Study on the Shrinkage Error of Similar Material Simulation Experiment
Shrinkage error will impact the results obtained from the observation data when studying subsidence by the method of similar material simulation experiment. Using digital industrial close-range photogrammetry system in the experiment, high-precision observational data is collected. By comparative analysis on the subsidence of the points at different locations, we obtained the distribution law of shrinkage subsidence and horizontal movement which has great significance for the study on how to reduce the shrinkage error effectively.
Analysis of damage effect of mining velocity on surface buildings
Based on the Knothe dynamic theory, mechanical model of rheological deformation of rock is applied to analyze the effect of the change and pause of advancing velocity in coal face on surface buildings protection.The results show that under the protected buildings, advancing should be kept uniformly; both pause and change of advancing velocity will be extremely harmful to buildings because of increased damage stress; under special geological and mining conditions, there exists a harmful advancing velocity scope, and avoiding it can effectively reduce the damage stress of buildings by mining.
Metallurgical Process Engineering
The "material of choice" - steel.- Uprising of China's steel industry.- Process manufacturing industry and process engineering.- Engineering science in steel manufacturing process.- Analysis and integration of metallurgical manufacturing process.- Multi-dimensional mass flow control for metallurgical manufacturing process.- Time factors in steel manufacturing process.-Operating dynamics in the production process of steel plant.- Structure and mode of steel plant.- Steel plant and environment.