use LiDAR during tunnel construction, maintenance, and safety monitoring.

Speaker:
Gs. Anomaht Aitin currently a Director of AXIS Gemilang Sdn. Bhd. - Geospatialist and LiDAR Consultant with more than 23 years’ experience in Geospatial Industry. He is a certified LiDAR trainer and for the last 12 years, Anomaht and team has been mainly engaged in LiDAR surveying and mapping for various projects and client’s including MRT tunnel scanning using terrestrial laser scanner (TLS) and menora tunnel scanning using mobile laser scanner (MLS).