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过去我省隧洞顶拱衬砌多半使用人工作业,不仅费工,而且劳动强度大,速度也慢。以后在洪门水电站引水洞曾采用过国产C-252型电动混凝土泵,大大减轻了繁重的体力劳动,但电动混凝土泵因其本身的体积大,重量有7～8吨,在隧洞中移动和安装都很不便,故仅适用于断面大和洞线短的隧洞中。由于罗湾水电站洞径狭窄,洞线长,故隧洞衬砌采用自制的风动混凝土泵。因风动混凝土泵具有构造简单,机体坚固,体积小,重量轻等优点,故移动方便,运用灵活,运行也比较可靠,特别在施工工作面较窄的地方,较之电动混凝土泵优越得多。其次是遇堵管时容易察出,可以迅速处理。主要缺点是耗风量大,因而电能耗量较
In the past, most of the province’s tunnel roof arch lining used artificial work, not only labor-intensive, but labor-intensive, slow speed. Later in Hongmen hydropower station diversion hole had used domestic C-252 electric concrete pump, greatly reducing the heavy manual labor, but the electric concrete pump because of its large size, weight of 7 to 8 tons in the tunnel to move and install Are very inconvenient, it is only applicable to large and short tunnel cross-section hole. Due to the narrow tunnel diameter and long tunnel length, the tunnel lining of the tunnel adopts self-made wind-driven concrete pump. Due to its advantages of simple structure, solid body, small size and light weight, the air-driven concrete pump has the advantages of convenient movement, flexible operation and reliable operation, and is more advantageous than the electric concrete pump especially in places where the working face is narrow . Followed by case of plugging easy to detect, you can quickly handle. The main disadvantage is the large amount of air consumption, and thus more energy consumption