In recent years, environmental protection and sustainable development have become important directions in my country's development strategy. In response to the concept of "green mining", this article focuses on metal mine mining and conducts a numerical simulation study on paste filling technology. Compared with traditional mining methods, the range of materials available for paste filling is wider, which has a more positive impact on environmental protection. This paper combines blockchain technology with numerical simulation research to compare and analyze the filling rate of different filling methods and the damage to the overlying strata during mining, highlighting the technical advantages of paste filling mining. In the laboratory experiment, this article optimizes and adjusts the paste ratio, and studies the influence of materials on the strength of paste by adjusting a single factor. At the same time, this paper analyzes the filling effect of the paste filling body and its control effect on the surface subsidence, and compares the observation data with the actual surface to verify the accuracy of the numerical simulation. From the experimental data, when calculating the surface subsidence coefficient, according to the maximum surface subsidence value and the maximum horizontal movement value obtained by the simulation, the surface subsidence coefficient of the straddle method is calculated to be 0.67, and the surface subsidence coefficient of paste filling mining is 0.02 , About 2% of the subsidence coefficient of the subsidence method. It can be seen that paste filling mining has a significant effect in controlling surface subsidence.

Rosa Cantero. Numerical Simulation Research on Paste Filling Mining of Metal Mines Based on Blockchain Technology under the Background of Agricultural Environmental Protection. International Journal of Engineering Technology and Construction (2022), Vol. 3, Issue 1: 17-32. https://doi.org/10.38007/IJETC.2022.030102.

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