Taking a filling mining face in Anhui as the research background, the movement and deformation characteristics of overburden strata in filling working face under different filling rates were studied by means of numerical calculation. The results show that: There are stress arches in the filling area. The stress concentration factor at the open-off cut and the front coal wall increases linearly with the decrease of the filling rate, and the mining influence range increases exponentially with the decrease of the filling rate. With the advancement of the working face, when the filling rate is less than 90%, the immediate roof is in the process of continuing to press the filling body, and it is broken due to the long bending length of the suspension; when the filling rate is greater than 90%, because the filling body is compacted and has a certain strength, the immediate roof does not break. Filling rate has a great influence on the stability of overlying strata in filling stope, which is an important index of filling mining effect. The research results are of great significance to guide filling mining.

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How to cite this paper

Study on the Movement and Deformation Law of Overlying Strata in Filling Working Face under Different Filling Rates

How to cite this paper: Yonglin Xue. (2023). Study on the Movement and Deformation Law of Overlying Strata in Filling Working Face under Different Filling Rates. Engineering Advances, 3(1), 52-55.

DOI: https://dx.doi.org/10.26855/ea.2023.02.011

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Study on the Movement and Deformation Law of Overlying Strata in Filling Working Face under Different Filling Rates

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