DOI: 10.11799/ce201603001
Research on integrated green mining technology of mining-backfilling-retaining
CHEN Dong
Abstract：Aiming at the mining-caused problems in Changcheng coal mine, such as environmental pollution, ecological damage, waste of resources, high cost, the paper proposes an integrated green mining technology mining-backfilling-retaining. The relation between gangue compression rate and stress is analyzed under different particle size grading, the mechanism of gob-side entry retaining technology is studied, and the concrete filled steel tube supporting technology is researched, which proves the feasibility of the integrated green mining technology of mining-backfilling-retaining. The optimum gangue particle size grading comprises 5% gangue particle with diameter less than 2?5mm, 15% particle with size under 45mm, and 80% particle with size over 45mm. In the gob-side entry retaining, anchor beam is applied for advance support, concrete filled steel tube column is used with gangue bags roadside support walls to maintain the stability of roadway and control deformation of the surrounding rock.
Keywords：integrated technology of mining-backfilling-retaininggreen mining technologyparticle size gradingconcrete filled steel tube
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1-3,7 )