A5100658573- Geomechanics and Mining Engineering
- Rock Mechanics and Modeling
- Energetic Materials and Combustion
- Geotechnical and Geomechanical Engineering
- Geoscience and Mining Technology
- Thermal and Kinetic Analysis
- Mechanical Behavior of Composites
- Composite Structure Analysis and Optimization
- Coal Properties and Utilization
- Geotechnical Engineering and Underground Structures
- Numerical methods in engineering
- Combustion and Detonation Processes
- Vibration and Dynamic Analysis
- Geological Modeling and Analysis
- Textile materials and evaluations
- High-Velocity Impact and Material Behavior
- Geotechnical Engineering and Analysis
- Mechanical stress and fatigue analysis
- Structural Response to Dynamic Loads
- Rocket and propulsion systems research
- Mineral Processing and Grinding
- Mining and Gasification Technologies
- Technology Assessment and Management
- High-Temperature Coating Behaviors
- High Entropy Alloys Studies
Xiangtan University
2016-2024
Anhui University of Science and Technology
2018-2024
Nanjing University of Aeronautics and Astronautics
2004-2024
National University of Defense Technology
2023-2024
PLA Rocket Force University of Engineering
2022-2023
China University of Mining and Technology
2022-2023
Defence Electronics Research Laboratory
2023
Guilin Medical University
2020
China Academy of Engineering Physics
2005-2019
Mianyang Normal University
2019
Abstract Excavation‐induced rock failure and deformation near an underground opening boundary is closely associated with the intermediate principal stress, strain softening mass dilation. By combining theoretical analysis numerical simulation to explore mechanical evolution of roadway surrounding during excavation. The elastic–plastic criterion solutions for displacement, plastic zone a circular were deduced by including dilation, based on Drucker–Prager nonassociated flow rule. Furthermore,...
Coal is the primary source of energy in China’s structure system. With large‐scale mining mineral resources, a large amount mine water will be produced process development, construction, and production, which pollute damage ecological environment water. At present, China vigorously advocates coal revolution, implements low‐carbon economy, carries out clean production development utilization. Green mining, precision other strategic ideas have been applied to guide practice. This paper does an...
Coal seam mining causes movement and deformation of the overlying rock mass ground surface, directly resulting in serious damage to surface construction facilities. To investigate mechanism characteristics mass, three-dimensional numerical simulation model test are carried out on an open-pit mine slope. The results show that sliding instability slope can be identified based analysis. affects near inner dump. closer boundary, greater subsidence mass. maximum displacement occurs has great...
The electrochemical behavior of thermally sprayed Zn–Cu–Ti coating corroded in 3.5 wt% NaCl neutral salt spray for different days was investigated by measurements. Electrochemical investigation shows that pitting corrosion occurs on the coating. Sacrificial anode protection and product play a dominant role. Coating can be divided into five stages: dissolution surface oxides, deposition products, stable coating, formation development occluded cell corrosion, accelerated stage. degradation...
In view of the problems large deformation surrounding rock, high in-situ stress, and serious soft fracture rock stratum in deep roadway, instability failure mode roadway is analyzed theoretically. The FLAC3D software used to establish a three-dimensional numerical model damage under load, study displacement, plastic expansion process evolution roadway. mechanical response mechanism bending deformation, elastoplastic transformation, unloading verified by MATLAB analysis, space-time...
Extraction of gas from low-permeability thick coal seams poses challenges globally, attributed to low extraction efficiency, limited enrichment content, and complexities. Investigating static fracturing in holds substantial engineering significance practical utility. This research delves into the current conditions Western region, characterized by permeability challenging seams. Through utilization FLAC
Abstract Various methods to apply multiple boundary conditions in the differential quadrature method are summarized and discussed. Two of them new approaches appearing for first time. Numerical examples demonstrate accuracy applying conditions. Copyright © 2004 John Wiley & Sons, Ltd.
5,5'-Bitetrazole-1,1'-dioxydihydroxylamine salt (TKX-50), a high-energy energetic material, possesses good safety and energy properties. The characteristic data of TKX-50 are commonly generated via theoretical simulation experimental measurements. Interestingly, the detonation velocity is higher than HMX, but specific kinetic opposite. Thus, systematic study on decomposition mechanism important to establish reasons for this variation in energy. Although thermal has been reported,...
ABSTRACT By means of density functional theory (DFT), the general gradient approximation method (GGA), and Beck LYP hybrid DNP basis set, nitro group Mulliken charges (Q NO 2 ) are calculated defined to assess correlate with impact sensitivities (H 50 compounds: very negative Q high H . calculating, analyzing, comparing, we find that can be regarded as a structural parameter estimate sensitivity has more availability in almost all compounds contrast length C‒NO 2, N‒NO , or O‒NO bond R ‒...
Bistetrazole energetic ionic salts, such as dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) and diamino (ABTOX), are new insensitive materials have great potential applications because of their good energy safety performance. Prior to pure explosive preparation into PBX, the interactions between components must be evaluated. Examination bistetrazole salt ammonium nitrate in thermal decomposition is beneficial revealing interactive mechanism these two kinds decomposition, well...
Aiming at the problems of intensified deformation and serious stress damage stope overburden during mining in deep typical geological environment, taking face a mine northwest as research background, characteristics influencing factors collapse environment are analyzed, comprehensive evaluation system affecting instability is established, temporal spatial evolution law roof failure obtained by using “three-zone” distribution theory overburden, analytic hierarchy process, numerical simulation...
Straw power generation is a good substitute for fuel coal of plant, but the shortage straw resources supply severely restricts development industry in China. To promote generation, government needs to adopt fiscal subsidies encourage members chain. this end, paper studies decision-making subsidy on First, influencing factors farmers-brokers-power plants chain are analyzed, and dynamic game models under incentives built. Second, impacts three members' analyzed. Then, different incentive...
The bistetrazole N-oxide energetic ionic salt dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) has attracted great interest as it breaks through the limitations of traditional nitro group, high detonation velocity and moderate impact sensitivity. Reports show that TKX-50 transforms into 5,5'-bis(2-hydroxytetrazole) (BTO) precursor, which is further decomposed partly converted to diamino (ABTOX). Studying effects H+, NH3OH+ NH4+ on thermal decomposition mechanism anion would provide...
With the response to climate change and promotion of energy transition becoming consensus international community, global variable market is entering a period rapid development. China proposed that "China will vigorously support green low-carbon development in developing countries, no longer build new overseas coal power projects", which provide direction for high-quality cooperation era. This paper firstly systematically sorts out current situation Chinese enterprises' participation...
How to simulate fracture mode and crack propagation path in a plate with multiple cracks is an attractive but di cult issue mechanics.Peridynamics recently developed nonlocal continuum formulation that can spontaneously predict the nucleation, branch materials structures through meshfree discrete technique.In this paper, peridynamic motion equation boundary traction improved by simplifying transfer functions.We calculate critical cracking load angles of under uniaxial tension.The results are...