Mobile dust blocking, trapping and oxygen supplying device and method based on tunnel construction operation

The invention discloses a movable type dust blocking, trapping and oxygen supplying device and method based on tunnel construction operation, a main body frame structure comprises a fixed baffle, and a hollow channel is formed in the fixed baffle in a penetrating mode; the oxygen supply structure is fixedly connected to the main body frame structure and comprises an oxygen supply input end and an oxygen supply output end which are communicated with each other, and the oxygen supply input end is communicated with oxygen supply equipment; the movable bearing structure is fixedly connected to the bottom of the main body frame structure; the dust collection structure comprises a dust collection input end and a dust collection output end which are communicated with each other, the dust collection input end is fixedly connected to the movable bearing structure, and the dust collection output end is communicated with dust collection equipment; the floating dust blocking structure is arranged in the hollow channel in