A5003556861- Rock Mechanics and Modeling
- Landslides and related hazards
- Geotechnical and Geomechanical Engineering
- High-Velocity Impact and Material Behavior
- Tunneling and Rock Mechanics
- Geotechnical Engineering and Underground Structures
- Geoscience and Mining Technology
- Geophysical Methods and Applications
- Geomechanics and Mining Engineering
- Seismic Imaging and Inversion Techniques
- Geophysical and Geoelectrical Methods
Anhui University of Science and Technology
2022-2024
Southwest Jiaotong University
2024
China University of Petroleum, Beijing
2024
Anhui University of Technology
2024
To investigate the dynamic mechanical properties of water-saturated fissure rock at different strain rates, prefabricated sandstone specimens with a 45° dip angle were treated water saturation and impact compression test was performed Split Hopkinson Pressure Bar (SHPB) device pressures. The results show that clusters stress–strain curves natural fissures are basically similar under air A distinct rate effect observed for compressive strength, both which increased increasing rate. From...
Under dynamic loads, such as blasting, excavation, or quarrying, rocks with fissures are the first to sustain damage, leading instability in engineering rock mass. To investigate kinetic properties of fractured rocks, coal mine sandstone specimens underwent impact compression tests using a dynamic–static combination SHPB (split Hopkinson pressure bar) test device at different loading rates under combined and static conditions. The damage characteristics were analyzed from an energy point...
The aim of this study was to examine the effects sandstone ring specimens with different inner diameters on dynamic compression mechanical characteristics after dry and wet circulation. To carry out our study, we subjected a specimen 50 mm outer diameter 0~25 10 cycles Afterward, recorded specimen’s basic physical parameters used split-Hopkinson pressure bar (SHPB) test device perform an impact test. Following circulation, results showed that mass loss rate increased volume expansion rates...
With the gradual deepening of mine excavation depth, strong disturbance deep strata becomes more and obvious. Rock’s failure under blasting mainly depends on its dynamic tensile strength. The changes in rock’s properties are obviously affected by temperature water. In order to study annular sandstone specimens influence water, was drilled, followed water bath tests at eight temperatures (25~95 °C). It can be seen from analysis test results that mass volume growth rates intact first increased...
The excavation of hard rock roadways in coal mines is often the environment underground water and high ground temperature, it easy to be affected by dynamic load, which leads roadway destruction increases difficulty support. ring sandstone specimens with different inner diameters (0~25 mm) were treated temperature coupled, compression test was produced Hopkinson pressure rod device (SHPB). experimental results indicate that coupling effect reduces performance specimens. XRD showed...
In order to study the dynamic properties of temperature–water-coupled sandstone under axial pressure, impact compression tests were carried out on samples after temperature–water coupling eight types pressure (0.5~4.0 MPa) loading as well no by using split-Hopkinson bar (SHPB) test set. The results showed that mass, volume, and density specimens increased 0.57%, 0.37%, 0.20%, respectively, coupling. With increasing compressive strength decreased a linear function, strain quadratic modulus...
Abstract A large number of tectonically mixed rock belts and complex tectonic zones are distributed in the southwestern part China. In these areas, high geostress stresses have caused some underground layers to be crushed broken, eventually forming zones. Which may undergo creep deformation under long-term loads. The thesis is based on a typical Firstly, factors affecting were analysed, response law each influencing factor demonstrated. Then, theory uncorroborated measures hierarchical...
Summary Electrical signals in the vicinity of excited steel-cased borehole sources offer significant potential for monitoring fracture zones filled with highly conductive proppant. However, despite this potential, it is difficult to accurately monitor boreholes due various challenges, such as interference from background noise and complexity geological environment. To address these we propose a novel crosswell measurement method specifically designed diagnosing hydraulic boreholes. During...