采用无煤柱护巷技术,取消了区段间的煤柱,使采区煤炭资源的回采率明显提高。采用沿空留巷使采面的掘进工程量减少,直接改善了采掘的接替关系,缓和了采掘接替紧张的局面。采用沿空留巷时每米巷道的工资费用与掘进巷道时 Adopting non-coal pillar protection roadway technology, the pillars between sections were canceled, so that the recovery rate of coal resources in the mining area increased obviously. The use of gob-side entry retained less digging works for the mining face, directly improving the succession of mining and easing the tension of the mining. The use of gob-side entry roadway when the cost of wages and driving the tunnel