A5077005099- Rock Mechanics and Modeling
- Geophysical Methods and Applications
- Mineral Processing and Grinding
- Structural Response to Dynamic Loads
- Hydrology and Sediment Transport Processes
- High-Velocity Impact and Material Behavior
- Drilling and Well Engineering
- Mechanical Behavior of Composites
- Geoscience and Mining Technology
- Geotechnical Engineering and Underground Structures
- Hydraulic flow and structures
- Mechanical stress and fatigue analysis
- Geomechanics and Mining Engineering
- Geotechnical Engineering and Soil Mechanics
- Landslides and related hazards
- Soil erosion and sediment transport
- Corrosion Behavior and Inhibition
- Tunneling and Rock Mechanics
- Composite Structure Analysis and Optimization
- Concrete Corrosion and Durability
- Structural Load-Bearing Analysis
- Welding Techniques and Residual Stresses
- Coastal and Marine Dynamics
- Simulation and Modeling Applications
- Structural Engineering and Vibration Analysis
Ocean University of China
2022-2024
Northeastern University
2011-2024
Institute of Rock and Soil Mechanics
2017
This paper reviews the recent achievements made by our team in mitigation of rockburst risk. It includes development neural network modeling on risk assessment for deep gold mines South Africa, an intelligent microseismicity monitoring system and sensors, understanding evolution process using laboratory situ tests monitoring, establishment a quantitative warning method location intensities different types rockburst, measures dynamic control rockburst. The at Hongtoushan copper mine is...
In this paper, a novel three-dimensional (3D) unit cell structure with butterfly-like perforations was designed, and negative Poisson's ratio tunable stiffness were achieved in such geometry. The strain-stress relationship of structures different geometric parameters determined using the finite element method (FEM). Samples identical variables to those models fabricated via 3D printing technique, their ratios stress–strain relationships experimentally compared FEM results. Results showed...
Drilling and blasting remains the primary method of rock fragmentation in metal mining. However, vibration can adversely affect stability rock. Therefore, prediction is essential mining industry. This paper proposes a combination principal component analysis (PCA) support vector machine (SVM) model to predict vibration. Here, PCA was used simplify inputs SVM. Relative location monitoring point source, total charge, maximum charge per delay, number delays, burden, spacing, height, horizontal...
Deep-sea sediment disturbance may occur when collecting polymetallic nodules, resulting in the creation of plumes that could have a negative impact on ecological environment. This study aims to investigate potential solution using polyaluminum chloride (PAC) water jet. The effects PAC are examined through self-designed simulation system for deep-sea nodule collection and samples from mining area. experimental results showed optimal dose was found be 0.75 g/L. Compared with test conditions...
Blasting vibration could cause dynamic instability of rock masses within a critical steady state. To control the blasting vibration, it is necessary to understand complete response process under vibration. The Long Short-Term Memory (LSTM) technique uses blast monitoring data predict full waveform Based on LSTM, new prediction model proposed in this study. verify feasibility model, sample were constructed using well-known linear wave superposition formula. trained and predicted actual are...
This research aims to explore the fracturing behaviors of sandstone subjected pulsed high-voltage discharge (PHVD) under different static pressures. An experimental method rock induced by inter-hole PHVD was proposed. The pressure applied specimens, then proposed induce electrical breakdown testing loading. microscopic fracture morphology observed. influences direction and level on crack length fractal dimension effect were discussed. results indicated that in absence pressure, there are a...
Considering the problems related to hard rock blasting under high in-situ stresses at large depths, we conducted crater tests on sandstone specimens three static load conditions investigate strain field evolution of stress. The digital image correlation (DIC) technique was used monitor free surface. Thus, influence stress analyzed, and formation mechanism cracks surface elucidated. results indicate that a circular tensile zone formed without loading. direction maximum principal perpendicular...
Based on the “axial-output method”, time histories of radial and axial expansive pressures during hydration process static cracking agent (SCA) in a cylinder with various diameters were obtained by experiments. With load input taken as product normalized pressure amplitude coefficient, finite element model was established to simulate experimental chemical expansion SCA. The relationships between elastic modulus, then obtained. results indicate that modulus increases increasing pressures,...