Abstract
Nowadays, the solid backfilling mining technology has been valued as an important technical mean of green mining. However, due to the complicated geological conditions, effective and efficient methods to monitor the deformation of the solid backfilling baby, are lacking in solid backfilling mining. Among various methods proposed by different scholars, an electrical resistivity (ER) method is one of the non-destructive monitoring methods that can be successfully applied in intelligent health monitoring of civil engineering structures such as roads. It is undeniable that there are obvious structure and mechanics differences between the solid backfilling mining and the conventional civil engineering. Therefore, the physical and mechanical characteristics of the coal waste rock backfilling material were studied, and the uniaxial compressive test, along with ER monitoring of material, were conducted in this paper. The relationships between the deformation characterizations and the ER of the waste rock backfilling material under various pressures were also analyzed. The test results suggest that the changed trend of stress is consistent with the ER in the process of compression, followed by the ER value increased with the increase of particle size ratio in a later stage of loading. This study provides insightful validation in monitoring the deformation characteristics of the waste rock backfilling material by ER method.
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This work was supported by the National Natural Science Foundation of China [Grant numbers 51674241]; the National Key R&D Program of China [Grant numbers 2018YFC0604700].
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He, Z., Ju, F., Xiao, M. et al. An experimental investigation on the compaction characteristic of coal waste rock backfilling material using electrical resistivity method. Environ Earth Sci 80, 450 (2021). https://doi.org/10.1007/s12665-021-09701-8
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DOI: https://doi.org/10.1007/s12665-021-09701-8