en.Wedoany.com Reported - On April 17, the "Pioneer" mining hard rock tunnel boring machine (TBM), jointly developed by China's Henan Zhengzhou Coal Group's Gaocheng Coal Mine and China Railway Equipment, was successfully launched at the China Railway Intelligent High-end Equipment Industrial Park. As the first hard rock TBM tunneling project for Zhengzhou Coal Group, this equipment boasts an excavation diameter of 5.03 meters and is custom-designed for the complex geological conditions of the bottom drainage roadway in Gaocheng Coal Mine's 33 mining area.

The "Pioneer" hard rock TBM possesses the operational capability to adapt to steep gradients of ±20 degrees and a small horizontal turning radius of 80 meters. After deployment, it will effectively address the long-standing issue of tight mining sequence replacement at Gaocheng Coal Mine, significantly improving rock roadway excavation efficiency and intrinsic safety levels.

This hard rock TBM will also contribute to the stable release of Gaocheng Coal Mine's 1.5 million tons per year production capacity. This joint development project has accumulated valuable engineering experience for the application of mining hard rock TBM technology under complex geological conditions. Gaocheng Coal Mine has made new progress in innovating rock roadway excavation techniques.

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