By mining in Chengzihe contain coal group Lishu Coal Mine,make an gas study of gas geology,grasp the features of seam gas and the law of pouring out and play an positive action in cutting and mining.

• 通过对梨树煤矿城子河含煤组的煤层开采,进行瓦斯地质研究,掌握了煤层瓦斯赋存特征和涌出规律,在煤巷掘进及煤层开采期间,有针对性地采取有效措施起到了积极的作用。