井蓋有哪些分類呢？

What are the classifications of manhole covers?

　　井蓋作為交通道路的重要設施，在我們的生活中非常常見。首先，它具有防護功能，可以維護道路井下的各種電纜管線；其次還有排水功能，可以排除地面多余的積水與污水。

As an important facility for transportation, manhole covers are very common in our daily lives. Firstly, it has protective functions and can maintain various cable pipelines underground on roads; Secondly, there is a drainage function that can remove excess water and sewage from the ground.

　　除此之外，井蓋還具有裝飾功能，尤其是一些藝術井蓋，可以對表面進行藝術設計，這類井蓋的觀賞性更高，被賦予了獨特的意義，甚至在許多城市，藝術井蓋已經成為了這座城市的標簽。那么井蓋都有哪些種類呢？小編跟大家詳細的介紹一下～

In addition, manhole covers also have decorative functions, especially some artistic manhole covers, which can be used for artistic design on the surface. This type of manhole cover has a higher ornamental value and is given a unique meaning. Even in many cities, artistic manhole covers have become the label of this city. So what are the types of manhole covers? Let me give you a detailed introduction

　　1、鑄鐵井蓋

1. Cast iron manhole cover

　　鑄鐵井蓋可以分為球墨鑄鐵和灰口鑄鐵兩種，鑄鐵井蓋擁有一定的承載能力。鑄鐵井蓋本身就具有很高的回收價值，這也是許多城市經常丟井蓋的原因之一。但是現在許多廠家都已經設計了帶有防盜鎖的鑄鐵井蓋，更加實用，但是成本也會隨之增加。

Cast iron manhole covers can be divided into two types: ductile iron and gray cast iron. Cast iron manhole covers have a certain load-bearing capacity. Cast iron manhole covers themselves have high recycling value, which is also one of the reasons why many cities often lose manhole covers. But now many manufacturers have designed cast iron manhole covers with anti-theft locks, which are more practical, but the cost will also increase accordingly.

　　2、水泥井蓋

2. Cement manhole cover

　　相較于其他類型的井蓋，水泥井蓋的剛性更強，脆性大，主要是在水泥中添加鋼架或者摻雜鋼纖維制作而成。不過水泥井蓋不耐酸堿腐蝕，容易發生老化，承載能力一般，現在道路交通設施中，水泥井蓋已經應用的不多了。

Compared to other types of manhole covers, cement manhole covers have stronger rigidity and greater brittleness, mainly made by adding steel frames or doping steel fibers in cement. However, cement manhole covers are not resistant to acid and alkali corrosion, are prone to aging, and have average bearing capacity. Nowadays, cement manhole covers are not widely used in road traffic facilities.

　　3、硅塑井蓋

3. Silicone plastic manhole cover

　　硅塑井蓋是一種復合井蓋，復合了粉煤灰、廢塑料、廢橡膠等多種材料，復合型的材質導致硅塑井蓋的強度并不高，而且容易發生老化，冬天變得脆，夏天變得軟，在高溫條件下很難開啟維護。

Silicone plastic manhole cover is a composite manhole cover that combines various materials such as fly ash, waste plastic, and waste rubber. The composite material results in low strength of the silicone plastic manhole cover and is prone to aging. It becomes brittle in winter and soft in summer, making it difficult to open and maintain under high temperature conditions.

　　4、高分子模壓井蓋

4. Polymer molded manhole cover

　　這是一種新型井蓋，這種井蓋的荷載性、防盜性、經濟性都是比較出色的，而且和耐腐蝕性、裝飾性很好的結合在了一起。目前，該種類型的井蓋生產工藝逐漸成熟，是一種很有希望的可以代替球墨鑄鐵井蓋的復合材料井蓋。但是不可避免的，在成本上，會高出球墨鑄鐵井蓋很多。

This is a new type of manhole cover, which has excellent load-bearing, anti-theft, and economic performance, and is well combined with corrosion resistance and decoration. At present, the production process of this type of manhole cover is gradually maturing, and it is a promising composite material manhole cover that can replace ductile iron manhole covers. However, it is inevitable that the cost will be much higher than that of ductile iron manhole covers.

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