Recently, the world's first open-type rail-borne hard rock roadheader developed by CITIC Heavy Industries and Shanghai Research Institute of Coal Science and Engineering Group successfully tested here today. Prof. Wang Mengshu, academician of Chinese Academy of Engineering, tunnel and underground engineering expert, said that the successful research and development of the new Φ5 m open-type rail-borne hard rock roadheader has broken the monopoly of foreign technology in this field, led the development of domestic roadheader industry, Independent intellectual property rights of hard rock roadheader R & D platform.
According to reports, Hard Rock Tunnel Boring Machine (TBM) is a highly mechanized and automated large tunnel excavation complete set of mechanical , electronic , hydraulic, laser, control and other technologies. It has the advantages of high automation, fast construction, Safe and economical, not affected by the external climate and other construction advantages, is currently the most potential development of rock tunneling machinery and equipment. International TBM has been widely used in water conservancy and hydropower, mining, transportation, municipal administration, national defense and other projects, the technology is very mature. At present, the relevant research in China has just started, almost all hard rock boring machines in use are imported from abroad.
It is reported that the test hard rock tunneling machine is mainly used for railways, highways, subway tunnels and diversion tunnel construction grade IV stability rock. The total length of the equipment is about 200 meters and the total weight is about 800 tons. The minimum turning radius of 235 meters can be achieved. The maximum gradient of the tunnel is 9 °. One excavation stroke is 1.5 meters and the maximum thrust of the cutterhead reaches 9000 kN.
"Since then, China has its own intellectual property rights of hard rock roadheader, the price is only imported 1/2 of the price of similar products." Wang Meng Shu said that the product was able to successfully develop, from CITIC Heavy equipment has the advantage of excellent scientific research personnel, technicians Higher level of advantage.
It is reported that Φ5 m open type rail transport TBM transport and installation more convenient and open to ensure that the operation can be timely support, to prevent deformation after heading, "trackless" design makes the equipment as a tool, homework There is no need to lay the rails on the spot, which reduces the construction cost. It is estimated that in the next 5 to 10 years, the domestic market demand for hard rock roadheaders should be between 500-800 units and the market prospect is broad.
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