Recently，China Railway Construction Heavy Industry Co., Ltd. Diameter 4.53m open miningTBM“Gui Dun 2”In Zhangji Coal Mine in Huainan, it has created a monthly footage of 736 meters.，Following Xieqiao Coal Mine“Guidun No.1”Monthly footage of 616 meters to refresh the record of the whole series of shield machine operation line in Huainan mining area、Pansan Coal Mine“Gui Dun three”To create a medium-diameter mine with a monthly footage of 636 metersTBMAfter the national record，Break medium diameter mining againTBMNational record。

Equipment origination site

It is reported that，“Gui Dun 2”Launched in October 2023，In December, it won the highest monthly footage record of the whole series of products of Huainan Mining Group Coal Company with a monthly footage of 736 meters.，And set a new national record。

“Gui Dun 2”It is the geological condition of Zhangji Coal Mine by Railway Construction Heavy Industry and Huainan Mining Group.、Suck“Guidun No.1”The third generation 4 built by equipment experience.5-meter-level open type mineTBM。It is equipped with improved advanced drilling equipment.、Improved roofbolter、Anti-drop support shoe structure、Scraper with multiple slag tapping modes interchanged/Belt conveyor and other advanced technologies，The whole machine meets the requirements of coal safety，It provides an effective guarantee for the safe and efficient excavation of the roadway.。During trial driving，The on-site service team of China Railway Construction Heavy Industry Co., Ltd. shall coordinate with the mine party to organizeTBMNormative maintenance of each system，For“Gui Dun 2”Safe Operation Escort。

It is understood that，Used in the mineTBMDiameter up to 4-After 5m level，With the decrease of roadway stability,、Increase in the amount of support，The difficulty of construction will be further increased.。China Railway Construction Heavy Industry Co., Ltd. has been committed to systematicness.、Subversive independent innovation，Mine equipment developed for this projectTBM，Not only in line with Huai Mining Coal CompanyTBMDiameter standardization requirements，On the premise of meeting the needs of customers for bolt support，WillTBMExcavation section compressed to 4.5 m limit size，The construction cost is greatly saved.。

Good news from customers（↑Click to view larger image↑）

“Guidun No.1”“Gui Dun 2”“Gui Dun three”Continuously break Huainan mining area and medium diameter mines in ChinaTBMTunneling records，Make Tiejian Heavy Industry MineTBMThe technical advancement and reliability of the products have been strongly verified again.。During equipment tunneling，China Railway Construction Heavy Industry Co., Ltd. will adhere to customer-centered、“One mine, one policy”A customized approach，Dedicated to provide customers with“Nanny-style”Service，Ensure the safe and efficient operation of equipment in the whole process，Write a new chapter of cooperation and development with coal mine customers。