A5010674108- Rock Mechanics and Modeling
- Geoscience and Mining Technology
- Geomechanics and Mining Engineering
- Coal Properties and Utilization
- Grouting, Rheology, and Soil Mechanics
- Crystallization and Solubility Studies
- Crystal structures of chemical compounds
- X-ray Diffraction in Crystallography
- RNA and protein synthesis mechanisms
- Geotechnical and Geomechanical Engineering
- Metal complexes synthesis and properties
- Caching and Content Delivery
- Magnetism in coordination complexes
- Luminescence Properties of Advanced Materials
- Protein Structure and Dynamics
- Tunneling and Rock Mechanics
- Innovative concrete reinforcement materials
- Advanced Decision-Making Techniques
- Dam Engineering and Safety
- Perovskite Materials and Applications
- Cloud Computing and Remote Desktop Technologies
- Genomics and Phylogenetic Studies
- Mobile Ad Hoc Networks
- Metal-Organic Frameworks: Synthesis and Applications
- Concrete and Cement Materials Research
Henan Polytechnic University
2011-2025
State Administration of Work Safety
2021-2024
Abstract A two-dimensional unsteady seepage model for coal using a finite element program is developed, and the temporal variations of key factors such as water pressure hydraulic gradient are analyzed in this paper. Additionally, triaxial rock mechanical experiment utilized pneumatic fracturing equipment on raw samples to investigate both processes conducted. Through these experiments, relationship between crack formation expansion examined. The analysis reveals that pore at inlet reaches...
With the increase of coal seam mining intensity in western area, which has typical geological characteristics shallow burial depth, thin bedrock and thick loose layer, structure overburden rock also changed greatly. When there is only one key layer it close to seam, strata pressure surface crack development law working face are different from those previous research results. Based on background 52,307 large height Daliuta Coal Mine, this paper adopts similar simulation numerical techniques...
With the deep extension of coal mining in China, fault water inrush has become one major disasters threatening safety production mine. Based on control equations steady state and non-Darcy seepage fractured rock mass, multi-parameter nonlinear dynamic mass are established this paper. dynamics theory, function variable system is derived, influence gradual change flow factors structural stability studied. The research achievements show that there three branches equilibrium system....
At present, the tunnel construction engineering is increasingly transferring to southwest mountainous areas with complex terrain and geological conditions in China presents a trend of “large buried depth, long line, high stress, strong karst, water pressure, structure frequent disasters.” Taking inrush disaster karst fault zone as research object, an evolutionary mechanical model rock damage under coupling action stress-seepage proposed this paper. Besides, based on Comsol Multiphysics...
Abstract In order to reveal the disastrous mechanism of seepage instability karst collapse column considering variable mass effect, a fluid–solid coupling mechanical model water inrush is established, by random distribution characteristics column. Taking Qianjin coal mine as research background, based on Weibull theory, heterogeneous rock described, and COMSOL Multiphysics numerical simulation software employed simulate changes in columns under different conditions homogeneity, pressure,...
With the development of coal mining in rocky desertification area Southwest China, water burst is becoming an important disaster mine. In order to grasp evolution characteristics gushing channels area, 1402 working face Xintian Coal Mine taken as research object, and occurrence aquifers on roof analyzed, filling path explored. Besides, passage seam are comprehensively by methods physical similarity simulation, numerical microseismic monitoring. The results show that key resource atmospheric...
For the sake of studying catastrophe mechanism stress-fissure coupling field in mining close distance seams southwest China, a test working face Guizhou province China is adopted and researched by methods numerical calculation similar experiment. When advances to 180 m 4# coal seam experiment, overlying rock breaks central base plate Yulongshan limestone, conductive fractures run through Changxing limestone karst cave cave. 1402 350 m, top vertical caves middle model produces extrusion...
Abstract C 15 H N 4 O 8 ClHg, monoclinic, P 2 1 / n (no. 14), a = 10.660(8) Å, b 9.523(8) c 18.275(15) β 99.248(12)°, V 1831(2) Å 3 , Z 4, R gt ( F ) 0.0267, wR ref 0.0696, T 296(2) K.
Abstract C 26 H 20 N 8 O 2 Cl Ni, orthorhombic, Pbcn (no. 60), a = 11.737(10) Å, b 9.309(8) c 23.72(2) V 2592(4) Å 3 , Z 4, R gt ( F ) 0.0361, wR ref 0.0934, T 296 K.
A new nonlinear method is proposed for predicting the mine water inrush. According to fractal theory, phase space of time series obtained from inrush reconstructed. And minimum embedding dimension determined with Cao method, then used input node support vector machines. The prediction model established based on well in Fang Shan predicted this method. results show that they coincide observing values better. Different dimensions chosen predict inrush, and when four, its precision highest....
In order to analyze the phenomenon of water inrush from faults theoretically, it is essential make simplification and takes only most significant factors related problem into theoretic model, such as existence source, pressure, thickness block, mining failure floor, fault displacement etc. Fifteen representative engineering cases coal floor were taken training samples. A correspondent forecast model quantity was established based on principle Mahalanobis distance discriminant analysis...