Study on the strength of the artificial dam of underground reservoir in Wulanmulun mine

In recent years, to alleviate the problem of water loss and severe water shortages in the west of China, the concept of coal mine underground reservoir was put forward, and a series of related research were conducted. At present, it has achieved a large number of engineering application, but the structure and the related parameters of the dam still remain to be studied and optimized. In order to explore the influence of the strength of the artificial dam on the stability of the artificial dam, FLAC3D numerical simulation was carried out based on the geological conditions of Wulanmulun mine and the actual working conditions of the artificial dam in its underground reservoir, and the displacement and stress were analyzed respectively. The results show that, with the increase of the dam strength grade, the displacement level of the dam and its cut decreases, but the stress level increases gradually. Overall, the proposed strength grade of the artificial dam should be C25.