A5065274463- Rock Mechanics and Modeling
- Geophysical Methods and Applications
- Tailings Management and Properties
- Geotechnical Engineering and Underground Structures
- Tunneling and Rock Mechanics
- Geomechanics and Mining Engineering
- Geotechnical and Geomechanical Engineering
- Asphalt Pavement Performance Evaluation
- Coal Properties and Utilization
- Corrosion Behavior and Inhibition
- Landslides and related hazards
- Geoscience and Mining Technology
- Structural Response to Dynamic Loads
- Concrete and Cement Materials Research
- Drilling and Well Engineering
Taiyuan University of Technology
2020-2024
The relationship between support and surrounding rock is of great significance to the control in mining process. In view fact that most existing numerical simulation methods construct virtual elements stress servo approximately replace hydraulic problem, this paper establishes a new model with same working characteristics as actual by integrating software Rhino, Griddle FLAC3D, which can realize different conditions. Based on model, influence mechanism supporting strength regulation coal...
In underground engineering, shear failure is a common type in coal-rock mass under medium and low strain-rate disturbance loads. Analyzing the mechanical properties of dynamic normal load significant. order to reveal influence on coal rock, static coupling electro-hydraulic servo testing machine was used conduct tests coal-like rock materials constant load. The amplitude 10 kN frequency 5 Hz. damage process specimens detected by acoustic emission (AE) detection system. results imply that can...
A better understanding of the mechanical behavior and failure characteristics fully grouted bolts under tension is great significance to ensure safe production coal mines. For this purpose, a pull-out experiment anchorage specimens was conducted numerical simulation based on experimental results. The results were analyzed in detail study bearing bolts. indicated following: (1) interface could be divided into four stages. local strain positively correlated with change trend load. (2) acoustic...
In order to study the weakening mechanism and mechanical behaviors of hard lamprophyre Carboniferous Permian coal-bearing strata in China’s mining area, samples were subjected static rock dissolution experiments with pH values 0, 2, 4. The acid corrosion was revealed from weight changes samples, characteristics solution ion concentration, macro-mechanical properties. experimental results show that reaction occurred between solution. With increasing concentration H+, more intense, degree...
This paper takes the double predriven recovery rooms (DPRR) of 31109 panel a coal mine in Inner Mongolia as case study. DPRRs are used to withdraw mining equipment, which play significant role safe and efficient production final longwall stage. Theoretical analysis numerical simulation were carried out study reasonable size front abutment pillar between DPRR (inter-DPRR pillar) damage depth floor. The results show that (1) stress distribution fender (the remnant panel) can be approximately...
Backfill mining is an effective technique that can prevent and control the impact of dynamic disasters which occur in deep underground coal mines. This allows to reduce surface subsidence achieve a greener mining. The backfill shear mechanical properties under disturbances, are great significance for ensuring surrounding rock stability Therefore, studying cemented gangue body (CGBB) coupled static loads actions importance. In this paper, tests acoustic emission (AE) technology were used...
Abstract Preexisting discontinuities and the water affect fracture evolution process as well rock stability most extensively. To ensure operational safety, effects of on mechanical properties fissured masses must be understood well. In this study, a series uniaxial compressive tests is conducted both dry saturated specimens with varying fissure angles. Real-time acoustic emission digital image correlation are applied to monitor process. The failure mode investigated by identifying types...