Key theory and technology of cemented paste backfill for green mining of metal mines  

作　　者：Aixiang Wu Yong Wang Zhu'en Ruan Bolin Xiao Jiandong Wang Linqi Wang 

机构地区：[1]School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]Key Laboratory of High Eficient Mining and Safety of Metal Mines(Ministry of Education),University of Science and Technology Beijing,Beijing 100083,China

出　　处：《Green and Smart Mining Engineering》2024年第1期27-39,共13页绿色与智能矿业工程（英文）

基　　金：supported by the National Natural Science Foundation of China (No.52130404);the Interdisciplinary Research Project for Young Teachers of USTB (Fundamental Research Funds for the Central Universities),China (No.FRF-IDRY-GD22-004).

摘　　要：To reduce or eliminate environmental damage during mining processes,green mining practices have emerged as a focal point in China's metal mining research.Cemented paste backfll technology plays a pivotal role in promoting green mining within the metal industry.The technology allows safely backflling of surface tailings into underground mining airspaces,effectively addressing the challenges associated with tailings storage and underground goaves.In this paper,we introduce the paste rheology theory system,which forms the theoretical backbone of cemented paste backfll.We delve into key technologies such as paste thickening,mixing,transportation,and the use of economical,low-carbon materials.Additionally,we analyze macro and micromechanical properties,in-situ performance monitoring,barricade construction,intelligent control,and numerical simulations of the process.We establish several demonstration projects,both domestic and international,that utilize cemented paste backfill technology to foster greener mining practices.Cemented paste backfill technology is widely used all over the world.It has evolved from its initial stages to being recognized as an advanced application by various ministries and commissions:Ultimately,we propose future research directions for cemented paste backfill technology in the context of eco-friendly metal mining.These perspectives encompass theory,technology,equipment,and mode,which can strongly contribute to the sustainability of the mining industry in China.

关 键 词：Cemented paste backfll Green mining Paste rheology Mine tailings Low-carbon cementitious materials Intelligent backfill 

分 类 号：TD80[矿业工程—矿山开采] X322[环境科学与工程—环境工程]