A5016356006- Rock Mechanics and Modeling
- Geomechanics and Mining Engineering
- Geoscience and Mining Technology
- Geotechnical and Geomechanical Engineering
- Coal Properties and Utilization
- Structural Response to Dynamic Loads
- Tailings Management and Properties
- Technology and Security Systems
- Tunneling and Rock Mechanics
- Landslides and related hazards
- Engineering Technology and Methodologies
- Seismic Imaging and Inversion Techniques
- Granular flow and fluidized beds
- Advanced Computational Techniques and Applications
- Advanced Algorithms and Applications
- Seismic Waves and Analysis
- Geophysical Methods and Applications
- Civil and Geotechnical Engineering Research
- Mineral Processing and Grinding
- Grouting, Rheology, and Soil Mechanics
- Advanced machining processes and optimization
- Hydrocarbon exploration and reservoir analysis
- Geological and Geophysical Studies
- Geological Studies and Exploration
- Mine drainage and remediation techniques
Chongqing University
2022-2025
China University of Mining and Technology
2016-2020
Shandong University of Science and Technology
2020
Sinopec (China)
2015
Gansu Coalfield Geology Bureau
2012
The layout of acoustic emission sensors plays a critical role in non-destructive structural testing. This study proposes grid-based optimization method focused on multi-source location results, contrast to traditional sensor methods that construct correlation matrix based and one source location. Based the seismic travel time theory, proposed establishes objective function minimum differences, which is solved through particle swarm (PSO). Furthermore, accuracy across various configurations,...
The permeability of a coal seam is crucial factor in gas extraction. Poor seams can lead to difficulties over-pumping as well high emissions after mining. This issue particularly prominent when mining extra-thick with hard roofs, and it the major problem that restricts safe efficient seams. In context Datong mine area, field investigation into emission patterns working face reveals volume correlates closely variations pressure, demonstrating degree consistency. mechanism irregular was...
To investigate the mechanism of ground hydraulic fracturing technology in preventing mine earthquakes induced by hard–thick roof (HTR) breakage coal mines, this study established a Timoshenko beam model on Winkler foundation incorporating elastoplasticity and strain-softening behavior coal–rock masses. The following conclusions were drawn: (1) periodic breaking step distance 15.8 m thick HTR 61,304 Workface Tangjiahui was calculated as 23 m, with an impact load 15,308 kN support, differing...
Abstract Aiming at serious deformation and failure of large‐section coal roadway under mined zones in ultra‐thick seam, its characteristics are analyzed based on the field measurement. This paper reveals mechanism roof separation, leakage, right rib extrusion. Based mechanism, two kinds secondary support schemes proposed, that is, “grouting + I‐steel bolt” (scheme I) U steel anchor cable” II). The industrial experiment is carried out 1070 auxiliary transportation Tashan Coal Mine. measured...
Abstract The coal production exploited from extra‐thick seams accounts for 45% of China's total production. With large output, the require that chamber section be more than 100 m 2 . In case parting (the noncoal rock, usually mudstone, sandwiched in seam) seams, integrity will damaged and large‐section is extremely easy to occur rib spalling roof leakage, which increase chamber's supporting difficulty. To solve such problems, this paper took electromechanical Tashan Coal Mine as engineering...
In order to reveal mining pressure in the workface using a gangue backfilling method and caving Pingdingshan No. 12 coal mine, this paper establishes numerical analysis model for different advance lengths of based on geological conditions. By models field measurements, following conclusions about behavior mixed were drawn. (1) As mixing face advances, its goaf is continuously compacted. Therefore, vertical stress roof increases gradually. (2) Because has certain supporting effect roof, peak...
Abstract The hard roof in coal mines will induce strong pressure problems for the working face and lanes, which seriously affect safe efficient production of mine. For these issues, our team developed a new technology cutting by composite blasting. With technology, penetrating process is key to directionally cut roof. Thus, an arbitrary Lagrange–Euler method proposed calculate process. In this method, it was taken that Jones–Wilkins–Lee constitutive model, Johnson–Cook Holmquist–Johnson–Cook...
Abstract To control roadway under small abandoned mines in ultrathick coal seam, this paper analyzed its deformation and failure characteristics. As a result, the occurred roof leakage right rib extrusion. Based on above characteristics, secondary support schemes were put forward. predict effects of roadway, numerical model was built to analyze schemes. Besides, industrial test carried out. From simulation, significant increase could be found vertical stress bearing capacity ribs after...
Abstract In order to effectively predict and control the rib spalling roof leakage, it is necessary reveal deformation failure mechanism of chamber propose corresponding surrounding rock technology. Based on uniaxial compression experiments numerical simulations, concluded that coal body damage dominated by shear during compression, which indicates some extent main form in chamber. Then combined finite discrete element method used establish a model evolution law fracture rock. The simulation...
Abstract Rock bursts are one of the most common dynamic disasters in coal mines and seriously affect safety production. At present, there three types rock bursts: fault‐structure, fold‐structure, thick/hard‐roof bursts. First, paper proposed an innovative technology for mine ground fracturing to control those Then, new method, its devices, process, monitoring technique cracks were introduced. Next, we analyzed detailed procedures principles absorbing energy, blocking stress transmission,...
Abstract Based on the interpretation of seismic profiles and hydrocarbon accumulation simulation, characteristics salt-related structures reservoirs in southern margin Precaspian Basin are analyzed. Salt diapirs salt walls main structure types study area, with welds, rolls or bedded layers playing a connecting role between them. There two mode types, one associated welds postsalt formations heterogeneous presalt formations, divided by layer. The 2D experimental modeling oil migration...
Abstract Multiple-layered coal seams widely exist in main mining areas of China. When these are exploited, the pillar method is always employed. This leads to many pillars left upper as a protective barrier. As result, residual will not only cause loss resources but also could trigger environmental issues and serious mine disasters. A theoretical model was built analyse effect pillars. From model, it found that four stress concentration were formed by To address pillars, Datong Coal Mine...
As the development characteristics of cracks chamber are closely related to bolt and cable anchoring parameters, original rock stress surrounding rock, fracture degree, this paper proposes control method for in extra‐thick coal seam by crack characteristics. Based on numerical model analysis, generates a large amount shear cracks. Then, these further extend expand. When penetrate each other, bearing capacity decreases sharply, corresponding displacement also increases significantly. above...
Abstract According to the failure law of 1070 main roadway, this paper proposes a reasonable position for large section roadways under small coal mines and design seven roadway positions. RS2 software was used establish numerical model select roadway. The influences positions on roof separation amount, subsidence, lateral displacement ribs, vertical stress ribs areas were revealed. On basis influence laws, could be determined. In study, center distance 5 m deemed position. Finally, an...