A5086180282- Rock Mechanics and Modeling
- Tailings Management and Properties
- Energetic Materials and Combustion
- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Geotechnical and Geomechanical Engineering
- Thermal and Kinetic Analysis
- Geotechnical Engineering and Underground Structures
- Seismic Imaging and Inversion Techniques
- Gas Sensing Nanomaterials and Sensors
- High voltage insulation and dielectric phenomena
- Structural Load-Bearing Analysis
- Catalytic Processes in Materials Science
- Metal and Thin Film Mechanics
- MXene and MAX Phase Materials
- Advanced ceramic materials synthesis
- Asphalt Pavement Performance Evaluation
- Injection Molding Process and Properties
- Geophysical Methods and Applications
- Advanced Photocatalysis Techniques
- Rocket and propulsion systems research
- Dielectric materials and actuators
- Geomechanics and Mining Engineering
- Synthesis and properties of polymers
- Semiconductor materials and devices
Sichuan University
2017-2024
Yunnan University
2023-2024
Arizona Geological Survey
2021-2024
Institute of Geology and Geophysics
2024
Guangxi University
2005-2024
University of Science and Technology Beijing
2018-2024
Chinese Academy of Sciences
2024
Chongqing University of Science and Technology
2022-2024
University of Arizona
2021-2024
University of Chinese Academy of Sciences
2024
A series of experiments was conducted to study the performance and mechanisms Cemented Ultrafine Tailings Backfill (CUTB). Firstly, optimum fiber type selected by single factor multilevel test. Secondly, effects cement content, rice husk ash content length on backfill properties were analyzed orthogonal test microstructure test, influence mechanism revealed. Finally, fuzzy mathematics theory is used optimize ratio parameters. The results show, compared glass basalt fiber, polypropylene...
Rock-encased-backfill (RB) structures are common in underground mining, for example the cut-and-fill and stoping methods. To understand effects of cyclic excavation blasting activities on damage these RB structures, a series triaxial stepwise-increasing-amplitude loading experiments was conducted with cylindrical specimens (rock outside, backfill inside) different volume fractions rock (VF = 0.48, 0.61, 0.73, 0.84), confining pressures (0, 6, 9, 12 MPa), rates (200, 300, 400, 500 N/s). The...
Microseismic source mechanisms in shales often show similar double-couple events with one vertical nodal plane aligned the hydraulic fracture and other oriented horizontal. We interpret horizontal as fault where shearing represents bedding-plane slip driven by opening of a connected, fracture. Using precisely mapped microseismic locations from Barnett shale hydraulic-fracture completion, Rutledge et al. (2015) proposed model step-over or jog structures along bedding to describe sense-of-slip...
Hydraulic-fracture microseismicity is interpreted for cases in which persistent dip-slip or strike-slip mechanisms exhibit shear planes prevalently aligned close to the principal stress direction. Explaining preferential alignment terms of changes driven by elevated pore pressure on a Mohr diagram difficult. Instead, it proposed that microseismic shearing primarily strain hydraulic-fracture opening. The interpretation based analog structures and deformation commonly associated with natural...
Summary Reservoir simulation and prediction of production associated with hydraulic-fracturing require the input fracture geometry properties such as porosity retained permeability. Various methods were suggested applied for deriving discrete networks (DFNs) from microseismic data a framework modeling reservoir performance. Although are best diagnostics revealing volume rock fractured, its incompleteness in representing deformation induced presents challenge to calibrate represent complex...
Summary Natural joint structures in layered rock provide an analog for interpreting patterns of hydraulic-fracture microseismicity often observed unconventional gas reservoir. We interpret systematic source locations and mechanisms terms fringe cracks bedding-plane slip as the hydraulic fracture encounters layer interfaces. In this sense provides a direct picture tensile growth through reservoir, highlighting deformation at near bedding boundaries rips or along Understanding these processes...
Understanding the shear mechanical properties of shale reservoirs is great significance in study formation stability around horizontal wells and propagation evolution fractures for fracturing. However, existing direct test results are limited due to small sample sizes low rates. Based on previous experimental research results, anisotropic reservoir tests with different conditions were explored this study. It was found that mode, strain rate, normal stress have a significant impact...
Aiming to solve the problems related slow settling speed and long-term consumption of ultra-fine tailings in mine filling, effect flocculant type on flocculation performance was studied through static sedimentation experiments tailings. The microstructure observed analyzed using an electron microscope. On this basis, selection optimum dosage parameters carried out. results show that best addition amount AZ9020 anionic 30 g/t, a solution concentration 0.3%, stirring time more than 45 min....
Abstract Highly thermally conductive polymer composites are urgently required for effective heat dissipation in advanced electronic devices. Rational matching of thermal fillers and proper preparation method important obtaining a highly at low filler content. Here we report polyimide (PI) filled with graphene flakes (GF) polyhedral aluminum nitride (AlN), which simultaneously exhibit high conductivity, improved mechanical properties, excellent stability. PI composite films were readily...
In underground metal mines that use sublevel or stage open-stope and backfilling mining methods (SSOBMMs), there is a special structure around which both sides of the rock pillar are wrapped by backfill. As permanent part an mine, how much can backfill improve pillar’s compressive strength? What difference in mechanical properties between signal rock? To explore these questions, composite made cement-tailing (CTB) core (RC) was designed. Uniaxial triaxial strength tests scanning electron...