Manhole cover is a kind of common public facilities, its shadow pervades every corner of the big city and becomes an indispensable part. In real life, there are many problems related to manhole covers. The safety risks of manhole covers have not been resolved for many years, and the most incomplete stage of road construction is the inspection of manhole covers for various pipelines, and the connection between manhole covers and the road surface. Many potential safety hazards have been buried for the construction quality of pavement engineering, ranging from damage to the pavement, to inspection of manhole covers and large ground subsidence, resulting in traffic accidents. How to protect the manhole cover to prevent safety accidents?
1. When the foundation pit is constructed within the scope of pile clearing and wellhead structure reinforcement, it is forbidden to vibrate the pavement structure around the wellhead. The excavated raw materials should be piled up with the road surface protection, and the garbage should be removed immediately.
2. Cast-in-place concrete When pouring in-situ concrete, protective materials should be laid on the road around the wellhead to prevent cement mortar from polluting the road. Covering and sprinkling maintenance is adopted, and measures to protect the enclosure structure are adopted to prevent human factors from destroying the reinforced concrete or causing the manhole cover to be loosened.
3. Covering the wellhead for sewage inspection After the well wall is built, a temporary well cover is installed immediately for covering maintenance. Avoid engineering materials or dirt falling into the tube well to prevent accidental injury.
4. The manhole cover is installed along the slope. When it is necessary to relax the traffic, the surrounding of the manhole cover higher than the road surface should be selected in advance with pea stone concrete or asphalt along the slope to ensure safe driving.
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