Experimental investigation on rock fracturing performance under high-pressure foam impact

Liu, Songyong; Cui, Yuming; Cui, Song; Li, Zhiqiang; Zhou, Fangyue; Wang, Haodong

doi:10.1016/j.engfracmech.2021.107838

Cited by 7 publications

(1 citation statement)

References 23 publications

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“…After crack initiation in coal, the crack continues to expand under the action of water wedge. Water wedge splitting is a physical phenomenon, tension-water wedge fracture is caused by the combined stress of shear, tension, and pressure on the rock mass, 27 leading to the crack extension. To study the water wedge effect, a crack is taken for research ( Figure 2 ).…”

Section: Mechanism Analysis and Numerical Simulation Of High Voltage ...mentioning

confidence: 99%

Crack Damage Propagation and Morphology Distribution of Hydraulic Electric Pulse Fractured Coal

Bao

Zhang

et al. 2023

ACS Omega

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This work discusses the damage and failure effect of a hydraulic electric pulse and the law of crack growth on coal. The impact and failure effect of a water shock wave and the mechanism of crack initiation, propagation, and arrest were studied by numerical simulation and the fracturing test of coal, combined with CT scanning, PCAS software, and Mimics 3D reconstruction technology. The results show that a high voltage electric pulse that increases permeability is an effective artificial crack making technology. The crack spreads radially along the borehole, and the damage degree, number, and complexity were positively correlated with the discharge voltage and discharge times. The crack area, volume, damage factor, and other parameters increased steadily. The cracks in the coal first start from two symmetrical angles, and finally distribute in a 360 deg circumferential direction, forming a multiangle crack spatial network structure. The fractal dimension of the crack group increases, the number of microcracks and the roughness of the crack group increases, the overall fractal dimension of the specimen decreases, and the roughness between cracks weakens. The cracks then form a smooth coal-bed methane migration channel. The research results can provide some theoretical guidance for the evaluation of crack damage propagation and the effect of electric pulse fracturing in water.

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Section: Mechanism Analysis and Numerical Simulation Of High Voltage ...mentioning

confidence: 99%

Crack Damage Propagation and Morphology Distribution of Hydraulic Electric Pulse Fractured Coal

Bao

Zhang

et al. 2023

ACS Omega

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Study on the evolution law and quantitative characterization of micro-crack propagation in the compressive failure process of rocks

Li,

Huang,

Huang

et al. 2024

Engineering Failure Analysis

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Study on rock fracture mechanism based on the combustion and explosion characteristics of high-energy expansive agent

Wei

Wang

Cao

et al. 2023

Engineering Fracture Mechanics

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Experimental investigation on rock fracturing performance under high-pressure foam impact

Cited by 7 publications

References 23 publications

Crack Damage Propagation and Morphology Distribution of Hydraulic Electric Pulse Fractured Coal

Crack Damage Propagation and Morphology Distribution of Hydraulic Electric Pulse Fractured Coal

Study on the evolution law and quantitative characterization of micro-crack propagation in the compressive failure process of rocks

Study on rock fracture mechanism based on the combustion and explosion characteristics of high-energy expansive agent

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