An analytical solution for evaluating the safety of an exposed face in a paste backfill stope incorporating the arching phenomenon

作     者：Xu Zhao Andy Fourie Chong-chong Qi 

作者机构：School of CivilEnvironmental and Mining EngineeringUniversity of Western AustraliaPerth 6009Australia School of Resources and Safety EngineeringCentral South UniversityChangsha 410083China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2019年第26卷第10期

页      面：1206-1216页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：financially supported by the China Scholarship Council (No. 201506420049) 

主　　题：mine safety cemented paste backfill exposed face arching sequential filling 

摘      要：In current underground mining, the stability of the exposed backfill face is a basic issue associated with mining design and has been the subject of considerable research in mining safety and efficiency. In this study, an improved analytical solution for evaluating the safety of vertically exposed faces in backfilling was proposed. Based on a differential slice method, the proposed solution emphasizes the arching effect as having the advantages of more rigor and wider scalability. Feasibility of the proposed solution was validated with classic centrifuge results. Good agreement between compared results indicated that the proposed solution skillfully predicts the behavior of the paste centrifuge model. Additionally, calculation of exposed face safety in sequential filling was presented. The proposed solution has practical significance in mine backfill design.