The Impact of Temperature on the Triaxial Compression Characteristics of Cemented Paste Backfill

Pengyung Zhu; Zhihong Zhang

doi:10.54097/p928t749

Authors

Pengyung Zhu
Zhihong Zhang

DOI:

https://doi.org/10.54097/p928t749

Keywords:

Cemented paste backfill; triaxial compression; temperature ; failure mode.

Abstract

In deep well mining, due to the influence of the surrounding environmental temperature, the mechanical properties of the cemented paste backfill (CPB) will change. Therefore, studying the effect of temperature on the mechanical characteristics of CPB is of great research significance for the safety and stability of the mining stope. This article conducted triaxial compression tests on CPB at different temperatures, studied the effect of temperature on the shear strength characteristics of CPB specimens, and investigated the failure mechanisms and characteristics of CPB. The results show that: (1) The cohesion and internal friction angle of CPB specimens increase with increasing temperature. (2) As the temperature increases, the failure mode of CPB specimens changes from single oblique section shear failure to Y-type failure.

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