The first TBM hard rock tunnel boring machine independently developed in China was put into operation

It was learned from China Railway Construction Co., Ltd. that the national Thirteenth Five-Year Plan for Water Conservancy Construction using the first TBM hard rock boring machine independently developed by China—the 22.6-kilometer water diversion tunnel of the general trunk line of Jinsong Water Supply Project in the central city of Jilin Province 20 The day passed and laid the foundation for the completion of the project by the end of 2019.

The Songshui River Water Supply Project in the Central City of Jilin Province transferred the Songhua River water from Fengman Reservoir to the central city of Jilin Province. The total length of the water transmission line is 263.45 kilometers, and the total investment is 10.177 billion yuan. It is the largest investment in Jilin Province and the longest water transmission line. Large-scale cross-regional water transfer project with the widest water area and the highest difficulty of construction.

According to Chen Lihe, project manager of China Railway 18th Bureau Tunnel Construction Co., Ltd., the first TBM hard rock boring machine independently developed by China has been used to achieve a special unfavorable geological environment that is more than 20 kilometers safe. It has exceeded 920 meters for 2 consecutive months. , And created a 1209.8-m-month domestic tunnel excavation record for the same tunnel, accumulated valuable experience and important technical data for the localization and mass production of TBM large-scale tunnel equipment.

After the water supply project for Jisong City of Jilin Province was completed in 2019, the annual average amount of diversion could reach 898 million cubic meters. The amount of water used for irrigation in the farmland could increase by 204 million cubic meters per year, and the newly added irrigated area was 482,000 mu, reducing groundwater consumption. With a volume of 283 million cubic meters, it has the combined benefits of improving agricultural irrigation and protecting the ecological environment.