A5101936853- Rock Mechanics and Modeling
- Geoscience and Mining Technology
- Coal Properties and Utilization
- Geophysical Methods and Applications
- Geomechanics and Mining Engineering
- Tunneling and Rock Mechanics
- Drilling and Well Engineering
- Geotechnical and Geomechanical Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Grouting, Rheology, and Soil Mechanics
- Dam Engineering and Safety
- Groundwater flow and contamination studies
- Ultrasonics and Acoustic Wave Propagation
- Geotechnical Engineering and Underground Structures
- Thermography and Photoacoustic Techniques
- Laser Material Processing Techniques
- Seismic Waves and Analysis
- Hydrocarbon exploration and reservoir analysis
- Phase Change Materials Research
- Concrete Properties and Behavior
- Advanced materials and composites
- Seismic Imaging and Inversion Techniques
- Geochemistry and Geochronology of Asian Mineral Deposits
- Landslides and related hazards
- 3D Surveying and Cultural Heritage
Sichuan University
2019-2024
Shenzhen University
2020-2023
State Key Laboratory of Hydraulics and Mountain River Engineering
2019-2023
Copiah-Lincoln Community College
1975
During deep mining, the excavation disturbance stress path is domination factor for stability of surrounding rock mass as well ground pressure. One important parameters loading or unloading rate disturbed coal, which depended on mining rate. To achieve a understanding and its effect coal behavior, preliminary case investigation mechanical properties at various rates in both laboratory scale field was performed. Based uniaxial compression test digital image correlation (DIC) method, behavior...
The exploration and development of oil gas resources have shifted from shallow to deep ultradeep. difficulty rock breaking has also increased, introducing new challenges traditional rock-breaking technology. Hence, there is an urgent need develop technologies improve the efficiency resources. Therefore, this study focused on microwave technology conducted experimental numerical simulation research typical deep, hard granite. results showed that granite in field exhibited high-temperature...
Abstract The mainstream method for extracting shale gas involves hydraulic fracturing to create fracture networks. However, as extraction depth increases, notable issues such rapid production decline, low recovery rates, high water consumption, and resource waste become apparent. Identifying new efficient auxiliary rock-breaking technologies is crucial overcoming these challenges. laser, successfully utilized in industrial production, medical treatment, technological research, offers unique...
Rock breaking is one of the most basic issues in deep underground engineering. Water plays an important role rock response under microwave radiation. Consequently, radiation experiments using red sandstone with different water contents were conducted. The damage characteristics and ultrasonic properties after primarily investigated, representative conclusions drawn as follows: With increase content, time complete formation rupture surface sample gradually decreased, decreasing range...
Studying the rough structure characteristics of rock fracture surfaces under microwave irradiation is a great significance for understanding rock-breaking mechanism. Therefore, this work takes surface as research object three failure modes: irradiation, uniaxial loading and microwave-uniaxial loading. The undulation roughness are used to describe morphological fractured surface. Research shows that smoothest, which exhibits fractal dimension in range 1–7[Formula: see text]mm 2.0005–2.0657,...
In order to explore the damage characteristics and crack development laws of hard rock under laser irradiation, irradiation experiments on sandstone were conducted considering interaction three parameters: spot diameter, power, time. Subsequently, uniaxial compression samples before after irradiation. addition, based maximum principal stress intensity criterion finite element software, induced fracturing simulation conducted. Research has found that: Laser significantly reduces compressive...
The study of gas seepage under the condition multifield coupling has always been an important topic in coal mining. Based on theory and research method numerical simulation, influences stress temperature fields field conditions deep mining are studied. With example J15-31030 working face from mine No. 12 Pingdingshan Coal Mine, modeling finite element analysis carried out. preliminarily revealed. results show that closer to face, greater velocity is, gradient change. There is a clear...
The mechanical behaviour and seepage characteristics of coal under the mining engineering disturbance are great significance to prevent gas disasters. Based on geological conditions No. 12 mine China Pingdingshan Mining Group, experiments stress path roadway excavation were carried out. experimental result shows that: in fracture zone is most strongly affected by excavation. samples showed obvious expansion phenomenon, their cracks complex. They formed effective permeability before peak...
Thermal damage control of mass concrete is the key to guarantee quality projects. Based on several engineering experiences and finite element software ANSYS, temperature field stress typical dam section Tengzigou hydropower station in Sichuan province were simulated. Considering actual materials used, cooling measures, etc., maximum tensile compressive at different time points derived from during maintenance calculated, numerical results showed that strength increment under given conditions...
In the practice of deep engineering, it is expected to improve engineering efficiency by introducing microwave energy. Therefore, based on 1050 m sandstone, heating characteristics sandstone and its constituent minerals in field are comprehensively explored through experiments nu?merical simulations. paper, asynchronism temperature rise different areas depends local dielectric loss maximum heat storage capacity. With increase temperature, evaporation water leads decrease properties,...
The evolution of the mining-induced fracture network formed during longwall top coal caving (LTCC) has a great influence on gas drainage, roof control, recovery ratio and engineering safety aquifers. To reveal stress LTCC, in front working face was observed by borehole video experiments. A discrete element model established universal code (UDEC) to explore local distribution. regression relationship between fractal dimension mining established. results revealed following: (1) disturbance had...