Numerical simulation of influence parameters on induced stresses distribution during first weighting process of longwall mining

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Mohammadi Sadjad; ATAEI MOHAMMAD; KHALOKAKAIE REZA; Mirzaghorbanali Ali

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MINING ENGINEERING (IRJME) Year:2022 | Volume:16 | Issue:53 Page(s): 1-16

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Information Journal Paper

Title

Numerical simulation of influence parameters on induced stresses distribution during first weighting process of longwall mining

Author(s)

Mohammadi Sadjad | ATAEI MOHAMMAD | KHALOKAKAIE REZA | Mirzaghorbanali Ali | Issue Writer Certificate

Keywords

Longwall miningQ1

First weighting processQ1

induced stressesQ1

discontinuous numerical simulationQ1

Universal Distinct Element Code (UDEC)Q1

Abstract

Investigation of First weighting process due to greater caving span and higher induced stresses when compared to the periodic ones is imperative in the planning stage of a longwall coal mining project. Hence, a reliable prediction of caving span and abutment pressure during this process has major role in stability analysis of operation. This paper presents the results of numerical simulation intended to examine stress distribution in terms of peak abutment pressures during First weighting process in Longwall mining. Longwall mining was simulated by incorporating Universal Distinct Element Code (UDEC) to investigate the effects of five critical parameters included roof strata uniaxial compressive strength, immediate roof height, spacing of bedding planes and mining depth and in-situ stresses ratio on vertical and horizontal peak abutment pressures. The results showed that relationships between all critical parameters with the exception of in-situ stresses ratio and front and rear abutment pressures in vertical and horizontal directions are the same. In addition, it was concluded that all parameters have a direct relationship with the rear and front abutment pressures whereas this relationship is indirect for the immediate roof height and the extraction height.

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APA: Copy

Mohammadi, Sadjad, ATAEI, MOHAMMAD, KHALOKAKAIE, REZA, & Mirzaghorbanali, Ali. (2022). Numerical simulation of influence parameters on induced stresses distribution during first weighting process of longwall mining. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), 16(53 ), 1-16. SID. https://sid.ir/paper/412615/en

Vancouver: Copy

Mohammadi Sadjad, ATAEI MOHAMMAD, KHALOKAKAIE REZA, Mirzaghorbanali Ali. Numerical simulation of influence parameters on induced stresses distribution during first weighting process of longwall mining. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME)[Internet]. 2022;16(53 ):1-16. Available from: https://sid.ir/paper/412615/en

IEEE: Copy

Sadjad Mohammadi, MOHAMMAD ATAEI, REZA KHALOKAKAIE, and Ali Mirzaghorbanali, “Numerical simulation of influence parameters on induced stresses distribution during first weighting process of longwall mining,” IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), vol. 16, no. 53 , pp. 1–16, 2022, [Online]. Available: https://sid.ir/paper/412615/en

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