Qatar celebrated the breakthrough of an EPBM which had excavated a 5km-long sewer tunnel in Doha on January of 2018, with average boring rate of 13.7m per day. The breakthrough represents the completion of the Western branch, one of the three main branches forming the Main Trunk Sewer of the Doha South Sewage infrastructure project. […]
A large U-shaped TBM has completed the excavation of a 3.3 km single tube railway tunnel in northwest China’s Shaanxi Province on January, 2018.The cutting cross section of the U-shape TBM is 10.95 m high and 11.90 m wide. Its shape and design were customized by manufacturer CREG TBM Germany for the construction of the […]
The first TBM metro project was launched to work on the Grand Paris Express in Champigny-sur-Marne. The 10 m diameter TBM had been lowered 20 m below ground. It will excavate a 2.2 km section of the 33km-long line 15 south, which will connect Pont-de-Sèvres to Noisy-Champs by 2024. Eventually 10 TBMs will work simultaneously […]
A 6.65m diameter Robbins EPBM broke through at Chennai Metro, making this the third bored project tunnel in India. The EPB was refurbished, the inner seal greasing system was changed from auto to manual mode and the foam nozzle system was modified. These changes optimized the machine for excavation in the highly variable mixed face […]
Two breakthroughs took place in December 2017 on Egypt, for the new Ismailia road tunnel project. The total driven length of the two twin tunnels is around 15 km. Herrenknecht Mix shields with a cutting diameter of 13.02m tackled the sands and gravels encountered while traversing the old and new Suez Canals. The machines bored […]
Two 4.74 m, diameter hard rock double shields will be used for Mae Tang-Mae Ngad water diversion project in Thailand which will work on complicated and multiplex geology ranges, such as granite, quartzite, sandstone, mudstone, clay stone, and highly fractured and weathered rock masses (with a UCS range of 8MPa to 220MPa). The TBMs will […]
