Large storehouse of powder material -- large steel storehouse (storehouse): it is an important production facility in the building materials, electric power, traffic and other industries. Such as raw materials warehouse, cement warehouse, coal ash, stone powder warehouse, coal and so on. In the actual production process, because of the influence of water, powder and adsorption, the steel plate library has greatly reduced the stacking, homogenizing and storage functions of the material. It shows that the abnormal storage conditions such as viscous storage, core pulling, collapsing and collapsing, as well as the difference between the theoretical storage capacity and the actual storage capacity, etc., have a great impact on the production process. Some enterprises produced steel silo, the discharge is not normal; some of the output can not meet the design requirements. Some enterprises even installed cement steel warehouse, too much hardening, had to cut the steel warehouse open, with excavators to clean cement.