Experiment of the resistivity characteristic of cemented backfill mass during the whole consolidation process
XU Wenbin
TIAN Xichun
QIU Yu
DANG Peng
YIN tianjun
Abstract：By conducting experiments on electricity resistivity (ER) and uniaxial compression strength (UCS) of cemented backfill mass with different cement-sand ratios,slurry mass concentrations and curing times during the whole consolidation process,the electricity resistivity characteristic and the relevance between the ER and the UCS of cemented backfill mass were analyzed.Based on the equivalent circuit theory,the ER change rules and mechanism of cemented backfill mass were revealed in comprehensively consideration of the microstructure of hydration products in different curing times.And the resistivity model was deduced.Combining the experimental data,the quantity equation between the ER and the UCS of cemented backfill samples were established.The results show that th trend of ER development is similar to the curing time.With the increasing of the curing time,the ER of cemented backfill mass decreases rapidly to the lowest value at first,then the law becomes slow after the quickly increased trend.The smaller cement-sand mass ratio and the higher slurry mass concentration are,the larger the resistivity is.The resistivity change rule of cemented backfill is found to be closely related to its inner microstructure and can he divided to five different stages.The UCS and ER development laws of at the same condition are similar,and there is logarithmic relationship between ER and UCS.
Keywords：cemented backfill massresistivityconsolidation strengthconsolidation process
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( 265-272,344 )