China Railway Construction Heavy Industry Co., Ltd. Drilling and Blasting Tunnel Equipment Helps the Yangtze River Diversion and Hanjiang River Supplement Project to Achieve New Achievements

The other day，Railway Construction Heavy Industry Drilling and Blasting Tunnel Equipment Helps the Main Tunnel Excavation of the Main Line of the Yangtze River Diversion and Hanjiang River Diversion to Break Through 1000 Meters，The annual node target was achieved 4 days ahead of schedule.。

The water diversion project from the Yangtze River to the Hanjiang River is the follow-up water source project of the middle route of the South-to-North Water Diversion Project.，It is also the first start-up project of the follow-up project of the South-to-North Water Transfer Project.，The total length of the project is 194.8 kilometers，Diverting water from the Three Gorges reservoir area of the Yangtze River into the Hanjiang River，The terminal point is located at the Anle estuary on the right bank of the Hanjiang River downstream of the Danjiangkou Reservoir Dam.，The average amount of water diverted from the Yangtze River is 3.9 billion cubic meters.。The project started construction on July 7, 2022.，To give full play to the water conveyance potential of the Middle Route Project，Enhance the water resources allocation capacity of the Hanjiang River Basin，It plays an important role in further improving the stability of water supply in northern water receiving areas.，Yes“Fourteen five”It is an important step to build a national water network during this period.。

The length of the tunnel constructed by drilling and blasting method in the project of water diversion from the Yangtze River to the Hanjiang River is about 60.5 kilometers，The category of surrounding rock isⅢ、ⅣClass is the main one，The key and difficult points of construction are long-distance hard rock tunneling.、Hard rock rockburst、Fault fracture zone、High external water pressure、Water inrush, etc.，The requirements for high quality and high efficiency of equipment are particularly high.。Computerized rock drilling jumbo of China Railway Construction Heavy Industry、Wet spraying trolley、Anchor Rod Trolley、Complete sets of equipment such as arch trolley gather in the project of diverting water from the Yangtze River to supplement the Han River，It will contribute to the construction of this national project.。

June 2023，Application of Railway Construction Heavy Industry in the Main Tunnel of the Exit Section of the Fifth Hydropower Engineering Bureau of the General Trunk Line of the Water Diversion Project from the Yangtze River to the Hanjiang RiverZYS113 Fully computerized three-arm rock drilling jumbo is responsible for excavation、Anchor bolt process，Average drilling efficiency of trolley3.6 meters/Minute，The overbreak and underbreak of smooth blasting shall be controlled within 15cm.，The failure rate is low、Reliability up to 98.7%Above，It ensures that the average monthly footage is more than 150 meters.，Compared to non-intelligent equipment，In engineering quality、Schedule benefit、Safety and environmental protection have been significantly improved.，Average construction efficiency of equipment increased by 20 percent%，Reduction of operators by 30 percent%，To ensure the completion of the 2023 annual node target ahead of schedule。

For unfavorable geology，Railway construction heavy industry will be intelligent、Informatization is integrated into excavation、In the support line，It fully embodies wisdom.、Safe construction concept，Rock drilling jumbo、Wet spraying trolley、Arch frame trolley、Anchor Rod Trolley、Advanced equipment such as mixing stations will emerge in the construction of the project。

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