Business Areas

We lead in planning, design, construction management,
and the development of new technologies in the civil engineering field.

HomeBusiness AreasGround Tunnel
Geotechnical & Tunnel

Geotechnical & Tunnel

With advanced and accumulated technologies for analyzing and predicting the geotechnical behavior of soils and rocks, we are leading the field of geotechnical and tunnel engineering in various areas such as weak ground, slope stability, foundations, facilities, and tunnels. Through continuous efforts in new technology development and design innovation, we provide differentiated geotechnical and tunnel design services to ensure construction projects achieve the highest levels of economic efficiency and stability.

Geotechnical & Tunnel
Business Areas

We provide
engineering design services
with differentiated technology
focused on safety and
cost-efficiency.

Geotechnical Investigation
  • Planning for geotechnical surveys for civil engineering design
  • Conducting surveys and analyzing ground properties
Soil and Foundation Design
  • Soft ground improvement and settlement stability design
  • Stability assessment and reinforcement design for soil/rock slopes
  • Foundation type and construction method design for civil structures
  • Earth-retaining temporary structure design for subway stations and underpasses
Tunnel Design
  • Mountain and deep tunnel design
  • Urban tunnel design
  • Design of other underground structures
Underground Safety Impact Assessment
  • Assessment of groundwater variation and stability of nearby structures in underground development projects
  • Establishing measures to ensure ground stability during excavation
  • Analysis of hydraulic properties and groundwater flow
Detailed Safety Inspection and Performance Evaluation of Slopes
  • Inspection of physical/functional defects and structural integrity of cut slopes
  • Evaluation of structural performance, repair/reinforcement strategies, and maintenance planning
Research & Development (R&D)
  • Enhancing technical capabilities through development and application of new technologies and construction methods

Ground Tunnel Representative Projects

Sambu Construction Co., Ltd. Palyong Tunnel Private Investment Project 2012.05.01 ~ 2014.08.31
Daewoo E&C Co., Ltd. Guri–Pocheon Expressway Private Investment Project 2008.03.28 ~ 2011.12.31
Hyundai Engineering & Construction Co., Ltd. Saemangeum North–South Road Construction Phase 2 (Section 2) T/K 2018.01.29 ~ 2018.08.31
Poonglim Industrial Co., Ltd. Gimpo Urban Railway Section 5 – Earthwork Construction T/K (Temporary Structures Design) 2013.10.23 ~ 2013.12.31
Daelim Industrial Co., Ltd. Ulleung Airport Construction Project – Technical Proposal Design (Foundation & Slope Design) 2019.07.23 ~ 2019.12.31
Daelim Industrial Co., Ltd. Han River Restoration Project Section 3 (Yeoju District 1) T/K 2009.08.12 ~ 2009.10.31
Taeyoung Construction Co., Ltd. Seoul Subway Line 9 Phase 4 Extension Section 2 – Basic Design for Construction T/K(Geotechnical & Temporary Structures) 2021-01-08~2021-07-31
SK ecoplant Co., Ltd. Songsan Green City West District Phase 1, Section 2 – Technical Proposal for Detailed Design 2013-01-30 ~ 2022-08-30

Ground Tunnel Achievement

Total 37
  • SK Ecoplant Asan City Flood Damage Reduction Master Plan Readjustment 2022-08-30 ~ 2023-01-30
  • Dongkuk Steel Mill Co., Ltd. Incheon Plant Rear Site Indoor Scrap Yard Construction Technical Review 2022-07-27 ~ 2022-11-30
  • K-water Nakdong River Basin Pipeline Facility Underground Cavity Investigation Service 2022-06-24 ~ 2023-03-20
  • Taeyoung Construction Seoul Subway Line 9 Phase 4 Section 2 Construction Project T/K Basic Design (Geotechnics and Temporary Structures) 2021-01-08~2021-07-31
  • SK Ecoplant Songsan Green City Western District Phase 1 Section 2 Detailed Design Technical Proposal 2022-08-30~2013-01-30
  • DL E&C Ulleung Airport Construction Technical Proposal Design (Airport Foundation and Slope Design) 2019-07-23 ~ 2019-12-31
  • Seocheon-gun, Chungcheongnam-do Provincial Road No. 617 Small-Scale Underground Safety Impact Assessment 2019-06-17 ~ 2020-09-14
  • Korea Expressway Corporation Gyeongbu Line (Busan, 141.14k) and 56 Other Sites Cut Slopes and Retaining Walls Performance Evaluation 2018-12-26 ~ 2019-05-03
  • Cheonan City Buldang District Stormwater Retention Facility Small-Scale Underground Safety Impact Assessment 2018-06-26 ~ 2018-08-24
  • Chungcheongnam-do General Construction Office Eocheon–Gongju (Phase 4) Provincial Road Underground Safety Impact Assessment 2018-03-26 ~ 2018-08-22
  • Korea Expressway Corporation Daejeon-Chungnam Branch Cut Slopes and Retaining Walls Precision Inspection 2018-03-15 ~ 2019-04-01
  • Hyundai E&C Saemangeum North-South Road Phase 2 (Section 2) T/K Bridge Foundation and Soft Ground Design 2018-01-29~2018-08-31
  • Hanwha E&C Bongdam–Songsan Expressway Private Investment Project Slope Inventory Mapping 2017-12-01 ~ 2020-12-31
  • Halla Corporation Pyeongtaek Eastern Expressway Private Investment Project Tunnel, Bridge Foundation, and Slope Design 2017-10-30~2020-06-30
  • Ssangyong E&C and Others Paju–Yangju–Pocheon Expressway Route 400 Section 4 Tunnel and Bridge Foundation Design 2017-01-16~2017-05-20
  • Korea Expressway Corporation Seoul–Sejong Expressway Anseong–Guri Section 3 Tunnel Design 2016-04-27~2017-09-15
  • Korea Expressway Corporation Gosam Tunnel (Seoul–Sejong Section 3 Expressway) 2016-04-27~2017-09-15
  • Seoul Metropolitan Government Byeollae Line (Subway Line 8 Extension) Construction Project 2015-09-17 ~ 2017-05-31
  • Hanwha E&C Bongdam–Songsan Expressway Private Investment Project Tunnel, Bridge Foundation, and Slope Design 2015-09-16~2017-03-31
  • Korea Expressway Corporation Paju–Pocheon Expressway Section 3 Bridge Foundation and Slope Design 2014-03-20~2015-12-23
  • Daegu National Land Management Office National Route 4 Gwanho Five-Way Intersection Improvement Project Underpass Foundation and Temporary Structure Design 2013-11-14~2015-12-30
  • Poonglim Industrial Co., Ltd. Gimpo Urban Railway Section 5 Trackbed Construction T/K Temporary Structure Design 2013-10-23~2013-12-31
  • Iksan Regional Office of MOLIT Chupo–Amtae Road Construction Project Bridge Foundation and Soft Ground Design 2013-06-14~2016-07-07
  • Sambu Construction Co., Ltd. Palyong Tunnel Private Investment Project Tunnel, Bridge Foundation, and Slope Design 2012-05-01~2014-08-31
  • Korea Expressway Corporation Pohang–Yeongdeok Expressway Section 4 Bridge Foundation and Slope Design 2012-02-29~2013-08-28
  • Busan Regional Office of MOLIT Samjang–Sancheong National Road Construction Project Tunnel Design 2011-12-19~2014-04-18
  • Iksan Regional Office of MOLIT Gangjin–Maryang Road Construction Project Bridge Foundation and Slope Design 2000.00.00 ~ 2000.00.00
  • Korea Expressway Corporation Hamyang–Ulsan Expressway Section 30 Bridge Foundation and Slope Design 2010-09-06~2012-09-07
  • Dongbu Engineering Co., Ltd. Danyang Submerged Weir Construction Alternative Design (Cofferdam and Seismic Design) 2000.00.00 ~ 2000.00.00
  • Dongbu Construction Co., Ltd. Honam High-Speed Railway Section 2-3 New Trackbed Alternative Design (Bridge Foundation Design) 2009-10-07~2009-12-10
  • DL E&C Han River Restoration Section 3 (Yeoju District 1) T/K Weir Foundation, Embankment, and Cofferdam Design 2009-08-12~2009-10-31
  • Daewoo E&C Guri–Pocheon Expressway Private Investment Project Tunnel, Bridge Foundation, and Slope Design 2008-03-28~2011-12-31
  • Kumho E&C Incheon–Gimpo Second Ring Expressway Private Investment Project Tunnel, Bridge Foundation, Soft Ground, etc. 2007-12-24~2009-05-31
  • Hyundai E&C Changwon–Busan Expressway Private Investment Project 2007-12-20~2012-09-30
  • Korea Expressway Corporation Chungju–Jecheon Expressway Section 4 Construction Project Tunnel Design 2006-11-13~2009-04-26
  • Hanwha E&C Pyeongtaek–Siheung Expressway Private Investment Project Soft Ground Design 2006-09-19~2007-09-30
  • Korea Expressway Corporation Jusaeng Tunnel (88 Olympic Expressway) 2002-10-17~2005-11-09