Structure for monitoring stability of tunnel construction landfill

The utility model relates to the technical field of tunnel construction, and discloses a tunnel construction landfill stability monitoring structure which comprises a supporting plate, a first fixing structure is arranged at the bottom of the supporting plate, a protective shell is arranged at the top of the supporting plate, and a second fixing structure is arranged on the outer surface of the protective shell. According to the utility model, during traditional tunnel construction, soil needs to be poured into a landfill site, the stability in the landfill site needs to be ensured before the soil is poured into the landfill site, and if the stability monitoring structure cannot be fixed, the monitored result can be influenced, and a first fixing structure is arranged below the supporting plate; according to the stability monitoring structure, the second fixing structure is arranged around the protective shell, and after the first fixing structure is completed, the whole structure can be vertically fixed in c