Zhuojin Pipe Fitting Co., LtdMine Ventilation System Adjustment and Economic Effect Analysis
Literature Overview
This 1999 publication by Sun Feng and Bi Dechun from Fushun Institute of Technology examines the adjustment and renovation of the Dong-San ventilation system at Shen Village Mine under the Yiluo Coal Mine Group. Published in the journal "Coal Mine Safety" (Volume 30, Issue 1, pages 8-9), the paper documents a practical engineering case study of ventilation system optimization with quantified economic outcomes. The paper falls under the Chinese classification TD724, which covers mine ventilation engineering. While the paper does not focus on steel pipe manufacturing per se, mine ventilation systems rely heavily on steel ductwork, ventilation pipes, and associated piping infrastructure, making this case study relevant to engineers involved in mine ventilation piping design and installation.
Core Technical Content
The paper describes the systematic adjustment of the ventilation system in the Dong-San area of Shen Village Mine. The key engineering challenge was that the original ventilation system had become inefficient due to changes in mining operations, increased air demand from new working faces, and accumulated resistance from aging ductwork and piping. The authors document the following approach:
- Systematic assessment of the existing ventilation network — identifying resistance bottlenecks, airflow distribution imbalances, and areas where ventilation piping or ductwork was undersized or improperly configured.
- Redesign of ventilation paths — rerouting airflow through modified ventilation structures, including new ventilation pipes, air curtains, and wind doors.
- Installation of new ventilation equipment — including booster fans and ventilation ducts that required steel pipe and duct fabrication.
- Economic evaluation — quantifying the cost of the renovation against the savings in energy consumption, reduced ventilation equipment demand, and improved safety outcomes.
The paper emphasizes that the adjustment followed a PDCA (Plan-Do-Check-Act) cycle, where the initial plan was based on ventilation network calculations, the execution involved physical modification of the ventilation infrastructure, the check phase involved measuring actual airflow and resistance, and the act phase involved fine-tuning based on measured results.
Engineering Practice Insights
From the perspective of steel pipe and fitting engineering, mine ventilation systems present unique challenges that are worth noting:
| Parameter | Typical Specification | Engineering Consideration |
|---|---|---|
| Ventilation duct diameter | 800–1400 mm | Large-diameter steel ductwork requires special forming and welding techniques |
| Duct material | Q235 or Q345 steel plate | Corrosion resistance is critical in high-humidity mine environments |
| Connection method | Flanged or bolted lap joints | Must allow for thermal expansion and vibration isolation |
| Design air velocity | 4–8 m/s | Excessive velocity causes erosion and noise; insufficient velocity causes dust accumulation |
| System static pressure | 1000–5000 Pa | Determines fan selection and duct thickness requirements |
The economic analysis in the paper demonstrates that ventilation system optimization can yield significant returns. The renovation reduced the number of required ventilation fans, lowered electricity consumption, and extended the service life of ventilation piping infrastructure. For steel pipe engineers, this highlights the importance of designing ventilation ductwork with long-term serviceability in mind, including provisions for future system modifications.
Key Reflections
The paper, while focused on ventilation system engineering, underscores a broader principle applicable to all industrial piping systems: system-level optimization often yields greater economic returns than component-level improvements. When designing ventilation piping, engineers should consider not only the immediate functional requirements but also the potential for future system modifications, the ease of inspection and maintenance access, and the long-term economic impact of material and design choices. The case study demonstrates that a well-planned ventilation system adjustment can improve safety, reduce energy costs, and extend asset life simultaneously.