Similar simulation study on overlying strata movement law of high stress and large mining length working face

Menghan Tian

doi:10.63313/AERpc.9021

Authors

Menghan Tian School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China Author

DOI:

https://doi.org/10.63313/AERpc.9021

Keywords:

Deep mining, large mining long working face, overburden rock movement, physical similarity simulation

Abstract

Aiming at the problem of overlying strata movement law of large mining length working face under high stress environment in deep mining, this paper system-atically studies the movement law and failure form of overlying strata on large mining length working face by combining physical similarity simulation with three-dimensional photogrammetry. The results show that after the completion of the whole excavation process, the cumulative maximum subsidence of the surface reaches 5.4mm, the maximum subsidence value appears at 73cm from the left side of the model frame, the minimum subsidence value of the surface is 4.7mm, and the minimum subsidence value appears at 50mm from the left side of the model frame. In the process of advancing the whole working face, the maximum roof subsidence reached 15.9mm, the maximum roof subsidence ap-peared at 75cm from the left boundary of the model frame, the minimum roof subsidence was 5.4mm, and the minimum roof subsidence appeared at 44cm from the left boundary of the model frame.

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