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Advanced TBM Tunnel Enlargement Method

Sequence of Construction

Comparison of Tunneling Methods Introduction Sequence of Construction Features of the Enlargement Economic Analysis Videos

⑴ During excavation of pilot tunnel using TBM

⑵ Drilling of radial charge holes in advance on upper half section of the pilot tunnel, at one or two face ahead of the blasting for enlargement / Drilling of longitudinal charge holes on the outer most face of final tunnel section

⑶ Charging on upper half section / Drilling and charging on lower half section, simultaneously

⑷ Blasting for enlargement both on upper and lower half section of the pilot tunnel

⑸ Rapid muck removal by muck car after ventilation

TBM excavation

⊙ Backup of TBM

Enlargement

⊙ Enlargement during the TBM excavation(1, 2, 3, 4, 5, 6)

⊙ Enlargement after the TBM excavation

▣ Drilling of radial charge holes in advance in TBM pilot tunnel, at one or two face ahead of the blasting for enlagement

▣ Blasting for enlargement both on the upper and lower half section

▣ Removal of mucks using blasting protector and muck car

Lining

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LTM Corp.

Company : LTM Corp.｜ Address : Suite #301 Induck Bldg., 677 Jayang-2Dong,
Gwangjin-Gu, Seoul, Korea (143-873)｜ Business license : 215-81-92552

President : Park, Hae Shin ｜ Call : 82-2-412-6801 (Consultation time - Weekday 9:00~18:00, Lunch time - 12:00~13:00)

LTM Corp.

Company : LTM Corp.

Address : Suite #301 Induck Bldg., 677 Jayang - 2Dong, Gwangjin-Gu, Seoul, Korea (143- 873)

Business license : 215-81-92552

President : Park, Hae Shin ｜ Call : 82-2-412-6801 (Consultation time - Weekday 9:00~18:00, Lunch time - 12:00~13:00)

Admin

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