Roadway support design based on in-situ stress and its asymmetrical distributions in a coal mine

• Autorzy: Guo Hongjun , Ji Ming , Zhao Weisheng

Identyfikatory

DOI

10.24425/ams.2020.133194

• Języki publikacji: EN

Abstrakty

EN

Through in-situ stress measurements, stress data were obtained from an auxiliary transportation roadway in a coal mine in Shanxi Province, China. Based on the principles of elastic mechanics and using a generalized plane strain model, the mechanical effects of the in-situ stresses on an idealized roadway were calculated and the distributions of stresses, displacements, and plastic zones determined. Building on this model, the vulnerable zones in the roadway cross section were identified. Ground support specifications were developed and during specification design, comprehensive consideration was given to factors affecting the stability of the rock surrounding the roadway. A scientific and reasonable support scheme was put forward. Practical experience in the coal mine shows the normal forces of anchor bolt and cable, the minimal convergence of roof to floor, and a generally good support in the auxiliary transportation roadway. The support should ensure safe production during its service life. This study provides a new method for designing roadway support systems that can be particularly valuable for high-stress roadways.

Słowa kluczowe

EN

in-situ stress; stress in the rock surrounding roadway; displacement in the rock surrounding roadway; plastic zone in the rock surrounding roadway; support parameters

PL

kopalnia węgla; droga transportowa; transport kopalniany

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2020
• Tom: Vol. 65, no. 2
• Strony: 299--315
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr.

Twórcy

autor

Guo Hongjun

• Jiangsu Vocational Institute of Architectural Technology, Xuzhou, 221116, China; China University of Mining & Technology, State Key Laboratory of Coal Resources and Safe Mining, Xuzhou 221116, China

autor

Ji Ming

• China University of Mining & Technology, Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China; School of Mines; Xuzhou, 221116, China

autor

Zhao Weisheng

• Institute of Mining Engineering, Guizhou Institute of Technology, Guiyang 550003, 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)