Anti-settling manhole cover structure and damaged manhole cover repairing or replacing method

Abstract

The invention provides an anti-settling manhole cover structure and a damaged manhole cover repairing or replacing method. The anti-settling manhole cover structure comprises a seat slurry body and a manhole cover body, wherein the seat slurry body is disposed at the edge of a wellhead of a shaft, the manhole cover body covers the wellhead of the shaft, and the edge of the manhole cover body is connected with the seat slurry body; and the seat slurry body is made of phosphorus magnesium materials by pouring. The damaged manhole cover repairing or replacing method includes the steps of prefabricating the manhole cover body and an annular well ring, excavating a cover groove, laying a leveling layer, successively placing the well ring and the manhole cover body and pouring a seat slurry layer to complete installation construction. By adopting the technical scheme, the cover groove is connected with the well ring and the manhole cover body by using phosphorus magnesium mortar, so that the manhole cover body installation structure has the advantages such as high strength and compression resistance, the settlement of the manhole cover body can be effectively avoided, the service life of the manhole cover body is prolonged, and it is ensured that the manhole cover body can be used safely and stably; and in addition, the phosphorus magnesium materials have a short setting time, so that the construction period of the manhole cover body installation or replacement is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of transportation facilities, in particular to an anti-subsidence manhole cover structure and a method for repairing or replacing a damaged manhole cover. Background technique [0002] Manhole covers are used to cover deep road wells to prevent people or objects from falling. As a part of urban facilities, manhole covers are closely related to the work and life of citizens. The common well cover installation structure in the prior art generally includes a well cover body and a base slurry, the base slurry is arranged on the edge of the wellhead of the shaft, and the base slurry is poured with building materials such as concrete, asphalt or ordinary mortar. The bonding strength is not high. When the subsurface soil fluctuates, the fluctuations in the external environment are transmitted to the subsurface soil, or because the manhole cover is used for too long, the installation structure of the manhole cover b...

AI Technical Summary

Problems solved by technology

The common well cover installation structure in the prior art generally includes a well cover body and a base slurry, the base slurry is arranged on the edge of the wellhead of the shaft, and the base slurry is poured with building materials such as concrete, asphalt or ordinary mortar. The bonding strength is not high. When the subsurface soil fluctuates, the fluctuations in the external environment are transmitted to the subsurface soil, or because the manhole cover is used for too long, the installation structure of the manhole cover body is easily damaged when it is repeatedly rolled by passing vehicles. , resulting in the subsidence of the manhole cover body toward the ground. Due to the subsidence of the manhole cover body, it is easy to cause traffic safety accidents on the road

And in the prior art, when ordinary mortar is used to pour the seat slurry, due to the long time required for the ordinary mortar to solidify, the installation and construction of the manhole cover body will take a long time, and when replacing the damaged manhole cover body, Due to the long time required for ordinary mortar to solidify, the replacement construction period also increases accordingly, and it is very easy to cause traffic congestion on the road when the manhole cover body is replaced or repaired.

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