Hengfeng Liu

Title: Innovations of Hengfeng Liu in Coal Mining Recovery

Introduction

Hengfeng Liu is a notable inventor based in Jiangsu, China, recognized for his contributions to the field of coal mining recovery. With a focus on innovative methods that enhance efficiency and safety, Liu has developed techniques that address the challenges faced in mining operations, particularly in ecologically sensitive areas.

Latest Patents

Liu holds 2 patents, showcasing his expertise in developing advanced recovery methods. His latest patents include:

1. **Method for recovering room-type coal pillars by cemented filling of reserved roadways** - This method provides a solution for the safe and efficient recovery of left coal pillars in room-type mining faces, particularly in fragile ecological systems like those found in western China. By constructing reserved roadways in adjacent rows of room-type goafs and interconnecting them with coal pillar roadways, this innovative approach maximizes the recovery ratio of coal resources while reducing the workload of roadway excavation.

2. **Method of recovering room-and-pillar coal pillar by using external replacement supports** - This method involves forming a cement material wall around a coal pillar, allowing for the mining of coal resources while supporting the overlying stratum. After the mining process, the goaf region is filled with cement material, ensuring stability and enabling the recovery of the single pillar.

Career Highlights

Hengfeng Liu is affiliated with the China University of Mining and Technology, where he continues to contribute to research and innovation in mining technologies. His work is instrumental in advancing methods that not only improve resource recovery but also prioritize ecological considerations.

Collaborations

Liu collaborates with esteemed colleagues such as Nan Zhou and Meng Li, enhancing the impact of his research through teamwork and shared expertise.

Conclusion

Hengfeng Liu's innovative approaches to coal mining recovery reflect his commitment to improving efficiency and safety in the industry. His patents represent significant advancements that address both resource management and environmental concerns.