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沿空留巷作为一种无煤柱护巷技术是合理的开发现有煤炭资源、提高煤炭资源采出率的一种有效途径。根据对现有无煤柱开采系统的分析,沿空留巷一般可使矿井回采率提高10%以上,巷道掘进率和巷道维修费可降低30%左右,有些矿井降低的幅度高达40%以上。沿空留巷技术的研究和推广对中国煤炭工业的发展具有积极而重要的意义,不管现在还是将来,该技术都是中国煤炭资源开采的重要技术发展方向。
Gob-side entry retaining as a kind of pillar-free roadway protection technology is an effective way to develop existing coal resources and improve the recovery rate of coal resources. According to the analysis of the existing non-coal pillar mining system, gob-side entry retaining can generally increase the recovery rate of coal mines by more than 10%, the roadway driving rate and roadway maintenance costs can be reduced by about 30%, and some mines can reduce by as much as 40% or more. The research and popularization of gob-side entry retaining technology have positive and important significance for the development of China’s coal industry. This technology is an important technical development direction for the exploitation of coal resources in China now and in the future.