In the heart of China’s coal mining industry, a groundbreaking approach is revolutionizing the extraction of ultra-thick coal seams with large dip angles, often referred to as “three soft” conditions. This innovative method, developed by Guirong He of Wangjiashan Coal Mine, part of Gansu Energy & Chemical Co., Ltd., is set to redefine the future of full-mechanized caving mining.
The challenges faced in mining “three soft” ultra-thick coal seams are immense. Traditional methods often result in equipment failure, roadway deformation, and frequent production disruptions. He’s research, published in the journal Meitan kexue jishu (translated as Coal Science and Technology), addresses these issues head-on, offering a new paradigm for the industry.
He’s approach focuses on the management of the arc section in full-mechanized caving faces. By strategically arranging transportation and return air roadways, and adopting an “arc-horizontal” transition arrangement for the working face, He has significantly reduced the need for frequent roadway repairs. “The key is to understand and control the movement of the roof and floor,” He explains. “By managing the arc section effectively, we can stabilize the working face and improve overall productivity.”
One of the standout features of He’s method is its emphasis on quantitative analysis and estimation. This data-driven approach allows for precise control of the working face’s production state and length, ensuring optimal equipment performance. “We’ve developed new methods for analyzing and calculating the sliding and adjustment of equipment,” He notes. “This has led to a more stable and efficient mining process.”
The commercial implications of this research are vast. The energy sector stands to benefit significantly from increased productivity and reduced downtime. With three successful full-mechanized caving faces already mined using this technology, the potential for widespread adoption is clear. This could lead to more efficient extraction of coal reserves, reduced operational costs, and enhanced safety for mining personnel.
The impact of He’s work extends beyond immediate commercial gains. It sets a precedent for future developments in mining technology, emphasizing the importance of theoretical analysis combined with practical engineering solutions. As the industry continues to evolve, this approach could pave the way for even more innovative methods of coal extraction.
The publication of He’s research in Meitan kexue jishu underscores its significance within the scientific community. The journal, known for its rigorous peer-review process, has recognized the potential of this technology to transform the mining landscape. As the energy sector looks to the future, He’s contributions offer a beacon of progress, guiding the way towards more efficient and sustainable coal mining practices.
