The application of ductile iron manhole covers has played a very important role in our urban municipal management. The emergence of many different types of ductile iron manhole covers has brought great convenience to our daily life. However, after a period of use of ductile iron manhole covers, there will be a problem, that is, the problem of sinking during use. Let me explain this problem in detail for you.
Among them, the reason for the sinking in the application of ductile iron manhole covers is that the manufacturer has a low limit in the design of the ductile iron manhole cover and the structure design around the well, and the backfill soil around the well and the structural layers on the ground around the well. There are key reinforcement design plans. If there are a large number of overweight and overweight vehicles in urban traffic, it will cause damage to the sewer well and its surroundings.
Secondly, it may be due to the lack of planning and layout of pipeline projects in the field of passing motor vehicle lanes. Or the structure of the well and the surrounding of the well is affected by its own weight and the load of the vehicle, so the subsidence will inevitably be different.
The above is one of the reasons for the sinking of our ductile iron manhole covers in use, but there are strict specifications in the whole process of manhole cover installation, and this kind of situation will not happen under normal circumstances.
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