分层开采与综放开采工作面滞后支承压力变化规律是，随着采高的增大，工作面滞后支承力的距离加大，垂直应力集中系数差别不大。
The lag distance of abutment pressure behind working face increases, but the convergence coefficient of vertical stress doesn't change obviously with the increase of mining height.
实践证明改进后的输送机可靠性高，与综放设备配套使用，取得了较好的经济效益和社会效益。
The improved conveyer has a high reliability proved practically, obtains good economic returns and social benefits used with corollary equipments of the full-mechanized caving coal working face.
综放开采由于采高的加大，导致采场前方顶煤中瓦斯渗透性与分层开采有较大的差异。
During mechanical longwall top coal mining, the gas permeability in top coal ahead of working face has bigger difference compared with slice mining due to the increase of mining height.
这一通风系统可为其他高瓦斯综放面安全高效开采提供了一条新的技术途径。
The ventilation system provides a new method to realize the safe and efficient mining of high gas longwall mining with sublevel caving.
实践证明，采用高水速凝材料充填空巷是综放工作面快速、安全、经济地推过空巷的有效途径。
Successful practice shows the application of such backfill material to abandoned roadway is a good solution to ensure the working face pass through abandoned roadway quickly, sa...
实践证明，采用高水速凝材料充填空巷是综放工作面快速、安全、经济地推过空巷的有效途径。
Successful practice shows the application of such backfill material to abandoned roadway is a good solution to ensure the working face pass through abandoned roadway quickly, sa...
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