为了改善矿山井下的作业条件,必须搞好通风工作,特别是要搞好工作面的局部通风。目前广泛使用的涂胶或涂塑玻璃纤维风筒,由于贮存、搬运、安装、拆卸和修复比较困难,占据工作面的空间大,应用范围受到限制。据报道,国外在竖井、独头平巷和斜井掘进以及无底柱崩落法采矿的进路掘进和回采作业中,已广泛使用了一种弹性风 In order to improve the operating conditions of mine underground, we must do a good job of ventilation work, especially to improve the local ventilation of the work surface. Currently widely used coated or coated glass fiber duct, due to storage, handling, installation, disassembly and repair more difficult to occupy the face of large space, the application is limited. It has been reported that a flexible wind has been widely used abroad for excavation and recovery operations in the shaft mining, single-headed alleyways, inclined shaft excavation and pillarless caving mining