A5045996878- Rock Mechanics and Modeling
- Tailings Management and Properties
- Geotechnical Engineering and Underground Structures
- Geomechanics and Mining Engineering
- Underground infrastructure and sustainability
- Concrete and Cement Materials Research
- Mine drainage and remediation techniques
- Geoscience and Mining Technology
- Numerical methods in engineering
- Grouting, Rheology, and Soil Mechanics
- Mining and Resource Management
- Geophysical Methods and Applications
Shanxi Datong University
2020-2025
Shandong University of Science and Technology
2019-2023
Slag waste can be effectively used to produce coal–fired slag concrete (CSC), which has economic and environmental benefits. However, CSC in engineering construction will eventually subjected damage. The purpose of this study is investigate the mechanical characteristics damage evolution behaviour specimens under a uniaxial compressive load using acoustic emission (AE) monitoring technology. Through compression testing AE monitoring, stress–strain curve are obtained. Subsequently, model...
To study the coupled degradation effects of disturbance damage and dry-wet cycles on backfill, cemented paste backfill (CPB, a mixture coal gangue, fly ash, cement water) samples with were prepared by cyclic loading tests. Subsequently, uniaxial compression tests performed CPB subjected to both cycles. Combined discrete element method, this systematically explores mechanical behavior meso-degradation mechanisms under action damage. The research shows that: ①The will cause samples, as number...
The high temperature conditions in the deep mine may affect stability and strength of cemented backfill. To investigate effect on mechanical characteristics backfill under triaxial compression, compression experiments were done coal gangue-fly ash that had been cured at three temperatures (20°C, 35°C, 50°C). deviatoric stress-strain curve was produced, its deformation parameters, dilatancy, failure investigated, a more appropriate criteria proposed. research results indicate that, peak...
Aiming at the problem of seepage-stress coupling failure instability cemented gangue-fly ash backfill (CGFB) with defects, triaxial compression test and acoustic emission (AE) monitoring CGFB were carried out in this paper. The strength characteristics defective under analysed,the variation rules AE parameters (ring count, b-value entropy value) process systematically studied. It is found that b-value, defects have a 'mutation' phenomenon, which can be used as precursor feature backfill....
Aiming at the backfill with prefabricated fracture under seepage‐stress coupling, concepts of macrodamage, loaded mesodamage, seepage and total damage were proposed. Based on macroscopic statistical model, coupling effect seepage, stress, initial was considered comprehensively model established. The mechanical properties different water pressures confining tested rationality verified. research shows that are determined by pressure, load, fracture, effect. Fracture have significant effects...
Aiming at backfill with crack under the thermo-mechanical (TM) coupling, concepts of macro-damage, loading meso-damage, thermal and total damage were proposed. Based on statistical theory, considering coupling effects temperature, load initial crack, a evolution model TM was established. this, strength criterion mechanical constructed by multivariate function full differential method. The research shows that: (1) theoretical curves are in good agreement test curves, which verifies...
The borehole shrinkage of swelling rock in coalmine is a complex problem affected by the combination multiple fields, such as humidity field and stress field. By establishing equilibrium equation coalmine, considering expansion softening properties, an elastic-plastic mechanics analysis was carried out, plastic zone radius radial displacement were determined under Taking floor roadway 8# coal seam Songzao Coalmine Chongqing example, influence laws water content, ground stress, pressure hole...