Analysis and Application of Pumping Waste Filling Material Performance

Abstract:

Based on the important role in aspects of Backfill mining technology in mining to resolve the deep pressure , maintain the slope steady, control the surface sinking and protect the ecological environment, this article probes the relationship between filling material strength to gangue for coarse aggregate ,to coal ash for fine aggregate, to cement and waterglass for binder and influencing factors, and researches the strength properties and the deformation properties of filling objects used for engineering practice, which gets good filling effect. The results showed that the filling material having a high early strength and high elastic modulus, when compressed it performance plastic hardening characteristics; under certain conditions of the concentration by mass and the amount of coal ash, filling mass showing the approximate linear relationship between the compressive strength and natural curing time, Under the same condition, cement + water glass as cementitious material filling mass is significantly higher than only with cement as a cementitious material in the strength.

• Periodical: Applied Mechanics and Materials (Volumes 608-609)
• Pages: 957-961
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.608-609.957
• Online since: October 2014
• Authors: Gong Zhong Wang*
• Keywords: Filling Material Strength, Gangue Filling Mass, Mechanical Property, Natural Curing Time, Physicochemical Properties

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