Tunnel inspection well with draining and floating resisting functions

The invention discloses a tunnel inspection well with draining and floating resisting functions. The tunnel inspection well comprises an inverted arch filling layer, a tunnel inverted arch and a center draining pipe arranged in the inverted arch filling layer. An inspection well body is formed in the inverted arch filling layer. The inspection well body passes through the tunnel inverted arch in depth. Draining holes are reserved in an inspection well bottom plate of the inspection well body. Overflow pipes are inserted into the draining holes. The side wall of the inspection well body communicates with the center draining pipe. The tunnel inspection well is applicable to railway tunnel engineering in water-rich sections such as faults and karst development sections, the situation that due to the fact that base water pressure in a tunnel is too high, a ballastless track arches up can be effectively prevented, and safe operation of a railway is guaranteed. The tunnel inspection well has the beneficial effects