Title: Study of rock stability for mine entries in Ganhe coal mine

Authors: Renshu Yang; Maoyuan Wang; Xinmin Ma; Yanbing Wang; Jamal Rostami

Addresses: School of Mechanics and Construction Engineering, University of Mining and Technology, Lijian Building 405, Ding 11, Xueyuan Street, Beijing, China ' School of Mechanics and Construction Engineering, University of Mining and Technology, Lijian Building 405, Ding 11, Xueyuan Street, Beijing, China ' School of Mechanics and Construction Engineering, University of Mining and Technology, Lijian Building 405, Ding 11, Xueyuan Street, Beijing, China ' School of Mechanics and Construction Engineering, University of Mining and Technology, Lijian Building 405, Ding 11, Xueyuan Street, Beijing, China ' College of Earth and Mineral Sciences, Pennsylvania State University, 1520 Chaumont Ave, State College, PA 16801, USA

Abstract: In this study, the fuzzy cluster method is used for classification of rock and rock mass properties in Huozhou mine area. This method is based on using the results of rock property testing as well as in-situ ground stress measurement to assess stability of mine entries. Measured values of rock properties and field observations of 2-1121 roadway in Ganhe coal mine was analysed by using fuzzy comprehensive assessment method to assign classification. The results were subsequently compared with the extent of zone of plastic deformation which was measured by in-situ instrumentation. The analysis of data from the field measurement and assigned classification was used to verify the accuracy and relevance of the classification system. The suitable ground support selection can be linked to rock mass classification to assure stability of the mine entries. The ensuing deformation monitoring showed that the support selection was effective and successful in stabilising the ground. [Received: May 10, 2015; Accepted: November 17, 2015]

Keywords: rock mass classification; stability of coal mine entries; fuzzy clustering; support design.

DOI: 10.1504/IJOGCT.2017.084313

International Journal of Oil, Gas and Coal Technology, 2017 Vol.15 No.2, pp.166 - 189

Received: 14 May 2015
Accepted: 17 Nov 2015
Published online: 05 Jun 2017 *

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