Study on Wear Prediction of Shield Disc Cutter in Hard Rock and Its Application

A high-pressure water jet can break rock efficiently, which is of great potential to overcome the problems of a tunnel boring machine (TBM) in full-face hard rock tunnel digging, such as low digging efficiency and high disc cutter wear rate. Therefore, this paper presented a new tunneling method that is a TBM coupled with a high-pressure water jet. The rock failure mechanism under the coupled forces of a disc cutter and water jet was analyzed at first. Then, the finite element method (FEM) and smoothed particle hydrodynamics (SPH) method were used to establish a numerical model of rock broken by the disc cutter and water jet. Effects of parameters on rock breaking performance were studied based on the numerical model. Moreover, an experiment of the water jet cutting marble was carried out to verify the reliability of the numerical simulation. Results showed that the high-pressure water jet can increase the TBM digging efficiency and decrease the forces and wear rate of the disc cutter. The optimum nozzle diameter is 1.5 mm, while the optimum jet velocity is 224.5 m/s in this simulation. The results can provide theoretical guidance and data support for designing the most efficient system of a TBM with a water jet for digging a full-face hard rock tunnel.

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The Derivation and Validation of TBM Disc Cutter Wear Prediction Model

Geotechnical and Geological Engineering ◽

10.1007/s10706-018-0540-9 ◽

2018 ◽

Vol 36 (6) ◽

pp. 3391-3398 ◽

Cited By ~ 1

Author(s):

Yandong Yang ◽

Kairong Hong ◽

Zhenchuan Sun ◽

Kui Chen ◽

Fengyuan Li ◽

...

Keyword(s):

Prediction Model ◽

Disc Cutter ◽

Wear Prediction ◽

Cutter Wear ◽

Disc Cutter Wear

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TBM performance and disc cutter wear prediction based on ten years experience of TBM tunnelling in Iran

Geomechanics and Tunnelling ◽

10.1002/geot.201500005 ◽

2015 ◽

Vol 8 (3) ◽

pp. 239-247 ◽

Cited By ~ 20

Author(s):

Jafar Hassanpour ◽

Jamal Rostami ◽

Jian Zhao ◽

Sadegh Tarigh Azali

Keyword(s):

Disc Cutter ◽

Wear Prediction ◽

Tbm Performance ◽

Cutter Wear ◽

Disc Cutter Wear

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The energy method to predict disc cutter wear extent for hard rock TBMs

Tunnelling and Underground Space Technology ◽

10.1016/j.tust.2011.11.001 ◽

2012 ◽

Vol 28 ◽

pp. 183-191 ◽

Cited By ~ 46

Author(s):

Lihui Wang ◽

Yilan Kang ◽

Zongxi Cai ◽

Qian Zhang ◽

Yu Zhao ◽

...

Keyword(s):

Energy Method ◽

Hard Rock ◽

Disc Cutter ◽

Cutter Wear ◽

Disc Cutter Wear

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Investigation of H13 Alloy Cutter Behaviour for Hard Rock Tunneling Applications

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.754-755.849 ◽

2015 ◽

Vol 754-755 ◽

pp. 849-853

Author(s):

Hieu Hoang ◽

Rune Østhus ◽

Hans Lange ◽

Eivind Grøv ◽

Steve Smading

Keyword(s):

Hard Rock ◽

Tensile Tests ◽

Disc Cutter ◽

High Wear Resistance ◽

Stress Effect ◽

Chromium Alloy ◽

Degradation Mechanisms ◽

Brittle Behavior ◽

Hardness Tests ◽

Residual Stress Effect

The current paper first analyzed the degradation mechanisms of the worn disc cutter made of forged H13 chromium alloy for hard rock tunneling applications. The paper investigated subsequently the mechanical properties of H13 to have a better understanding of the degradation mechanisms. Hardness tests were carried out on different positions on a cutter. Tensile tests and fracture toughness were carried out to investigate temperature effects. The test results showed that the material has a high wear resistance and a good temperature resistance, but its quasi brittle behavior and the residual stress effect (due to the cutting process) is critical for the chipping damage of the disc cutter.

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