No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The multi-scale, high-resolution and accurate structural modeling of rocks is a powerful means to reveal the complex failure mechanisms of rocks and evaluate rock engineering safety. Due to the non-uniformity and opacity of rocks, describing their internal microstructure, mesostructure and macro joints accurately, and how to model their progressive fracture …
Rock electrical experiments are essential means of researching the conductive properties of rocks and are fundamental to interpreting resistivity logging. Carbonate rocks have more complex pore structures than sandstone, …
The development of a geothermal system involves changes in the temperature field (T), seepage field (H), stress field (M), and chemical field (C) and the influence among them and injecting the heat extraction working fluid into the injection well that flows (migrating) through natural fractures and exchanges heat with the geothermal high-temperature rock. At the same …
In this study, the failure characteristics of self-made rock with internal flaws under shear were studied and a numerical simulation analysis was carried out. Firstly, based on basic physical and mechanical tests, the shear strength characteristics of rocks with built-in 3D defects were summarized. PFC3D simulation software was used to model the samples with flaws, and …
To accurately capture crack trajectory and failure morphology with continuum mesoscopic model-based methods in three-dimensional space, conventional global uniform refinement schemes may incur significant computational cost. This paper first presents a three-dimensional structured mesh refinement strategy to achieve the hierarchical discretization for …
The model captured the rock fragmentation process near the wellbore due to buckling and spalling. Thin fragments of rock similar to onion skins were produced, as observed in laboratory breakout ...
A process of the development of rocks discontinuous displacement, which can occur under man's impact in fractured rock massif in the gravitational field in the vicinity of steep sides of deep pits ...
This paper presents an ordinary state-based peridynamic model to simulate failure in porous rocks and its application in the rock excavation processes. Rock indentation is a …
In order to study the underground coal-gasification process, Aspen Plus software was used to simulate the lignite underground gasification process, and a variety of unit operation modules were selected and combined with the kinetic equations of coal underground gasification. The model can reflect the complete gasification process of the coal underground gasifier well, …
With Bruno, the accurate setting adjustments were easily found," Saku Pursio says. "To really play it safe in plant design, a crushability test of the rock or ore in 's rock laboratories, and the data input into the Bruno simulation software, will certainly provide the most accurate process simulation," he adds.
Since invented in 2003, rock-filled concrete (RFC) has gained much attention and has been successfully applied in more and more civil and hydraulic projects in China. This study developed a numerical framework to simulate self-compacting concrete (SCC) flows in the voids among rocks of RFC, which couples the lattice Boltzmann method and discrete element …
Ore blending in mineral processing plant is assessed using simulation. Residence time distributions assessment for different plant configurations. Mineral processing plant …
In the simulation of a joined rock mass, the progressive failure process can be effectively simulated. According to the results, it seems that the finite element parallel computing simulation ...
An Eibenstock granite (EG) thin section blank was used to observe thermal-induced cracks after subjecting it to a heating–cooling cycle to 1000 °C. To understand the real-time thermal cracking behavior during the heating and cooling processes, a grain-based discrete element thermo-mechanical coupled model duplicating the mineral morphological …
Rock avalanches typically entail the flow-like motion of angular rock blocks and fragments of diverse size. Numerical simulations are instrumental in understanding their dynamic process, supporting hazard and risk assessments. Simplified failure criteria, such as the Mohr-Coulomb or Drucker-Prager, are commonly adopted in landslide models relying on the …
Geothermal energy, recognized as a clean energy source, has attracted widespread attention for its extraction. However, it is located in deep and complex geological formations, presenting a significant challenge to the drilling operations of existing Polycrystalline Diamond Compact (PDC) drill bits. To further understand the rock-breaking mechanism of …
Several numerical simulations of fluid flow were performed using the Lattice Boltzmann method and image processing techniques to estimate the effective properties of 2-D porous rocks. The effective properties evaluated were the physical characteristics that allow fluid flow including the effective porosity, permeability, tortuosity, and average throat size to …
Laser drilling is a new concept of petroleum exploitation technology, which is expected to bring a technological revolution in the field of petroleum engineering. However, there is still a lack of corresponding experimental means and numerical calculation methods to simulate the laser drilling process. This work has designed and implemented the sandstone drilling test …
Numerical simulation of the rock fragmentation process subjected to static and dynamic (impact) loading was studied, this numerical model focused the effect of two drill bits (Wang et al. 2011).
In a drilling process for oil and gas exploration, understanding of the interaction between the cutting tool and the rock is important for optimization of the drilling process using ...
As deep oil and gas resources and Carbon Capture and Storage (CCS) are developed, enhancing drilling efficiency in hard rock formations has emerged as a critical technology in oil and gas extraction. The advancement of ultrasonic, high-frequency vibration rock-breaking technology significantly facilitates efficient rock crushing. When subjected to …
Simulation about breaking rock processing of hydraulic breaker on the bench . 4. CONCLUSION . From the results were studied above, we can see hydraulic breaker was effective in some .
There is a need within the production industry for digitalization and the development of meaningful functionality for production operation. One such industry is aggregate production, characterized by continuous production operation, where the digital transformation can bring operational adaptability to customer demand. Dynamic process simulations have the …
The mechanism of crack initiation and rock failure process is therefore controlled by mineral composition (grain size, shape) and texture (grain packing and contacts). ... H. & Chen, W. Numerical Simulation of Heterogeneous Rock Using Discrete Element Model Based on Digital Image Processing. Rock Mech Rock Eng 49, 4957–4964 (2016). https ...
Creep is the macroscopic manifestation of the process of generation, expansion, and penetration of microscopic cracks in a rock body. In this study, the GDEM continuous–discontinuous numerical ...
9 Steps in the Simulation Study Process 1) Problem Definition 2) Project Planning 3) System Definition 4) Model Formulation 5) Input Data Collection & Analysis 6) Model Translation 7) Verification & Validation 8) Experimentation & Analysis 9) Documentation & Implementation
Rock heterogeneity is one of the most important factors when numerically simulating the rock failure process and crack propagation. This paper presents an approach for capturing rock heterogeneity that combines peridynamic theory, digital image processing (DIP), and low-field nuclear magnetic resonance (NMR) imaging.
Summary Real-time hybrid simulation is a testing method that combines physical experiments and numerical simulations, ... To improve the scale of numerical simulation in real time, a testing framework based on Python and graphics processing unit was proposed in this paper. The maximum degrees of freedom of the numerical model exceeded 24,000 ...
Rock is a natural heterogeneous material, which consists of different minerals and is characterized by a pronounced microstructure. The micro-mechanisms, which occur during failure process are ...
IME 223. Process Improvement Fundamentals. 4 units Term Typically Offered: F, W, SP. Prerequisite: MATH 141. Recommended: IME 101. ... IME 420. Simulation. 4 units Term Typically Offered: F, W, SP. Prerequisite: IME 305; IME 326 or IME 327; or graduate standing. Queueing systems. Design and analysis of production and service systems using the ...
