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本钢某转运站皮带输送机出口门洞，由于技改工艺要求，需扩高４００ｍｍ，钢筋混凝土雨篷也必须相应地上移４００ｍｍ。按常规，应先将墙体加固，把原雨篷凿除，扩高门洞后再重新浇筑新雨篷。如果这样，需耗费新雨篷工程材料，设置施工设施，更主要的是工期长，影响技改进...
In the exit doorway of the belt conveyor of a transfer station in Benxi Steel, due to technical upgrading process requirements, it is necessary to increase the height by 400mm, and the reinforced concrete canopy must also be moved upwards by 400mm. As a rule, the walls should be reinforced first, the original awnings removed, and the new awnings re-cast after opening the door openings. If this is the case, new awning engineering materials need to be expended and the construction facilities should be set up. The main reason is that the construction period is long, and the technical improvement will be affected...