A Study on the Calculation Method of Support Pressure in the Structure of Typical Upper Cladding Rock Formations

Dong Li, Lei Kang () and Wanhong Li ()
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Dong Li: School of Mine Safety, North China Institute of Science and Technology, Beijing 101601, China
Lei Kang: School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Wanhong Li: College of Innovation and Entrepreneurship, Kunming Metallurgy College, Kunming 650033, China

Sustainability, 2022, vol. 14, issue 22, 1-11

Abstract: Aiming at the calculation problem of bearing pressure of typical overlying strata structure, in this paper, mechanical calculation, field monitoring and other methods are used to study the influence range of abutment pressure. Recently, many major rock burst accidents in working surface show that with the increase of mining depth and the change of overlying strata structure, the abutment pressure distribution has become one of the problems of safe mining. The influence range, distribution of high stress area and peak position of working surface support pressure need to be solved urgently; and through theoretical analysis, this paper reveals (whole rock single-layer structure, whole rock layered structure, whole rock single-layer structure—without arch in soil layer, whole rock layered structure—without arch in soil layer, whole rock single-layer structure—with soil arching, whole rock layered structure—with soil arching) the stress transfer mode, transfer size, and arching conditions of overlying strata in different areas. The mechanical system of abutment pressure calculation for typical overburden structure is established, which provides theoretical basis for mine optimization design scheme, mining sequence, and limited personnel distance.

Keywords: overlying rock structure; abutment pressure; rock burst; computing method (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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