Duct piece adjacent connection block for resisting upward floating of duct piece

The utility model relates to the technical field of civil engineering, and discloses a duct piece adjoining block for resisting floating of duct pieces, which comprises a duct piece adjoining block, a groove is arranged on the outer side of the duct piece adjoining block, a bag body is accommodated in the groove, and a second grouting hole is arranged at the bottom of the groove and is used for conveying grouting bodies to the bag body. During grouting, the bag body is filled with grouting body, expands, deforms and protrudes out of the groove so as to make close contact with a rock-soil layer on the periphery of the duct piece. According to the duct piece adjacent block capable of resisting floating of the duct piece, the two grouting holes are formed in the duct piece adjacent block, the first grouting hole has the same function as a traditional grouting hole (serving as a hoisting hole and also serving as a grouting hole), the second grouting hole conducts grouting on the rubber bag independently, the inte