On the morning of March 31, the DZ823 and DZ838 open TBMs jointly built by Yanchang Petroleum Group, China Coal No. 3 Construction, China Railway 15th Bureau and China Railway Construction Heavy Industry Co., Ltd. rolled off the assembly line in Changsha Second Industrial Park of China Railway Construction Heavy Industry. The off-line of these two equipment marks the first time that open TBM has been used in the construction of long-distance slopes in coal mines, setting a precedent for the use of open TBM in inclined shafts in coal mines.

Guests at the conference unveiled the DZ823 open TBM

Guests at the conference unveiled the DZ838 open TBM

At the ceremony, Feng Hua, deputy general manager of Shaanxi Yanchang Petroleum and Mining Co., Ltd., delivered a speech and announced that the equipment was offline. Wen Fucheng, deputy general manager of China Coal Third Construction (Group) Co., Ltd., deputy general manager of China Railway 15th Bureau Group Co., Ltd., Lin Zhengqiu, General Manager of Central China Regional Headquarters, Cheng Yongliang, Deputy Secretary of the Party Committee and General Manager of China Railway Construction Heavy Industry, delivered speeches successively, Wu Zhi, General Manager of Mine Equipment R&D and Operation Center of Railway Construction Heavy Industry presided over the ceremony, China Railway Construction Heavy Industry secondary consulting Liu Haihua, China Coal Xi’an Design Project More than 40 guests from China Railway Fourth Survey and Design Institute Group Co., Ltd., China Coal Shaanxi Zhongan Project Management Co., Ltd., China Construction News and other units attended the ceremony.

Feng Hua, deputy general manager of Shaanxi Yanchang Petroleum and Mining Co., Ltd., delivered a speech and announced the equipment is offline

Speech by Lin Zhengqiu, Deputy General Manager of China Railway 15th Bureau and General Manager of Central China Regional Headquarters

Wen Fucheng, Deputy General Manager of China Coal No. 3 Construction, delivered a speech

Cheng Yongliang, Deputy Secretary of the Party Committee and General Manager of China Railway Construction Heavy Industry, delivered a speech

Wu Zhi, General Manager of Railway Construction Heavy Industry Mining Equipment R&D Operation Center presided over the ceremony

The excavation diameter of DZ823 and DZ838 open TBM is 7.13m, the length of the whole machine is about 130m, and the installed power is 3800kw. The project is divided into two tunnels, the main inclined shaft and the auxiliary inclined shaft. The interval length is 5.3km, and the slope is 6 degrees. It has the characteristics of good construction safety, fast excavation speed, high quality of roadway, and environmental protection.

The two equipment off the assembly line this time are the country's first set of open coal mine inclined shaft TBM, which will be used in the construction of the main and auxiliary inclined shafts of the Cocoa Mining Industry. China Railway Construction Heavy Industry fully learns and absorbs the construction technology of the coal industry, fully understands customer needs, combines the geological conditions of the Cocoa Coal Mine and the rich construction and technical experience of China Railway Construction in the past, and is equipped with a soil improved foam system and a large-scale inclined well drainage system , A series of targeted designs such as bolting rig support system, steel arch assembly system, spray mixing system, panel-type hard rock cutter head with small aperture ratio, etc., will effectively solve the weakness of surrounding rock and mudstone cutter head in coal mine area , Inclined shaft, reverse slope drainage, large support capacity and other construction problems, while meeting the requirements of the whole machine coal safety, providing effective guarantee for safe and efficient tunneling production, it is the intelligent frontier that China Railway Construction Heavy Industry has integrated with shield manufacturing technology for many years. equipment.

Before the off-line ceremony, China Railway Construction Heavy Industry, Yanchang Petroleum, China Coal No. 3 Construction, China Railway 15th Bureau and other units held technical seminars, and visited the digital command and monitoring center, digging-anchor integrated machine and cantilever in the second industrial park of China Railway Construction Heavy Industry. The roadheader production line has laid a solid foundation for follow-up cooperation.

The successful roll-off of open TBM in inclined shafts of coal mines for the first time in China not only marks the further maturity of China Railway Construction Heavy Industry’s intelligent TBM customized development level for different geological conditions and projects, but also the Yanchang Petroleum Group, China Coal No. 3 Construction Co., Ltd. and China Railway No. 10 The Fifth Bureau and China Railway Construction Heavy Industry Co., Ltd. are a good start for sincere cooperation in the field of TBM. The equipment not only fills the gap in the open TBM construction of inclined shafts in domestic coal mines, but also leads the transformation of construction methods in the development of rock tunnels in the coal industry, and promotes the improvement of the level of intelligent equipment in the coal industry.Editor/Xing Wentao