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用不能回收利用的新型复合材料研制检查井井盖早在50年代已开始，最初是为了节约钢铁，曾用钢筋混凝土，竹筋混凝土等材料制造井盖，但由于其重量大，开启不方便，未被广泛采用。近几年来对纤维混凝土、维纤增强树脂等新型材料的开发应用，已有一些单位将其用于制作检查并井盖
The development of inspection well covers with new composite materials that could not be recycled has already started in the 1950s. It was originally designed to save steel. The former had been made of reinforced concrete, bamboo reinforced concrete and other materials. However, due to its heavy weight, the opening was not convenient. broadly used. In recent years, the development and application of new materials such as fiber reinforced concrete and fiber-reinforced resin have been used by some organizations to make inspections and covers.