Experimental Study on the Characteristics of Aeolian Sand Paste-Like Stowing Material in Coal Mine

Abstract:

In order to reduce the cost of stowing materials in Yuyang coal mine, and localize the stowing material, a series of experiments were conducted, which were based on the sampling and testing of aeolian sand to analyze the reaction mechanism of paste-like stowing slurry. The influence of different aeolian sand and auxiliary material content on stowing material was also studied in the experiment. Experimental results indicate that the main components of aeolian sand are SiO₂ and Al₂O₃. The stowing material density increases by 23.4% with more aeolian sand additive amount, and the material cost falls to 93 yuan/m³, reduced by 25.6%. With the increase of auxiliary gelatinization material dosage, the 28-day strength of material increases by 59.4%, the hardening rate of stowing material reaches up to 109.5%, increased by 23%, and the stowing material shows micro expansion.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 1020-1024
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.1020
• Online since: June 2014
• Authors: Kai Hua Sun*, Rui Zhang
• Keywords: Aeolian Sand, Auxiliary Gelatinization Material, Experiment Study, Paste-Like Stowing Material

References

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