Experimental research and numerical simulation of the multi-field perform-ance of cemented paste backfill: Review and future perspectives

• Published in: 矿物冶金与材料学报 2023, Vol.30 (2), p.193-208
• Main Authors: Yong Wang, Zhenqi Wang, Aixiang Wu, Liang Wang, Qing Na, Chen Cao, Gangfeng Yang
• Format: Article
• Language: English
• ISSN: 1674-4799

Cemented paste backfill (CPB) technology is a green mining method used to control underground goaves and tailings ponds. The curing process of CPB in the stope is the product of a thermo–hydro–mechanical–chemical multi-field performance interaction. At present, re-search on the multi-field performance of CPB mainly includes indoor similar simulation experiments, in-situ multi-field performance monitor-ing experiments, multi-field performance coupling model construction of CPB, and numerical simulation of the multi-field performance of CPB. Because it is hard to study the in-situ multi-field performance of CPB in the real stope, most current research on in-situ multi-field per-formance adopts the numerical simulation method. By simulating the conditions of CPB in the real stope (e.g., maintenance environment, stope geometry, drainage conditions, and barricade and backfilling rates), the multi-field performance of CPB is further studied. This paper summar-izes the mathematical models employed in the numerical simulation and lists the engineering application cases of numerical simulation in the in-situ multi-field performance of CPB. Finally, it proposes that the multi-field performance of CPB needs to strengthen the theoretical study of multi-field performance, form the strength design criterion based on the multi-field performance of CPB, perform a full-range numerical simu-lation of the multi-field performance of CPB, develop a pre-warning technology for the CPB safety of CPB, develop automatic and wireless sensors for the multi-field performance monitoring of CPB, and realize the application and popularization of CPB monitoring technology.