Innovation is the first driving force leading development. On May 9, 2023, the shield machine "China Railway No. 1237" manufactured by China Railway Group's innovative application of green concepts officially rolled off the assembly line. The equipment will be exported for the construction of high-speed railway tunnels in Sicily, Italy, and serve the Belt and Road construction with Chinese high-end equipment.

It is reported that "China Railway No. 1237" is an open earth pressure double-mode shield machine with a length of 135 meters and a total weight of more than 1,900 tons. In terms of intelligent control, the equipment can realize adaptive adjustment and matching with the excavation strata, independently achieve the best match between excavation efficiency and energy consumption, and achieve the purpose of green energy saving; in terms of low-carbon environmental protection, it adopts energy-saving intelligent manufacturing technology and advanced dust removal technology , Reduce dust noise emissions.According to reports, "China Railway No. 1237" is also equipped with continuous excavation technology and rapid mold change technology, which can effectively improve excavation efficiency and energy saving and emission reduction efficiency.

On the same day, "China Railway No. 1237" and "China Railway No. 1285" were rolled off the production line at the same time as the TBM (hard rock tunneling machine) for downhill tunneling with a large dip angle. According to reports, the equipment will be used in the construction of Linhuan Coal Mine of Huaibei Mining Group. In view of the difficulties in the construction of the roadway of this project, the research and development team of "China Railway No. 1285" has carried out targeted design on the cutterhead excavation system and horizontal support propulsion system, so that the equipment has the characteristics of safety, environmental protection, high efficiency, and intelligence, which will be extremely Greatly improve the construction efficiency and safety level, and improve the working environment for workers.

The relevant person in charge of China Railway Engineering Equipment Group said that the official off-line of the two equipment marks that China Railway's research and development in the field of tunnel boring machines is moving towards high-end, intelligent and green direction.

It is reported that up to now, the total number of China Railway shield machine and TBM orders has exceeded 1,500 units, and the total mileage of tunnel excavation has exceeded 4,000 kilometers. The products are exported to more than 30 countries and regions such as Germany and France. Editor / Zhao E