TDS delivers drill equipment for the largest tunnel project in the world

In the course of the selection of Qatar as the football World Cup host in the year 2022 and the strongly growing population combined with new districts in the capital city of Doha as a consequence thereof plannings for a new underground system started in 2011. In this context 4 underground lines in total are planned to be built as a twin bore tunnel each. In total, up to 21 tunnel drilling machines (TDM) are deployed for this project. Thus, this project is currently the largest tunnel site throughout the whole world. Due to the geological conditions (soft soil, limestone, slate content) with a partly very severe ingress of water through existing clefts our customer worked out a proposal for solution for sealing the required crosscuts by way of injections. The entire drill equipment for this project was delivered by TDS and brought into service on site. Due to the long ways of transportation several options with regard to the drilling work have been developed by us in order to flexibly comply with the requirements on site in case of any difficulties occurring. After drilling operations for several weeks the holes can be drilled to the fullest satisfaction of the customer and the necessary injections can be inserted.