The document lists 12 technical papers presented on excavation challenges and solutions for the underground structures of the Mangdechhu Hydro-Electric Project in Bhutan. The papers covered topics such as geotechnical instrumentation and monitoring of underground powerhouse excavation, numerical modeling of support systems, excavation and rock support of concrete dam abutments, tunneling challenges in the Himalayas, surge shaft excavation, and use of numerical modeling to evaluate stability and support systems. Many of the papers were accepted to international conferences on dams, underground structures, rock engineering, and tunneling held between 2016 and 2017.

1. List of Technical papers presented
1. Geotechnical instrumentation and monitoring of excavation of underground
power house caverns of Mangdechhu Hydro-Electric Project. Special
Publication, Journal of Engineering Geology, October 2015
2. Numerical modeling and re-evaluation of support system while excavating
underground cavern in weak rock. Special Publication, Journal of Engineering
Geology, October 2015.
3. Excavation and rock support for concrete dam abutments: a case study of Mangdechhu
Hydroelectric Project, Bhutan. Special Publication, Journal of Engineering
Geology, October 2015.
4. Case Study on Dam Foundation Condition of Mangdechhu Hydroelectric Project,
Bhutan. Special Publication, Journal of Engineering Geology, October 2015.
5. Tunneling Challenges in Himalayas: A case study of HRT of 720 MW Mangdechhu
Hydro-Electric Project. Paper communicated and accepted for Nepal Tunnelling
conference to Kathmandu Nepal, 2016.
6. Case Study on Upstream Coffer Dam Foundation Condition of Mangdechhu
Hydroelectric Project, Bhutan. Paper communicated and accepted for
International conference on Dams and Underground Structures New Delhi, 2016.
7. Excavation and Rock Support for Concrete Dam Abutments: A Case Study of
Mangdechhu Hydroelectric Project, Bhutan. Paper communicated and accepted
for International conference on Dams and Underground Structures, New Delhi
2016.
8. Surge Shaft Excavation in Adverse Geological Conditions: An Overview of
Excavation Methodology, Support System, Insitu Treatment and Monitoring of
Rockmass Implemented for Excavation of 13.5m Diameter and 152 m Deep
Surge Shaft of Mangdechhu Hydroelectric Project; Bhutan. Paper
communicated for International conference on Dams and Underground
Structures, New Delhi 2016.
9. Tunnel Excavation in Challenging Strata: Challenges and Solutions. An
Experience from Head Race Tunnel Excavation of 720MW Mangdechhu
Hydroelectric Project; Bhutan. Paper communicated and accepted for
International conference on Dams and Underground Structures, New Delhi
2016.
10. Numerical Modeling a Tool to Evaluate Stability and Support System of Large
Underground Caverns: A Case Study of Underground Power House Caverns of
Mangdechhu Hydro-Electric Project. Paper communicated for International
conference on Dams and Underground Structures, New Delhi 2016.

2. 11. Recent advances in Rock Engineering, Advances in Excavation, Design and Support
Methods: A Case study of Mangdechhu Project, Trongsa, Central Bhutan. Paper
communicated and accepted for International conference on Recent Advances
in Rock Engineering, Bengaluru. 2016.
12. Engineering Design and Construction of Underground Power House Caverns of
Mangdechhu Hydro-Electric Project (720 MW), Bhutan. Abstract communicated for
World Tunneling Conference, Norway 2017.