Spring returns to all things Su，Struggle is just in time。In the mine of Shaanxi Coal Group，The main haulage gate of super-large mining height working face is accompanied by the clangorous pace of tunneling equipment.，It is advancing rapidly at an average daily footage of more than 40 meters.。Through the unremitting efforts of Railway Construction Heavy Industry and Shaanxi Coal Group，Equipped with the highest daily footage all the way“Wild wind”To 53 meters，This marks the successful application of the world's first complete set of 40 square meters super-large section roadway rapid excavation and anchoring equipment.。

Main haulage crossheading of super-large mining height working face of Shaanxi Coal Group

The width of the main conveying gate is 7.5 meters，Height 5.5 meters，The section is 41 square meters.，It is the first main haulage crossheading in China with a mining height of 10 meters.，The section size of the gate is the largest in China.。Based on the super-large span of the roadway,、Characteristics of super large section，Surrounding rock control during construction、Support design、Tunneling process、Equipment adaptability、Safe and efficient、Intelligent construction with fewer people is facing unprecedented challenges.。China Railway Construction Heavy Industry Co., Ltd“Construction method first、Intelligent leading”Core competitive advantage，Starting from the deformation failure mechanism and stability control technology of coal roadway with super-large mining height，Innovative Research on Roadway Tunneling in Super-high Mining Face-Branch-Transportation and cooperative operation technology，Customized development of the world's first set of 40 square meters of super-large section roadway rapid excavation and anchoring equipment。

Railway construction heavy industry 40 square meters super-large section roadway rapid excavation anchor complete equipment

The equipment is the largest set of intelligent rapid digging and anchoring equipment in the world.，Initiative 7.5m oversize width single straight type spiral pick+Heavy duty roller with rotary vane，Cutting power increased from 270 kW to 540 kW，Cutting capacity of 30 tons per minute，Realize one-time cutting and forming of roadway；Constructed“Anchor digging synchronization、Space-time synergy、Parallel operation”Digging and anchoring integrated process flow，Equipped with 13 units 3.6 meters/2.6-meter large-stroke multi-degree-of-freedom roofbolter，Achieve one-time positioning、Partition parallel operation，And that support range is expanded.，And that support efficiency is improved.，And that support quality is ensure.。Complete machine matching high efficiency、High wear resistance、High-reliability conveying system，Capacity up to 36 tons per minute。

Equipment working status

2023，China Railway Construction Heavy Industries will continue to insist“Take the change of construction method as the traction，Take the core equipment as the first March，From providing a single product to providing a total solution”Industry development ideas，Continue to promote the research and development of high-end intelligent products，To contribute to the high-quality development of the coal industry.。