Experiment and application of assembled permeable barricade in underground filling stopes
Filling barricade has become the primary consideration due to the advantage in improving fill-ing quality and ensuring safety in the process of filling in underground mines.Assembled permeable bar-ricade with an arc-shaped grid curved skeleton is proposed,which adopts a prefabricated construction method and can adapt to changes in drift specifications.The sealing layer adopt dehydrated fabric make sure sufficient dehydration.Test barricades with the specification of 3.5 m×4.0 m for test is designed.Industrial tests were conducted in the stopes of sub-level stopping method and drift mining method.Re-sults indicate that the proposed barricade has a good drainage performance.The barricade deformation measured by multiple filling test using a high-concentration filing slurry does not exceed 10 mm,and 34 mm deformation is measured by a one-pass filling test using a paste slurry,the deformation of barricades in both cases within the allowable range.After ten barricades construction in a mine,the installation fee was estimated to be ¥ 435/m3,effectively verifying the proposed barricade's economic and technical ad-vantages.
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维普
