Experimental study on load-bearing mechanism and compaction characteristics of mine filling materials
ZHAO Guoyan
WU Hao
CHEN Ying
XU Zhiwei
LI Zhenyang
WANG Enjie
Abstract：To study the load-bearing mechanism and deformation characteristics of mine filling materials,based on uniform design method,the compaction experiments of tailings and other filling materials of Sanshandao gold mine were carried out by a developed confined compaction apparatus.The results show that the motion of tailing particles during compaction process conforms to the stick-slip mechanical model.The compaction characteristic curve follows an exponential distribution,and the process of compaction can be sub-divided into three stages:pore closure,structural deformation and elastic-plastic deformation,whose energy dissipation ratio is 1 ∶ 5∶ 18.In the compaction experiments of cemented tailings at early curing time,the mass ratio of tailings and binders has a significant interaction effect with the curing time,and the water content has the most significant effect on compaction rate.When the mass ratio of tailings and binders is 4.00,the water content is 15％,and the curing time is 125.58 h,the compaction rate of the cemented tailings is the smallest.
Keywords：confined compactioncompaction ratefilling materialsenergy dissipationearly curing time
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 1251-1258,1266 )