Sensitivity analysis of key factors influencing compression-induced deformation of waste rocks for backfilling to reduce environmental pollution

作者: Meng Li , Guohao Meng , Jixiong Zhang , Peng Huang , Deon M. Germain

DOI: 10.1007/S11356-019-06932-Y

关键词:

摘要: As solid wastes are generated during coal mining, waste rocks can be backfilled into goaf so as to reduce geological hazards and environmental damage caused by mining; however, under different stress regimes, the sensitivities of factors influencing compression-induced deformation (CID) for backfilling (WRBs) different. In order control more efficiently, compression characteristics four levels were tested using a homemade loading test system granular materials based on an orthogonal experiment. The influences lithology, particle size distribution (PSD), lateral stress, number cycles ranks analysed. results showed that: (1) axial less than 10 MPa, was considered main factor backfilling; when ranged from 10 20 MPa, factor; (2) levels, optimal combination is sandstone, 0 10 mm, 3 MPa 7 cycles; (3) backfilling, it necessary optimise 10 MPa; while between essential distribution.

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