针对目前我国煤矿近距离下层煤的实际开采状况,对下层煤的工作面进行了合理优化设计,并在实际中进行合面开采尝试,表明通过下层煤工作面合面开采技术进行开采,能够有效地减少工程的挖掘量,不仅能够降低巷道支护的成本,而且大大缩短了工作面的维持时间。 Aiming at the actual mining conditions of coal in the lower coal mine at present in our country, a reasonable optimization design is made for the working face of the coal in the lower coal mine and a face-to-face mining experiment is carried out in practice to show that mining can be effective through face coal mining technology of the lower coal face To reduce the excavation of the project, not only can reduce the cost of roadway support, but also greatly reduced the maintenance of the work surface.