Simulation and experimental research of laser scanning breaking granite

Deng, Rong; Liu, Jianping; Kang, Min-Soo; Zhang, Wenting

doi:10.1016/j.optcom.2021.127403

Cited by 16 publications

(2 citation statements)

References 11 publications

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“…The results showed that when the well depth was 100-120 mm, the sealing length was 30-10 mm, and the foam pressure was 15-16.5 MPa, the rock failure mode changed from blasting pit to stripped boulder. Deng et al (2022) created a physical model using rectangular and circular laser points to scan the broken rock, and verified the accuracy of the model through a combination of experiments and numerical simulations. Li et al (2021) used a hydraulic fracturing system and simulated the cutting system to cut rock samples after fracturing, and found that the cutting torque and cutting resistance were significantly reduced after fracturing.…”

Section: Introductionmentioning

confidence: 99%

Analysis of dynamic characteristics of an experimental bench of high-pressure water fracturing assisted cutting

Liu¹,

Zhang²,

Sun³

et al. 2023

Journal of Theoretical and Applied Mechanics

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Aiming at the problem that the cutting efficiency of a drum shearer is low when mining hard coal seams, an experimental bench of high-pressure water fracturing assisted cutting is designed. Compared with normal ones, the maximum equivalent stress of the improved experimental bench is reduced by 55.38%, and the maximum total deformation is reduced by 27.23%. According to the results of dynamic response analysis, it is concluded that the experimental bench of high-pressure water fracturing assisted cutting is stable and reliable under extreme working conditions, and meets design requirements for strength and stiffness.

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Section: Introductionmentioning

confidence: 99%

Analysis of dynamic characteristics of an experimental bench of high-pressure water fracturing assisted cutting

Liu¹,

Zhang²,

Sun³

et al. 2023

Journal of Theoretical and Applied Mechanics

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show abstract

“…TBMs and cantilever boring machines come to mind as examples, both have advanced quickly in recent years and are widely used in coal mines and tunneling projects (Liao et al., 2008). They have been shown to be very beneficial in a number of areas, including economic efficiency, environmental protection, and construction safety (Deng et al., 2022). TBM will have a wide range of application possibilities in mines with extensive mining regions and widely dispersed ore bodies since it is also recognized as one of the effective techniques to large-scale mining in metal mines.…”

Section: Introductionmentioning

confidence: 99%

Effect of strong dielectric substances on the damage characteristics of rocks exposed to microwave radiation: Insight from experiments and mechanisms

Gao

Xiong

et al. 2023

International Journal of Damage Mechanics

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It has been demonstrated that microwave pretreatment can weaken rocks, reduce tool wear, and improve mechanical rock breaking efficiency. The dielectric properties of rock minerals are a major factor affecting the ability of rocks to absorb microwaves, so it is important to conduct experimental research on rock modification to improve the microwave absorption capacity of rocks. The concept of “microwave-assisted absorbing reagents” has been proposed to increase the microwave absorption capacity of rocks. Sandstone specimens are first pretreated with strong dielectric substances before being exposed to microwave radiation to increase their microwave absorption capacity, then they are exposed to microwave fields and finally conducted to uniaxial compression tests. Enhancement in microwave absorption capacity of sandstone specimens is showed by P-wave velocity, nuclear magnetic resonance, and mechanical tests before and after microwave treatment. The results showed that barium titanate suspension and water are both effective microwave-assisted absorbing agents. The specimens treated with barium titanate suspension exhibited better microwave absorption capacity; in 5 kW microwave power irradiation, its p-wave velocity falls by 14.04%, porosity rises by 25.43%, and uniaxial compressive strength falls by 24.98%. Additionally, the failure form of sandstone specimens changes from brittle to plastic once it has fully absorbed microwave energy.

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An Experimental Investigation into CO2 Laser-Based Processing of Boulder and Marble

Sinha

Joshi

2023

Low Cost Manufacturing Technologies

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Simulation and experimental research of laser scanning breaking granite

Cited by 16 publications

References 11 publications

Analysis of dynamic characteristics of an experimental bench of high-pressure water fracturing assisted cutting

Analysis of dynamic characteristics of an experimental bench of high-pressure water fracturing assisted cutting

Effect of strong dielectric substances on the damage characteristics of rocks exposed to microwave radiation: Insight from experiments and mechanisms

An Experimental Investigation into CO2 Laser-Based Processing of Boulder and Marble

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