Underground Singapore is a Conference organised by the Tunnelling and Underground Construction Society (Singapore) once every two years. This is the nineth edition in the esries of UGS conferences following the successful launch in 2001. The purpose of the Conference is to provide a forum for discussion of contemporary issues relevant to the design and construction of underground works in and around Singapore. The aim is for personnel from different sectors of the industry such as contractors, consultants, owners, equipment manufacturers, material suppliers and researchers to gather together and share their knowledge and experiences with the wider tunnelling and underground construction community. The conference proceedings serve as a useful reference score. In this edition, over 40 technical papers have been accepted for publication. These papers highlight the current challenges faced in bored tunnelling and deep excavations as well as the lessons learnt and new methods/technologies adopted.


Sponsored by


                                    Conference Sponsors

Thumbdrive Sponsor

                                                                    Table-Top Exhibitors

Lanyard Sponsor


Organising Committee:
Dr. Jeyatharan KumarasamyLand Transport Authority
Mr Leslie PakianathanChangi Airport Group (S) Pte Ltd
Dr Oskar SiglGeoconsult Asia Singapore Pte Ltd
Ms. Jee Yiyng AECOM Singapore Pte Ltd


Technical Committee:
Prof Chu JianNanyang Technological University
Dr Goh Kok HunLand Transport Authority
Prof Leung Chun FaiNational University of Singapore
Mr Massimo MarottaLand Transport Authority
Mr Matthew MinuzzoLeighton Contractors (Asia) Limited
Mr Nick OsborneMott MacDonald
Mr Nick ShirlawGolder Associates (HK) Limited
Mr Ruben DuhmeHerrenknecht Asia Pte Ltd
Mr Senthilnath GT Geoconsult Asia Singapore Pte Ltd
Dr Wen Dazhi Changi Airport Group (S) Pte Ltd 

The Conference will be held at:


Parkroyal on Beach Road

7500 Beach Road

Singapore 199591


Nearest MRT Station: Nicholl Highway Station (5 - 8 mins walk from Exit A)



Hotel Accommodation

Special room rates at the Conference venue (Parkroyal on Beach Road) is available at SG$270++ inclusive of 1 breakfast and WIFI. 


If interested, please contact the Secretariat for more details.


Map Extracted from Streetdirectory.com

The papers will be presented under the following technical sessions:
27th September 2018

Welcome Speech (09:00-09:15)
Dr Jeyatharan Kumarasamy
Chairman, Underground Singapore 2018 and TUCSS President

Conference Opening Speech
Prof Yong Kwet Yew
Professor of Civil Engineering and Senior Vice President (Campus Infrastructure), NUS
Chairman, International Panel of Advisors, LTA

Session 1-1: Large Tunnels and Innovations in TBM Technology (09:15-10:30)
Session Chair: Mr Leslie Pakianathan, Project Director, Changi Airport Group

1-1-1 Linkway Construction Underneath Existing MRT Tunnels by Open Faced Rectangular Shield for Marina Bay Station
K. Hashida, T. Watanabe*, H. Tada, T.S. Chua, M. Lew, R.S. Nair

1-1-2 Variable Density TBMs – International Experiences and Applications
H.W. Ng, R. Duhme*, M. Straesser

1-1-3 Successful use of a Mega TBM in an urban environment - Waterview Connection
T.J. Ireland*, S.F. Chau, S. Eratne

1-1-4 Innovative and State of the ART TBM technology for upcoming Singapore Tunnel Projects
A. Raedle*, J.D. Brabant*, A. Myint

Tea Break (10:30-11:00)
Session 1-2: Tunnelling Through Challenging Ground Conditions (11:00-12:30)
Session Chair: Mr Nick Shirlaw, Senior Consultant, Golder Associates (HK) Limited

1-2-1 Ground Freezing for the Design and Construction of SCL Tunnels underneath Marina Bay Station, Singapore
T.S. Chua, M. Lew*, K. Hashida, H. Tada*, S. Takeda, S. Marican, R.S. Nair

1-2-2 Use of High Density Slurry for Shallow Tunnelling in Thomson East Coast Line
H. Bernard, M.K. Lau, M. Senthilkumar, Y.S. Sze*, M. Marotta, G T. Senthilnath

1-2-3 Overcoming Challenges in Tunnelling through Varying Rock Conditions in Singapore
M.M. Sahabdeen*, C.N. Ow

1-2-4 Large Dimension Two-Arched SCL Tunnel Design And Construction In Mixed Ground Condition
A. Yang*, A.E. Alijono, N.H. Nick, K. Elod, S.E. Jeon, S. Kwon, L.P. Tan, C.M. Chua, J. Oh

1-2-5 A Study of TBM Borability under Marine Clay with Cementitious Ground Improvement
K. Kameyama*, N. Murakawa, J. Nithiananthan

Lunch (12:30-13:30)
Session 1-3: Design of Tunnel Lining (13:30-15:00)
Session Chair: Mr Nick Osborne, Divisional Director, Mott MacDonald

1-3-1 Innovation in Bored Tunnel Segmental Lining Design in Singapore – Steel Fiber Reinforced Concrete (SFRC)
M. McGowan, S. L. Suhaendi*, P. Fok, R. Venkta

1-3-2 Design consideration and Application of Steel Fiber Reinforced Concrete (SFRC) in Singapore MRT Tunnels
X. Wei*, T. Su, K.H. Goh

1-3-3 Design of Bored Tunnel in Deep Rock Mass for Urban Area
Y.Z. Lee*, C.W. Leong

1-3-4 Challenges and Design Strategies of Bored Tunnels in Consolidating Soft Clays under Future Surcharge
Y.C. Liew*, Gerardo. P, C. Setjadiningrat, N. Mace, C. Veeresh

1-3-5 State Assessment of Underground Infrastructure
F. Amberg*, A. Ackermann, F. Modetta, O. Schneider

Tea Break (15:00-15:30)
Session 1-4: Geotechnical Investigations (15:30-17:00)
Session Chair: Prof Leung Chun Fai, Professor of Civil Engineering, NUS

1-4-1 Drained strength of Residual Soils in Bukit Timah Granite
K.S. Wong*, P.L. Teo, P. Teo, B. Lung

1-4-2 A Review of the Variability of the Strength and Abrasivity of the Rocks of the Jurong Group and Tebak Formation

J.N. Shirlaw*, L.J. Pakianathan, J. Kumarasamy

1-4-3 Planning and Execution of Horizontal Directional Coring Method for Future Tunnelling Works
C. Veeresh*, F. Mahony, K.H. Goh, J.G. Cai

1-4-4 Triple-Arched Mined Tunnels. Comparison of Geological Models during the Detail Design and the Face Mapping during Construction
M. Charisi*, A. Green

1-4-5 Innovative Automatic Road Monitoring System (ARMS) for Settlement Monitoring of an Expressway Road Surface
C.H. See*, D.K.W. Chow, K.S. Ho

*The presenter for the paper.
The above programme is subject to change (revised as of 31 August 2018)

28th September 2018

Session 2-1: Tunnelling and Lessons Learnt (09:00-10:30)
Session Chair: Dr Oskar Sigl, Managing Director, Geoconsult Asia Singapore

2-1-1 Large Diameter Pipe Roof Tunnel Excavation
F. S. Badurdeen, E. H. Oguz*

2-1-2 Tunnelling in Bukit Timah Granite Formation in Contract T206 of Thomson East Coast Line of Singapore
A. Jadhav*

2-1-3 Design of Temporary Embedded Retaining Walls for Gardens by the Bay Station
S.S. Soh*, J. Pang, J. Shen, Y. Yoshida, S. Chandrasegaran, S.T. Chong

2-1-4 Lessons Learnt in Tunnelling in Contract C929a of Downtown Line 3, Singapore
C.N. Ow, R. Nair, M. Shelke*, A. Jadhav

2-1-5 Construction of a 170m Long Cripple Sided Tunnel Using Variable Geometry Hydraulic Formwork in DTL 3, C927
M. Mohiadeen*, M. Marotta

Tea Break (10:30-11:00)
Session 2-2: Tunnelling Key Performance Indicators (11:00-12:30)
Session Chair: Prof Markus Thewes, Head of the Institute for Construction Technology, Tunnelling and Construction Management, Ruhr-University Bochum, Germany

2-2-1 Excavation Management of Slurry TBMs – Long Term Operational Accuracy Evaluation
R. Duhme*, E. Kleine

2-2-2 Theory and Application of Excavation Management System for Slurry TBM in Singapore
T.C. Yee*, M. Marotta, C.N. Ow

2-2-3 Excavation Management System for Slurry TBM in Thomson East Coast Line: Practical Applications and Case Studies
A. Catalan, M.K. Dinesh*, S.A. Nugraha, S. Lau, D. Lau

2-2-4 Ground Improvement for Bored Tunnel in Reclaimed Land
Y. Yoshida*, N. Janagan, S.S. Soh

2-2-5 Deep Excavations with Ground Improvement – A Study Using Statistics and Back Analysis from a Monitored Excavation
G.A. Pittaro*, G. Murphy

Lunch (12:30-13:30)
Session 2-3: Deep Excavation Challenges (13:30-15:00)
Session Chair: Dr Goh Kok Hun, Director, Civil Design & Land, Land Transport Authority

2-3-1 Design and Construction of a Three Sided ERSS Wall for Launch Shaft
E.K.H. Lim*, I. Yogarajah, T.G. Ng, S.H. Lim, K. Uchida

2-3-2 Impact of Construction Issues on the initial Geotechnical Design Intent for an Underground Multilevel Rail Depot
W.T. Lai*, Q.Y. Ye, C. Veeresh

2-3-3 Settlements of Soils of Bukit Timah Granite Formation due to Underdrainage during Deep Excavation
V. Sanathanan*, J. Kumarasamy, M. Ruddock, B.G. Teoh

2-3-4 Open Cut Excavation in Singapore – Site Investigations and Design
M. Angeles*, M. McGowan

Tea Break (15:00-15:30)
Session 2-4: Tunnelling and Excavation Effects on Adjacent Buildings and Structures (15:30-17:00)
Session Chair: Ms Jee Yi Yng, Executive Director, AECOM Singapore Pte Ltd

2-4-1 Simplified Procedure for Assessing Effect of Over-Crossing TBMs on Existing Tunnels
G T. Senthilnath*

2-4-2 T212 - Upper Thomson Station & Associated Tunnels (Undercrossing existing live CCL tunnels)
S.Q. Lim*, S.J. Chen, M. Marotta, K.S. Ho

2-4-3 Numerical Modelling of NATM and Underpinning Works underneath an Existing Underground MRT Station
N.H. Osborne, S. Ashokvardhan, C.K. Toh, A. Yang, C.L. Liew*

2-4-4 Impact Assessment of the Construction of MRT Cut and Cover Tunnel on Existing DTSS Tunnel
W.T. Lai*, F.X. Liu, Q.Y. Ye, C. Veeresh

*The presenter for the paper.
The above programme is subject to change (revised as of 31 August 2018)

Registration Fees for the UGS2018 is as follows:



Early Bird^ (on or before 15th August 2018)

Author# (limited to 1 only per paper)







Standard Rate (16th August to 13th September 2018)







^To enjoy Early bird registration fees, payment must be received on or before 15th August 2018, otherwise the standard rates applies.

*Corporate member may nominate up to 2 staff at member's rate, subsequent registrations will be under non-member's rate.

*** All registrations are on a first-come-first-serve basis. We regret that there will be no refund for withdrawals/cancellation. Replacement of participant is allowed. The full name and details of the replacement must be advised in writing to the Secretariat by 20th September 2018.

#Each paper only allows ONE presenter to register under presenter's rate, co-authors will be under member or non-member's rate. For author registration, the online portal will open when the full papers are accepted on 31st July 2018.


Conference Entitlements:

- 2 days conference pass

- Programme book and E-proceedings

- 2 coffee breaks and 1 lunch per day


To register, please click here to be redirected to the registration portal.

Conference Sponsor                                    $7,000 (Taken)                                                                   

Limited to 2 Sponsors                                                                                                                     

- A full page advertisment in the Conference Programme                                          

- Passes for 2 delegates to the Conference 

- A banner in the Conference Venue                                                                                                         

- Acknowledgement at the opening and closing of the Conference


Thumbdrive Sponsor                                   $6,000 (Taken)

Limited to 1 Sponsor                                                                                                              

- Company Logo on thumbdrive                          

- Company profile infromation in thumbdrive

- passes for 2 delegates to the Conference


Table Top Exhibitor                                     $3,500 (Taken) 

Limited to 5 Sponsors

- Exhibition space: Table top with 2 chairs

- A full page advertisment in the Conference Programme

- Passes for 2 delegates to the Conference  


Lanyard Sponsor                                        $3,000 (Taken)  

Limited to 1 Sponsor

- Company Name and Logo on the Lanyard

- Passes for 2 delegates to the Conference 


Full Page Advertisers                                  $2,500

- A full page advertisement in the Conference Programme 

- Passes for 2 delegates to the Conference  




Sponsored by

                                     Conference Sponsors

Thumbdrive Sponsor

                                                                    Table-Top Exhibitors

Lanyard Sponsor




*** For more information please contact the secretariat at tucss@cma.sg ***