A5100747988- Rock Mechanics and Modeling
- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- Geotechnical and Geomechanical Engineering
- Fatigue and fracture mechanics
- Cellular and Composite Structures
- Coal Properties and Utilization
- Landslides and related hazards
- Geomechanics and Mining Engineering
- Tunneling and Rock Mechanics
- Advanced Materials and Mechanics
- Tailings Management and Properties
- Multilevel Inverters and Converters
- Pediatric Hepatobiliary Diseases and Treatments
- Underground infrastructure and sustainability
- Collagen: Extraction and Characterization
- Fault Detection and Control Systems
- Geophysical Methods and Applications
- Machine Fault Diagnosis Techniques
- Geotechnical Engineering and Analysis
- Grouting, Rheology, and Soil Mechanics
- CO2 Sequestration and Geologic Interactions
- Transportation Safety and Impact Analysis
- Dam Engineering and Safety
- Geothermal Energy Systems and Applications
Jilin University
2014-2024
Taiyuan University of Technology
2023-2024
Inner Mongolia Electric Power (China)
2023-2024
Northeastern University
2018-2021
PowerChina (China)
2019
Heihe University
2010
Tensile strength and fracture toughness, important parameters of the rock for engineering applications are difficult to measure. Thus this paper selected three kinds granite samples (grain sizes = 1.01mm, 2.12mm 3mm), used combined experiments physical numerical simulation (RFPA-DIP version) conduct three-point-bending (3-p-b) tests with different notches introduced acoustic emission monitor system analyze mechanism around notch tips. To study effects grain size on tensile toughness samples,...
To better understand the interaction between hydraulic fracture and oriented perforation, a fully coupled finite element method (FEM)-based hydraulic-geomechanical model accommodating gas sorption damage has been developed. Damage conforms to maximum stress criterion in tension Mohr–Coulomb limits shear with heterogeneity represented by Weibull distribution. Fracturing fluid flow, rock deformation damage, propagation are collectively study complexity of initiation perforations present...
Tight oil reservoirs are complex geological materials composed of solid matrix, pore structure, and mixed multiple phases fluids, particularly for suffering from high content in situ pressurized water found China. In this regard, a coupled model considering two-phase flow water, as well deformation damage evolution porous media, is proposed validated using associated results, including the depletion process, analytical solution stress shadow effect, physical experiments on multi-fracture...
Shale gas is a crucial unconventional natural gas; carbon dioxide serious greenhouse gas. Therefore, using supercritical as fracturing fluid can fracture shale reservoirs and exploit well store to slow the effect. In this study, experiments were conducted at different drilling depths. They showed that structural failure pressure decreased with increase in borehole sealing lengths owing larger excavation damage zone induced by drilling. During process, acoustic emission signals recorded,...
In order to enhance fault diagnosis accuracy while minimizing computational complexity, this study presents a feature extraction method based on EMD (Empirical Mode Decomposition) and PCA (Principal Component Analysis). The is employed decompose the original signal into set of Intrinsic Functions (IMFs). energy each IMF its ratio are computed. dominant IMFs selected their ratio, energies utilized as partial features. Additionally, time-domain indicators calculated, principal components...
In order to investigate the structure and mechanical characteristics of cattle horns, microstructures keratin shell bone core were examined by scanning electron microscopy, a series tests performed tension-compression test machine pendulum impact machine. Results showed that was laminated stacked protein slices, light-weight porous material with pores randomly distributed in longitudinal direction. The ultimate tensile strength diminished gradually from distal middle proximal parts values...
By constructing the permeability model to distinguish fracture zone, plastic and elastic zone around hydraulic fracturing borehole, we study influence of some important parameters on stress distribution borehole coal rock. The research results show that greater ground stress, radial in smaller while trend variation is opposite stress. gas pressure, rock each area. larger radius, at same distance from center, can provide a theoretical reference for construction mines with different reservoir...
Selective harmonic elimination pulse-width modulation (SHE-PWM) method has been widely used in various industrial multilevel converters befitting from low switching frequencies and precise of low-order harmonics. Most existing studies focus on accelerating calculation angles or optimizing predictive neural networks. However, these offline methods cannot dynamically deal with the errors introduced by nonuniform dc sources biased placements angles. This paper proposes an online adaptive SHE...
Composite tubes are widely adopted in engineering protections owning to desirable passive energy absorption. With the aim of enhancing absorption and making full use structural materials, a novel tube inspired by structure cattle horn has been designed. It consisted shell composed nested core evenly distributed tubes, which connected beams. The properties bionic tube, six-cell four-cell circular were compared numerical models verified axial compression. factors affecting mechanical responses...