A5091651397- Tailings Management and Properties
- Rock Mechanics and Modeling
- Concrete and Cement Materials Research
- Mine drainage and remediation techniques
- Geotechnical Engineering and Underground Structures
- Geotechnical and Geomechanical Engineering
- Geomechanics and Mining Engineering
- earthquake and tectonic studies
- Phase Change Materials Research
- Magnesium Oxide Properties and Applications
- Tunneling and Rock Mechanics
- Geothermal Energy Systems and Applications
- Underground infrastructure and sustainability
- Seismic Imaging and Inversion Techniques
- Materials Engineering and Processing
- Geophysical Methods and Applications
- Seismology and Earthquake Studies
- Mineral Processing and Grinding
- Geotechnical Engineering and Soil Stabilization
- Belt Conveyor Systems Engineering
- Drilling and Well Engineering
Xi'an University of Science and Technology
2022-2025
Ministry of Education of the People's Republic of China
2022
The utilization of industrial solid waste with potential cementitious activity to prepare low carbon, economic and environmental backfilling materials is an urgent issue in cemented paste backfill (CPB). In this work, the mechanical grinding activation modified magnesium slag (MMS), including kinetics, crystallinity, influences on characteristics, have been investigated systematically. indexes particle size distribution (PSD), fineness, sieve residue indicate that efficiency MMS high when...
Based on the test results of laser particle size analyzer, specific surface area analyzer and infrared spectrometer, grinding kinetics coal gasification slag (CGS) was systematically described by using Divas-Aliavden kinetics, Rosin-Rammler-Bennet (RRB) distribution model fractal theory. The influence time group CGS strength activity index mortar studied grey correlation analysis. show that particles are gradually refined before mechanical for 75 min. When is greater than min, "agglomeration...
Layered backfill is commonly used in mining operations, and its mechanical behavior strongly influenced by delamination parameters. In this study, 13 specimens with different numbers of angle were prepared to investigate the anisotropic behavior, energy dissipation characteristics crack development backfill. P-wave velocity, uniaxial compression, scanning electron microscope (SEM), acoustic emission (AE) experiments conducted. The results indicate that: (1) velocity has linear elliptical...
Backfill is often employed in mining operations for ground support, with its positive impact on stability acknowledged many underground mines. However, existing studies have predominantly focused only the stress development within backfill material, leaving influence of stope backfilling distribution surrounding rock mass and largely unexplored. Therefore, this paper presents numerical models FLAC3D to investigate, first time, time-dependent redistribution around a vertical backfilled...
The strength of the backfill body is an important aspect safe production in mining technology. In order to quickly and accurately obtain coal gasification slag -based cemented materials with different ratios, orthogonal design 4 factors 5 levels variance analysis method were used study mass concentration (A), (CGS)/cement (B), bone glue ratio (C), activator content (D) on compressive a genetic algorithm 28-day CGS-based material as response value was constructed, verify applicability model....
When the cut-and-fill mining technique is adopted, cut and fill body with angles will be formed due to flow settlement of slurry. The structure layered surface loose, making it neccessary study its influence on mechanical properties backfill from macro, fine, micro-scales. Standard specimens four types surfaces were prepared tested by uniaxial compression scanning electron microscopy. Based brittleness index, tensor crack hot spot, scalar stress cross, etc., failure mechanism was studied...
Abstract Correctly identifying abnormal and false P-phase arrival picks (P-pick) in underground coal mining is essential to microseismic source location. Manual judgement identification are time-consuming with the increasingly growing monitoring data. To eliminate effects of P-picks, a novel location weighted P-picks was proposed, ten waveform parameters were selected characterize difference between two types signals usable unusable P-picks. The discriminant analysis experiment has revealed...