The separation of reinforced cementitious composites with a stream-line cutting tool

Momber, Andreas W.; Budidharma, Edwin; Tjo, Riny

doi:10.1016/j.resconrec.2010.12.014

Cited by 8 publications

(2 citation statements)

References 8 publications

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“…Related to rock materials, useful applications of solid particle erosion involve cleaning and decontamination of natural stone walls and cutting and demolition work in the construction industry (Momber 2005;Momber and Kovacevic 1998;Momber et al 2011). Further applications of solid particle erosion to rocks and rock-like materials include drilling operations in mining and in the oil and gas industry.…”

Section: Introductionmentioning

confidence: 99%

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

Momber

2014

Rock Mech Rock Eng

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Effects of fracture toughness on the impingement of geomaterials (rocks and cementitious composites) by quartz particles at velocities between 40 and 140 m/s are investigated experimentally and analytically. If schist is excluded, relative erosion (in g/g) reduces according to a reverse power function if fracture toughness increases. The power exponent depends on impingement velocity, and it varies between -0.64 and -1.33. Lateral cracking erosion models, developed for brittle materials, deliver too high values for relative material erosion. This discrepancy is partly attributed to stress rate effects. Effects of R-curve behavior seem to be marginal. An integral approach E R = K 1 Á E R P ? (1 -K 1 ) Á E R L is introduced, which considers erosion due to plastic deformation and lateral cracking. A transition functionsuggested in order to classify geomaterials according to their response against solid particle impingement.

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Section: Introductionmentioning

confidence: 99%

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

Momber

2014

Rock Mech Rock Eng

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“…Lin et al (2011) used numerical simulation methods and found that the cutting depth of a highpressure abrasive jet cutter is up to 700-800 mm. Momber et al (2011) proposed a model for the cutting of reinforced concrete members using streamline cutting tools. Lu et al (2013) showed that the depth of a borehole drilled using a pulsating jet flushing technology can be 2.7 times deeper than using traditional flushing technology.…”

Section: Introductionmentioning

confidence: 99%

Permeability Enhancement Properties of High-Pressure Abrasive Water Jet Flushing and Its Application in a Soft Coal Seam

2021

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High-pressure abrasive water jet flushing (HPAWJF) is an effective method used to improve coal seam permeability. In this study, based on the theories of gas flow and coal deformation, a coupled gas-rock model is established to investigate realistic failure processes by introducing equations for the evolution of mesoscopic element damage along with coal mass deformation. Numerical simulation of the failure and pressure relief processes is carried out under different coal seam permeability and flushing length conditions. Distributions of the seepage and gas pressure fields of the realistic failure process are analyzed. The effects of flushing permeability enhancement in a soft coal seam on the gas drainage from boreholes are revealed by conducting a field experiment. Conclusions can be extracted that the gas pressure of the slotted soft coal seam is reduced and that the gas drainage volume is three times higher than that of a conventional borehole. Field tests demonstrate that the gas drainage effect of the soft coal seam is significantly improved and that tunneling speed is nearly doubled. The results obtained from this study can provide guidance to gas drainage in soft coal seams regarding the theory and practice application of the HPAWJF method.

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Erosion of Schist due to Solid Particle Impingement

Momber¹

2012

Rock Mech Rock Eng

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The separation of reinforced cementitious composites with a stream-line cutting tool

Cited by 8 publications

References 8 publications

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

Permeability Enhancement Properties of High-Pressure Abrasive Water Jet Flushing and Its Application in a Soft Coal Seam

Erosion of Schist due to Solid Particle Impingement

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