Study on the mechanics and micro/macroeconomics of multiple strip-shaped pillar recovery

• Autorzy: Chen Qingfa , Wu Shiwei , Zhao Fuyu

Identyfikatory

DOI

10.24425/ams.2020.132703

• Języki publikacji: EN

Abstrakty

EN

The structural system of a multiple strip-shaped pillar-roof is common in underground mine exploitation, and research on its mechanics and micro/macroeconomics is meaningful for utilizing strip-shaped pillar resources. A general model of the structural system of a multiple strip-shaped pillar-roof was established, the deformation mechanism of the model was analysed by material mechanics, and the deflection curve equations of the model were obtained. Based on the stress strain constitutive relation of the strip pillar and cusp catastrophe theory, the nonlinear dynamic instability mechanism of the structural system of a multiple strip-shaped pillar-roof was analysed, and the expressions of the pillar width for maintaining the stability of different types of structural systems were derived. The benefits of different structural systems were calculated using micro/macroeconomic theory, the type of the structural system was determined, and different recovery schemes were obtained. Theoretical application research was applied to a large manganese mine, and the results demonstrate that no pillar recovery was needed in 2016, a 9-m wide artificial pillar could be built to replace a pillar in 2017, and the construction of 14-m wide artificial pillars can be conducted in 2018.

Słowa kluczowe

EN

multiple strip-shaped pillars; recovery; mechanics; macroeconomic

PL

mechanika; szalunek kopalni; bezpieczeństwo kopalni

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2020
• Tom: Vol. 65, no. 1
• Strony: 19--33
• Opis fizyczny: Bibliogr. 19 poz., rys., tab., wykr.

Twórcy

autor

Chen Qingfa

• Guangxi University, School of Resources, Environment and Materials, Nanning, 530004, China
• Chinese Academy of Sciences, State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Wuhan, 430071, China

autor

Wu Shiwei

• Guangxi University, School of Resources, Environment and Materials, Nanning, 530004, China

autor

Zhao Fuyu

• Guangxi University, School of Resources, Environment and Materials, Nanning, 530004, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)