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Titolo:
Improved prediction of differential subsidence caused by underground mining
Autore:
Cui, XM; Miao, XX; Wang, JA; Yang, S; Liu, HD; Song, YQ; Liu, H; Hu, XK;
Indirizzi:
China Univ Min & Technol, Dept Resource Exploitat Engn, Beijing 100083, Peoples R China China Univ Min & Technol Beijing Peoples R China 100083 Peoples R China Univ Sci & Technol Beijing, Beijing 100083, Peoples R China Univ Sci & Technol Beijing Beijing Peoples R China 100083 eoples R China
Titolo Testata:
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
fascicolo: 4, volume: 37, anno: 2000,
pagine: 615 - 627
SICI:
1365-1609(200006)37:4<615:IPODSC>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Cui, XM China Univ Min & Technol, Dept Resource Exploitat Engn, Beijing Campus,D11,Xue Yuan Lu, Beijing 100083, Peoples R China China Univ Min & Technol Beijing Campus,D11,Xue Yuan Lu Beijing Peoples R China 100083
Citazione:
X.M. Cui et al., "Improved prediction of differential subsidence caused by underground mining", INT J ROCK, 37(4), 2000, pp. 615-627

Abstract

Observations in the field demonstrate that there exist discrepancies between the differential movements predicted from theory and those experienced in practice. From the point of view of structural damage, such discrepanciesshould be eliminated in order to decrease subsidence damage associated with mining. Using non-linear geometrical field theory, the deformation factors are modified and the limitation of linear elastic theory is established. Only when the rotation angles are smaller than 4 degrees is the applicationof conventional theory reasonable. A new deformation index, the mean rotation angle, is proposed. The study shows that there exists a relation between the mean rotation angle and the surface cracks. Incompatibility of rotation can initiate cracking. The outcome of the work presented will be helpfulin improving the calculation accuracy of predicted differential movements,especially for steeper coal seam extraction, extraction under mountains, 'top coal caving' of thick seams, and mining in high relief areas. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 19:26:33