Metro station 11 – III metro diameter

HIDROINJEKT LTD performed the fortification activities on Metro Station 11, part of the 3rd metro diameter of the Sofia Metro Expansion Project. A total of 7,000 m2 of diaphragm walls with a thickness of 0.80 m and a maximum depth of 23 meters were made, under the protection of bentonite suspension; 1000 m² of diaphragm walls with a thickness of 0.60 m and a depth of 20 meters under the protection of bentonite suspension. The execution of the slotted walls is with waterstop tape.