ITA MEMBER NATION ACTIVITY REPORTS 2019 archaeological findings which were expected to be encountered within the Greece historical centre of Thessaloniki. Central Athens railway Station – Three Name: Greek Tunnelling Society bridges area. Type of Structure: non-profit association with The €66M project, assigned to INTRAKAT membership – SIDIRODROMIKA ERGA JV, involves the Number of Members: 250 members, 14 corporate construction of a 2.36km long four-track members rail corridor, 60% of which will be fully underground. ASSOCIATION ACTIVITIES DURING The 7.6km long new Metro line 3 will Xanthi – Echinos – Greek/Bulgarian 2019 AND TO DATE consist of 6 modern Metro Stations. borders road axis (Vertical axis 70 of The Council Board executed monthly 6.5km of the tunnels were constructed Egnatia Highway) meetings for the organization of GTS using TBM. The Metro Extension to The construction of two tunnels, activities. Currently GTS sponsors Piraeus will serve approximately 132,000 approximately 120m long, along the new include “ATHENS METRO S.A.”, TERNA passengers on a daily basis. Tunnelling highway connecting Xanthi – Sminthi S.A., PPC S.A., INTRAKAT S.A., NAM excavation works are complete, and – Echinos - Greek-Bulgarian borders S.A., SIKA, MAPEI, AKTOR S.A., HILTI, works are currently under way for the is near completion in the area of the GRECIAN MAGNESITE, ELTERGA, EDAFOS construction of the stations. Dimario-Greek/Boulgarian borders, while Engineering Consultants S.A, GR8 GEO. two others (475m and 170m) will be A half-day conference was organized Thessaloniki METRO constructed to mitigate severe landslide on the 16th-1-2019 titled “Licensing The first Metro Line of the second largest areas. - Monitoring/Surveillance Methods - city of Greece, Thessaloniki, is under Experiences from the Operation of the implementation. The project includes Athens – Patras railway: Psathopyrgos – Greek Tunnels Motorways”. The lectures 18 underground stations, ~14.4km of Patras (Bozaitika area) section were delivered by representatives of the tunnelling and a 50,000m2 depot in The project involves the construction main motorway concessionaires as well Pylea area. Approximately 80% of the of the new 10.5km double-track railway as by a representative of EGNATIA ODOS total tunnels’ length were constructed line. It includes works Installation of the S.A. using two EPBMs. The excavation and track bed of the new railway line, approx. Between 6 – 8 November 2019 the final lining installation of the twin single- 10.5km long, as well as construction of Hellenic Conference on Geotechnical track tunnels has been completed. structures, the most important of which Engineering was held which included a State of the art construction methods, are 2 Cover & Cuts, one in Ag. Vassileios special session on tunnelling. driverless trains and modern operation area, 625.97m long, and one in Rio area, On the 6th of December 2019 the systems were specified and implemented. 392.20m long; 9 Railway Bridges and GTS celebrated St Barbara’s day with The Project focuses on minimizing the approx. 33 Overpasses of the intersecting a technical visit to the new Piraeus impact on the highly congested streets road network, and 3 Road Bridges for the METRO station. More than 60 members of the Thessaloniki City Centre and on side road network attended the site visit and the lectures providing safe transportation services to for the presentation of the project at the the densely populated urban areas. The Athens – Patras railway: Rododafni – construction site. Metro line alignment was designed at Psathopirgos section Three issues of the electronic magazine significant depths in order to minimize The project involves the construction of the Greek Tunnelling Society were the possibility of interventions with of the infrastructure for the new double published. The Young Members Group promoted tunnelling news, research results, new projects etc, both in Greece and abroad via social networks (facebook page). During 2019 the GTS created a scientific group of national and international tunnelling and underground space experts and submitted on 10-1-2020 a bid to host - for the first time in Greece - the World Tunnel Congress in 2023. The proposed host city for WTC2023 is Athens (https://athenswtc2023.gr/) CURRENT TUNNELLING ACTIVITIES ATTIKO METRO (Athens METRO) Since March 2012, the METRO Line 3 extension to Piraeus has been under construction and approaches completion. 28 ITA MEMBER NATION ACTIVITY REPORTS 2019 railway line, 21.5km long, between ch. will connect Lefkada island of the Ionian 91+500 to ch.113+000. It includes Sea with the Greek mainland. It will the Panagopoula twin tunnels (each include a 0.8km long immersed tunnel approximately 4.800m long). as well as 0.5km long entrance and exit, partially Cut & Cover, works are in an Central Greece Motorway (E65) – Lamia environmentally sensitive and seismic – Xyniada Section active area. The project concerns the construction of the south section of the Central Greece Motorway Tunnels along the new Motorway. It includes a twin tunnel with a Elefsina – Thiva – Yliki Road Section total length of approximately 3km. The new motorway, which is currently in the planning stage, includes the Halkidiki mining project construction of three (3) new tunnels The north-eastern side of Halkidiki, with a total length of 5km. in northern Greece, has a long history of mining activity. Currently Urban tunnels in the Metropolitan area three exploitation areas exist namely of Athens Olympiada, Skouries and Stratoni. The The implementation of the Athens overall development of Kassandra mines Metropolitan area Master Plan requires is considered as a mega-project with some new road tunnels, which include: numerous challenging civil works (surface i) The 3km long Ilioupolis urban tunnel and underground) and earthworks. ii) The 2km long motorway tunnel that In underground infrastructure, the will connect Attiki Odos (highway) and most notable works completed or Rafina port and iii) The 2.2km long double currently under construction include the tube Kimis Urban tunnel that will connect Kokkinolakkas stream diversion tunnel, Attiki Odos (highway) with Athens – 1,140m long, the Olympias main access Thessaloniki highway. tunnel, ~9km long, the Skouries spiral the design, construction, financing, decline, ~5.5km long and the Skouries operation, maintenance and exploitation STATISTICS access shaft, ~700m deep. of an approximately 15km long highway 1. Length or volume excavated - which includes a 1.2km long immersed % mechanized/% conventional FUTURE TUNNELLING ACTIVITIES tunnel and three tunnels with a total during 2019 New Athens Metro Line 4 - Section A length of 2km. 0% “ALSOS VEIKOY – GOUDI” The €1.6bn budgeted Design and Built Northern Road Axis of Crete island 2. Amount (USD or EUR) of tunnelling/ Contract concerns a new Metro Line (NRAC) underground space facilities in the city of Athens. The 13km long, A concession project concerning awarded in 2018 fully automated new METRO line 4, the design, construction, financing, No available data will consist of 15 stations. The project operation, mainte¬nance and exploitation 3. List of tunnels under construction includes tunnelling works, underground of an approximate¬ly 200km long Athens METRO extension to stations, station fit-out, mechanical and motorway which includes a significant Piraeus, Thessaloniki METRO, electrical systems, rail Infrastructure and number of tunnels (total length ~ 30km Othris mountain twin tunnels (E65 rail systems. single tube). The project is split in 2 motorway), tunnels along the The U-shaped Line 4 consists of two separate competitions: i) a concession Dimario-Greek/Boulgarian borders radial branches to Galatsi and Maroussi agreement for the section between road section, tunnels along the municipalities, as well as of one central Chania and Hersonissos, and ii) a PPP Rododafni - Patra (Bozaitika area) section that runs through Athens City project for the Hersonissos-Neapolis new railway section and some other Centre. Tender award of the first phase section. The cost has been estimated at hydraulic and railway tunnels in the of Line 4 is currently ongoing (from around €1.1bn for the concession project Attika region. Alsos Veikou to Goudi). The scope of the and €359.6M for the PPP project. The project is to cover the foreseen ridership tendering process involves a Competitive of 8,000 passengers at peak hours in Dialogue. Currently the Contracting EDUCATION ON TUNNELLING the section with the highest passenger Authority (the Ministry of Infra¬structure IN THE COUNTRY load per direction in 2030, as well as and Transport) is examining the technical the ridership of 13,000 passengers/peak skills of the interested parties. National Technical university of hour/direction in the longer run. Athens Immersed road tunnel connecting Postgraduate Course Underwater road link connecting Lefkada island – Aetoloakarnania region Design and Construction of Salamina - Perama in Attica region – A project which is currently in the Underground Works Estimated cost ~ €400M. planning stage and concerns the design, Schools: Mining and Metallurgical A competitive dialogue process is construction, financing, operation, Engineering Civil Engineering (more underway between the preferred three maintenance and exploitation of an info: http://tunnelling.ntua.gr/) interested parties. The project concerns approximately 4km long high¬way that 29.