充填体抗拉强度特性的试验研究

充填体可以改善围岩应力状态、限制围岩移动、维护采场稳定.通过在室内条件下制作和养护充填体试件,然后采取劈裂法对不同配比和浓度的充填体试件进行测试,得出了充填体试件在不同配比、浓度下的峰值载荷、峰值位移、平均峰值应变、抗拉强度以及应力-应变曲线.通过分析这些拉伸试验条件下的力学性质,对提高充填体质量和维护采场稳定有指导作用.

Experimental Study on Tension Strength Characteristics of Backfilling

Stability of mined-out area is maintained by improving the state of stress and restricting its displacement in surrounding rock with backfilling.In this paper,the backfill samples were made and conserved in the conditions of indoors,and then tested with the splitting method at different ratio of fill and different concentrations.According to the obtained test data of uniaxial splitting tensile strength,the peak load,the peak displacement,the average peak strain,tensile strength as well as stress-strain curves were educed.These mechanical properties under the condition of the tensile test were analyzed,which are of instructive significance to the mine for improving the quality of backfilling and maintaining the stability of the stopes.