Tunneling

The company Adval JSC, specialized in tunnel construction, has executed over 50 km tunnels and has approximately 20 years of experience in this field. The company builds all types of tunnels, such as: road, railroad and subway, hydro technical, etc.

New Austrian Tunneling Method (NATM)

The essence of the New Austrian Tunneling Method for tunnel construction is in the convertion of ground masses through proper supporting elements from the loading facility surroundings to bearing element. The tunnel shall be excavated typically in full profile, however it could be carried out in sections. The basic in this case is in installing of deformable support – anchors, steel arch frames and shotcrete- in ord read more »


Cut and Cover Method

The Milan method allows for simultaneous construction of substructure and superstructure. This approach was described as “cover then cut/ dig” as this indeed consists of two constructed parallel diaphragm walls, or piles /sheet retaining wall/ that are connected together by monolithic slab over them, after which ground is being excavated. The Milan method involves diaphragm wall construction, as well as cast- in pil read more »