A Review of Instability Mechanisms and Control Technologies for Gas Drainage Boreholes in Soft Coal Seams in China
In China, soft coal seams make up over 50% of all coal seams. The instability and failure of boreholes in soft coal seams are key factors that result in an average gas drainage rate of less than 30% in China, which has become a “bottleneck” for safe and efficient coal mining. Based on 247 articles from the Web of Scien...