Hanmac Engineering plays a leading role in the tunnel and geotechnical fields with various experience and acquired knowledge. Hanmac Engineering continuously advances the tunnel design technology and develops innovative engineering technology in geological survey and weak foundation improvement to provide the best services and competitiveness to clients.

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• Business Areas

Soil Survey and Weak Foundation Improvement Design

Various soil survey/testing and analysis for civil engineering design

Tunnel and Underground Structure Design

Mountain and large offset tunnel planning establishment and safety assessment

Structure Foundation Design

Foundation and safety analysis of various structures

Slope Design

Soil/bedrock slope safety and reinforcement construction method

Weak Foundation Design

Weak foundation improvement and sinking safety design

Sheathing Temporary Facility Design

Temporary underground stations and roadway safety assessment

R&D

Technology enhancement through new technology and construction method development and application

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• Achievement

• Tunnel and Underground Structures

  Sapaesan Tunnel L=4.0km (Seoul Ring Expressway)

  Geumsung Tunnel L=4.4km (Chungju-Jaecheon Expressway)

  Palyong Tunnel L=2.7km (Palyong Tunnel Expressway)

  Jusaeng Tunnel L=1.6km (88 Olympic Expressway)

  Incheon Tunnel L=5.5km (Incheon-Gimpo Expressway)

  Sancheong Tunnel L=3.0km (Samjang-Sancheong Expressway)

  Weak Foundation Improvement

  Weak Foundation L=1.5km, PBD +VCCP공법 Method (Changwon-Busan Expressway)

  Weak Foundation L=18.0km, PBD +SCP공법Method (Pyeongtaek-Siheung Expressway)

  Weak Foundation L=8.3km, PBD +VCCP공법Method (Incheon-Gimpo Expressway)

  Structural Foundation and Slope Areas

  Bridge L=1.0km, Single cast-in-place concrete pile Ø=3,000mm (Chupo – Amtae road construction)

  Bridge L=3.7km, Single cast-in-place concrete pile Ø=2,700mm (Pyeongtaek-Siheung expressway)

  14 Bridges , 32 slope areas (Paju-Pocheon expressway Lot No.3)

  8 Bridges, 80 slope areas (Hamyang – Ulsan expressway Lot No.30)

  Bridge L=3.1km, Single cast-in-place concrete pile Ø=2,700mm (Incheon-Gimpo expressway)

  5 Bridges, 10 slope areas (Gangjin-Maryang road construction)

  16 Bridges, 85 slope areas (Pohang-Youngdeok expressway Lot No.4)

  41 Bridges, 142 slope areas (Guri-Pocheon expressway)

  Temporary Sheathing Facilities

  Temporary facility L=0.7km, 1 underground roadway (Gwanho five-way intersection improvement construction)

  Temporary facility L=1.5km, 1 underground roadway (Incheon-Gimpo expressway)

  Temporary facility L=0.2km, 2 stations, 3 ventilating openings (Gimpo urban railroad Lot No. 5 T/K)