Lesotho Highlands Development Authority (LHDA)’s Post

SUEDLINK TBM READY FOR ASSEMBLY Assembly of the TBM for Germany’s Suedlink project will soon begin in the launch shaft. The 4.9m-diameter Herrenknecht AG mixshield TBM passed its Factory Acceptance Test in July and is now ready for assembly at the launch site in Wewelsfleth in Schleswig-Holstein. ARGE Tunnel Elbx, comprising PORR Group and Wayss & Freytag Ingenieurbau AG, will operate the TBM to bore a 5.2km-long tunnel under the River Elbe. The river crossing is part of the Suedlink grid expansion project that will transport electricity over 700km from Brunsbüttel in Schleswig-Holstein, northern Germany, to Großgartach in Baden-Württemberg, southern Germany. The transmission system operators are Teneet and Transnet. After passing its FAT, the TBM was disassembled and transported by ship from Herrenknecht AG’s factory in Schwanau to northern Germany, and then by heavy load transport for the final 2km. The diameter of the TBM allowed the cutterhead to be delivered as a complete component. The TBM was designed to meet the challenges of geology of clay, peat, sand, and gravel as well as stones and boulders. Read more online: https://lnkd.in/e6ZzAKxq 👉 Invite your colleagues and connections to the 'Tunnels & Tunnelling' group, the single largest network of tunnelling professionals on LinkedIn, for them to also receive daily updates on the sector. 👉 Follow Tunnels and Tunnelling International to receive our weekly newsletter #tunnelling #infrastructure #civilengineering #undergroundconstruction

TBM COMPLETES SECOND INCLINED SHAFT FOR CHINESE PUMPED HYDRO PROJECT China’s first domestically produced large-diameter, large-inclination inclined shaft TBM has broken through on the No. 2 diversion shaft on the Luoning Pumped Storage Power Station. The breakthrough has completed the full connection of two key water diversion inclined shafts, setting a new mechanised construction record in China’s pumped storage power station sector, and successfully applying a new mechanised full-section excavation model for inclined shafts. TBM Yongning, jointly developed by CREC’s subsidiary China Railway Engineering Equipment Group Co., Ltd., State Grid Xinyuan Luoning Company, and Sinohydro Bureau 6, completed the No. 2 shaft by tunnelling upwards at an angle of 38.742 degrees. It bored 860m of the 873m length. The TBM began excavation on April 25. It achieved a daily tunnelling record of 22.75m and a monthly record of 332m, setting a record for inclined shaft TBM tunnelling in China. TBM Yongning broke through on the No. 1 inclined diversion shaft in January this year. Read more online: https://lnkd.in/ed989Bie 👉 Invite your colleagues and connections to the 'Tunnels & Tunnelling' group, the single largest network of tunnelling professionals on LinkedIn, for them to also receive daily updates on the sector. 👉 Follow Tunnels and Tunnelling International to receive our weekly newsletter #tunnelling #infrastructure #civilengineering #undergroundconstruction

CRCHI PRODUCES TBM FOR SOUTH-TO-NORTH WATER DIVERSION PROJECT An open-type rock TBM for China’s South-to-North Water Diversion Project has rolled off the production line at Railway Construction Heavy Industry Corporation Ltd (CRCHI). The company says the 11.93m-diameter machine is the largest of its kind in China. TBM Jianghan Neolithic will be used on the central section of the South-to-North Water Diversion Project that will divert the Yangtze River to supplement the Han River. It will also excavate the largest and longest soft rock deformation section of the project. The TBM is approximately 175m long and weighs around 3,000 tons. It has a designed minimum radius of 800m and adapts to a maximum slope of 10%. With an immersive intelligent excavation system, it has real-time visualisation of the geology in front of the TBM, precise autonomous control of excavation routes, automatic posture correction, and automatic excavation step change. TBM Jianghan Neolithic will be deployed on the construction of the 3rd Section traffic tunnel and main tunnel, excavating a total distance of 16.35km. Read more online: https://lnkd.in/eQqeUzBV 👉 Invite your colleagues and connections to the 'Tunnels & Tunnelling' group, the single largest network of tunnelling professionals on LinkedIn, for them to also receive daily updates on the sector. 👉 Follow Tunnels and Tunnelling International to receive our weekly newsletter #tunnelling #infrastructure #civilengineering #undergroundconstruction

TBM breakthrough in Turkey. If anyone has details about the project, please comment below to share information and explanations for everyone. Video credit: Osman Yılmaz #tbmbreakthrough #tunnelboringmachine tunnel #tunnelengineeringisthefuture #tunnel #tunnelling #tunneling #tunel #civilengineering #miningengineering #knowledge #learntunnelling #tunnelengineering #turkey #geotechnicalengineering

NORTH EAST LINK TBM ASSEMBLY North East Link is another step closer to slashing travel times and taking trucks off local roads, as segments of the first tunnel boring machine (TBM) have been lowered into the ground – as the project gets ready to dig the twin road tunnels. The assembly is taking place at the TBM launch box in Watsonia, where two of the largest TBMs in the southern hemisphere will start digging the 6.5km tunnels in mid-2024. The first pieces of the huge machines have been lowered into the ground by a 550-tonne gantry crane – when assembled, each 4000-tonne TBMs will be 90 metres long and more than 15 metres in diameter. From mid-2024, the TBMs will start working their way south from Watsonia toward Bulleen, installing tunnel walls made of almost 44,000 individual concrete segments manufactured locally in Benalla. cross the north-east, a massive amount of work is underway to prepare for tunnelling. The 200-metre-long TBM launch box in Watsonia is complete, and work has started on the underground box structures near Lower Plenty and Manningham roads where the TBMs will excavate into on their journey south. Video courtesy of North East Link 👉 Invite your colleagues and connections to the 'Tunnels & Tunnelling' group, the single largest network of tunnelling professionals on LinkedIn, for them to also receive daily updates on the sector. 👉 Follow Tunnels and Tunnelling International to receive our weekly newsletter #tunnelling #infrastructure #civilengineering #undergroundconstruction