Optimization of Coal Mine Gas Extraction Technology and Economic Benefits Assessment
As the world's largest coal producers,China faces challenges in mining coal seams with high gas content and low permeability.This paper proposes an optimized underground mine gas extraction technology scheme tailored to these coal seam characteristics and evaluates its economic benefits.Through a case study of a high-gas mine in North China,the implementation of technologies such as variable frequency drive(VFD)pump stations,optimized drilling parameters and extraction processes,significantly enhanced gas drainage efficiency.The results show that by optimizing key parameters such as drill hole diameter,spacing,as well as extraction negative pressure and duration,the volume of gas extraction and economic returns can be substantially increased.
gas extractiontechnique optimizationextraction efficiency
万方数据
维普
