☆ 4.5 Article

Effects of Static Pressure on Failure Modes and Degree of Fracturing of Sandstone Subjected to Inter-Hole Pulsed High-Voltage Discharge

MINERALS (2023)

Related references

Note: Only part of the references are listed.

Article Energy & Fuels

Numerical Modeling of the Effects of Pore Characteristics on the Electric Breakdown of Rock for Plasma Pulse Geo Drilling

Mohamed Ezzat et al.

Summary: Drilling costs can be a significant portion of geothermal project investment, and reducing these costs through techniques like Plasma Pulse Geo Drilling (PPGD) can greatly decrease overall project expenses. This paper presents a numerical model to study how pore characteristics affect the efficiency of PPGD, which is a contactless drilling technique that uses high-voltage pulses to fracture rock without mechanical abrasion.

ENERGIES (2022)

Add to Collection

Article Chemistry, Physical

Simulation of Electrical and Thermal Properties of Granite under the Application of Electrical Pulses Using Equivalent Circuit Models

Kyosuke Fukushima et al.

Summary: This study developed a simulation method using equivalent circuits to better understand the crushing process in granite under high-voltage electrical pulses. Electric field distributions were calculated, along with other associated electrical phenomena such as heat and temperature changes. The importance of void volume in calculating electrical properties was observed, and the use of equivalent circuit models considering both electrical conductivity and dielectric constant accurately represented the electrical properties of granite under HV electric pulse application.

MATERIALS (2022)

Add to Collection

Article Energy & Fuels

Prediction model of high-voltage pulse boring rock-breaking process and intelligent identification of model parameters

Changping Li et al.

Summary: High-voltage electro-pulse boring (EPB) technology is characterized by high drilling efficiency, low energy consumption, and low drilling cost. A prediction model based on energy conservation law, an EPB test system, and an improved hybrid intelligent algorithm have been developed to accurately predict process parameters, optimize identification of model parameters, and improve convergence speed, ultimately enhancing drilling efficiency.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2022)

Add to Collection

Article Energy & Fuels

Simulation and experimental study on the influence of bit structure on rock-breaking by high-voltage electro-pulse boring

Longchen Duan et al.

Summary: This article studies and experiments on the bit structure in high-voltage electro-pulse boring (EPB) technology. Through numerical simulation and experimental research, it can guide the design of electrode bit structure, reduce energy consumption, and improve drilling efficiency.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2022)

Add to Collection

Article Chemistry, Physical

Equivalent Circuit Models: An Effective Tool to Simulate Electric/Dielectric Properties of Ores-An Example Using Granite

Kyosuke Fukushima et al.

Summary: The equivalent circuit model is widely used in high-voltage engineering to simulate the behavior of insulation/dielectric materials. In this study, equivalent circuit models were prepared to represent the electric and dielectric properties of minerals and voids in a granite rock sample. The values of the electric circuit parameters were determined from the known parameters of the minerals in granite. The developed equivalent circuit model can be applied to any other rock.

MATERIALS (2022)

Add to Collection

Article Engineering, Mechanical

Dynamic mechanical responses and crack evolution of burst-prone coal with a single prefabricated fissure

Tong Zhang et al.

Summary: The mechanical responses and crack evolution of burst-prone coal under dynamic disturbance were investigated in this study. The results showed a positive correlation between the peak load and the fissure angle. The main cracks exhibited different morphologies under different fissure angles. In addition, the dissipated energy exhibited a four-phase pattern. These experimental results provide reference for preventing the occurrence of burst-prone coal in engineering practice.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2022)

Add to Collection

Review Mathematics, Interdisciplinary Applications

Fractals: An Eclectic Survey, Part II

Akhlaq Husain et al.

Summary: This paper is the second part of a series focused on the engineering, industrial, commercial, and futuristic applications of fractals. It discusses the applications of fractal landscape generation, fractal antennas, and fractal image compression in detail.

FRACTAL AND FRACTIONAL (2022)

Add to Collection

Article Mathematics, Interdisciplinary Applications

Fractals: An Eclectic Survey, Part-I

Akhlaq Husain et al.

Summary: This article provides an overview of the applications of fractals in a variety of fields, including aesthetics, art, architecture, engineering, industry, commerce, and future applications.

FRACTAL AND FRACTIONAL (2022)

Add to Collection

Article Geochemistry & Geophysics

Effects of high-temperature thermal treatment on the porosity of red sandstone: an NMR analysis

He Zhang et al.

Summary: Research shows that red sandstone undergoes distinct changes in pore and strength characteristics after treatment at different temperatures, influenced by factors such as pore structure, grain melting, and gas interactions.

ACTA GEOPHYSICA (2021)

Add to Collection

Article Engineering, Geological

Experimental study on the failure process of sandstone subjected to cyclic loading and unloading after high temperature treatment

Weijing Xiao et al.

Summary: The experimental results show that the stress-strain curve, Young's modulus, and crack volume strain of sandstone samples exhibit unique characteristics during cyclic loading and unloading after high-temperature treatment. The dissipation energy of sandstone samples increases significantly after high-temperature treatment compared to samples treated at lower temperatures.

ENGINEERING GEOLOGY (2021)

Add to Collection

Article Engineering, Geological

Numerical and experimental study of the presplit blasting failure characteristics under compressive stress

Liyun Yang et al.

Summary: This study investigates the deformation characteristics and failure mechanism of deep hole presplit blasting (DHPB) under different stress conditions through numerical simulation and model testing. It suggests avoiding the blasthole connection orientation and compressive stress orientation from being at a 90-degree angle when performing presplit blasting, and aiming for the minimum principal stress orientation to be at a 90-degree angle to the blasthole connecting line.

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING (2021)

Add to Collection

Article Engineering, Mechanical

Damage characteristics and laws of micro-crack of underwater electric pulse fracturing coal-rock mass

Xiankai Bao et al.

Summary: This study investigates the mechanism of crack initiation, damage characteristics and propagation law of high-voltage pulse hydraulic fracturing in coal. It shows that the cracks in coal-rock mass under high-voltage pulse discharge in water are mainly I-II composite cracks with tensile-shear damage, and their growth rate is related to Rayleigh wave speed. The crack propagation and extension in coal-rock mass are influenced by the preset crack angle, peak pressure of water shock wave, and direction of maximum principal stress.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2021)

Add to Collection

Article Engineering, Mechanical

Failure characteristics and meso-deterioration mechanism of pre-stressed coal subjected to different dynamic loads

Xibing Li et al.

Summary: This study investigated the influence of pre-static load and dynamic load on the fracture evolution and destruction states of coal using experimental and theoretical approaches. The results showed that pre-static load can affect the post-peak dynamic stress-strain curve of the specimen, while dynamic load plays a role in the dynamic failure state of coal.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2021)

Add to Collection

Article Engineering, Geological

On the Mechanism of High-Voltage Pulsed Fragmentation from Electrical Breakdown Process

Xiaohua Zhu et al.

Summary: The paper delves into the mechanism of partial electrical breakdown in high-voltage pulsed fragmentation (HVPF) technology and provides a method for designing and optimizing parameters, establishing a theoretical basis for the application of multi-pulse electrical breakdown technology. This research contributes to improving the efficiency and development potential of rock-breaking technology.

ROCK MECHANICS AND ROCK ENGINEERING (2021)

Add to Collection

Article Construction & Building Technology

Numerical study on the behavior of blasting in deep rock masses

Xiaohan Li et al.

Summary: The study found that in-situ stresses can increase compressive stress and reduce tensile stress caused by blasting load, leading to a decrease in the area of the crushed zone. Under anisotropic pressure conditions, the crushed zone is elliptical in shape, with the gap between the long and short axes widening as the stress difference between horizontal and vertical directions increases. Cracks tend to propagate in the direction of higher stress. Connecting cracks can form at lateral pressure coefficients ranging from 0.25 to 3.0 at a buried depth of 1000 m when blastholes are drilled horizontally, and increasing buried depths and the angle between blasthole centerlines can limit the formation of connecting cracks.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2021)

Add to Collection

Article Engineering, Geological

Simulating electropulse fracture of granitic rock

Stuart Walsh et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2020)

Add to Collection

Article Engineering, Geological

An experimental study of a novel liquid carbon dioxide rock-breaking technology

Qi-Yue Li et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2020)

Add to Collection

Article Engineering, Chemical

Energy analysis of the effectiveness of microwave-assisted fragmentation

Ferri Hassani et al.

MINERALS ENGINEERING (2020)

Add to Collection

Article Engineering, Geological

Crack propagation behavior in slit charge blasting under high static stress conditions

Renshu Yang et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2019)

Add to Collection

Article Acoustics

An Electro Breakdown Damage Model for Granite and Simulation of Deep Drilling by High-Voltage Electropulse Boring

Changping Li et al.

SHOCK AND VIBRATION (2019)

Add to Collection

Article Computer Science, Information Systems

Determination of Liberation Degree of Mechanically Processed Waste Printed Circuit Boards by Using the Digital Microscope and SEM-EDS Analysis

Pedro Pereira Goncalves et al.

ELECTRONICS (2019)

Add to Collection

Article Engineering, Mechanical

A critical condition of the zonal disintegration in deep rock masses: Strain energy density approach

Y. D. Shou et al.

THEORETICAL AND APPLIED FRACTURE MECHANICS (2018)

Add to Collection

Article Engineering, Geological

Creep and Long-Term Permeability of a Red Sandstone Subjected to Cyclic Loading After Thermal Treatments

Sheng-Qi Yang et al.

ROCK MECHANICS AND ROCK ENGINEERING (2018)

Add to Collection

Article Energy & Fuels

Experimental investigation on anthracite coal fragmentation by high-voltage electrical pulses in the air condition: Effect of breakdown voltage

Fazhi Yan et al.

FUEL (2016)

Add to Collection

Article Engineering, Geological

The Dynamic Fracture Process in Rocks Under High-Voltage Pulse Fragmentation

Sang Ho Cho et al.

ROCK MECHANICS AND ROCK ENGINEERING (2016)

Add to Collection

Article Engineering, Chemical

Investigation on pre-weakening and crushing of phosphate ore using high voltage electric pulses

Seyed Mohammad Razavian et al.

ADVANCED POWDER TECHNOLOGY (2014)

Add to Collection

Article Materials Science, Multidisciplinary

Quasi-static and dynamic fracture behaviour of rock materials: phenomena and mechanisms

Q. B. Zhang et al.

INTERNATIONAL JOURNAL OF FRACTURE (2014)

Add to Collection

Article Computer Science, Interdisciplinary Applications

A tensile damage model for rocks: Application to blast induced damage assessment

E. Hamdi et al.

COMPUTERS AND GEOTECHNICS (2011)

Add to Collection

Article Construction & Building Technology

Acoustic emission sources of breakdown failure due to pulsed-electric discharge in concrete

Ni Nyoman Kencanawati et al.

CONSTRUCTION AND BUILDING MATERIALS (2011)

Add to Collection

Article Optics

The effect of interaction time and saturation of rock on specific energy in ND:YAG laser perforating

M. Ahmadi et al.

OPTICS AND LASER TECHNOLOGY (2011)

Add to Collection

Article Materials Science, Multidisciplinary

Three-dimensional investigation of the texture and microstructure below a nanoindent in a Cu single crystal using 3D EBSD and crystal plasticity finite element simulations

N Zaafarani et al.

ACTA MATERIALIA (2006)

Add to Collection

Article Engineering, Geological

Predicting rock failure around boreholes and drives adjacent to stopes in Indian mines in high stress regions

PK Rajmeny et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2002)

Add to Collection

Article Engineering, Chemical

Liberation of valuable inclusions in ores and slags by electrical pulses

U Andres et al.

POWDER TECHNOLOGY (2001)

Add to Collection

Article Engineering, Electrical & Electronic

Application of pulsed HV discharges to material fragmentation and recycling

H Bluhm et al.

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION (2000)

Add to Collection

© Peeref 2019-2024. All rights reserved.