Underground powerhouse vault

The utility model discloses an underground powerhouse vault which comprises a building face, a bearing block is arranged in the building face, a supporting rod is fixedly connected to the top of the bearing block, a matching plate is fixedly connected to the top of the supporting rod, and a first pouring layer is arranged on the top of the matching plate. A first steel bar layer is arranged in the first pouring layer, a reinforcing layer is arranged on the outer surface of the first pouring layer, a second pouring layer is arranged on the outer surface of the reinforcing layer, a second steel bar layer is arranged in the second pouring layer, and an underground layer is arranged on the outer surface of the second pouring layer. And a plurality of grouting grooves are formed in the underground layer, a third pouring layer is arranged in the grouting grooves, and the grouting grooves are evenly distributed with the circle center of the reinforcing layer as the axis, so that the vault is firmer. 本实用新型公开了一种地下厂房拱顶