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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.21 No.1

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DEM-based numerical study on discharge behavior of EPB-TBM screw conveyor for rock

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2019, v.21 no.1, pp.127-136
https://doi.org/10.9711/KTAJ.2019.21.1.127



& (2019). DEM-based numerical study on discharge behavior of EPB-TBM screw conveyor for rock. (사)한국터널지하공간학회, 21(1), 127-136, https://doi.org/10.9711/KTAJ.2019.21.1.127

Abstract

Tunnel construction by TBMs should be supported by the performance of a screw conveyor in order to obtain the optimum penetration rate, so studies related to the screw conveyor performance have been being conducted. Compared to the study on the performance of the screw conveyor for the soil, however, the research on the performance of the screw conveyor for the rock is insufficient. Considering the domestic tunnel sites with more rock layers than soil layers, simulation of discharge of 6 types of rock chips by the screw conveyor was conducted using DEM. Regardless of the shape and volume of the rock chips, the discharge rates of the rock chips by the parallel placed screw conveyor at a speed of 10 RPM in the same rock mass were about 20% (standard deviation: 1.3%) of the maximum volume of discharge rate by the screw conveyor. It is expected that this study can be used as a reference material for screw conveyor design and operation in TBM excavations in rock masses.

keywords
TBM, Screw conveyor, Rock chip, Discharge, TBM, 스크류컨베이어, 암반칩, 배토

Reference

1.

1. Bruland, A. (2000), “Hard rock tunnel boring, the boring process. Vol. 7 of 10”, Doctoral Thesis, Norwegian University of Science and Technology, pp. 81.

2.

2. Farrokh, E., Rostami, J. (2008), “Correlation of tunnel convergence with TBM operational parameters and chip size in the Ghomroud tunnel, Iran”, Tunnelling and Underground Space Technology, Vol. 23, No. 6, pp. 700-710.

3.

3. Jung, H.S., Choi, J.M., Chun, B.S., Park, J.S., Lee, Y.J. (2011), “Causes of reduction in shield TBM performance - A case study in Seoul”, Tunnelling and Underground Space Technology, Vol. 26, No. 3, pp. 453-461.

4.

4. Kim, K.J., Koh, S.Y., Choo, S.Y., Kim, J.S. (2006), “Theoretical and numerical study on the support pressure for tunnel face stability in shield TBM construction”, Journal of Korean Tunnelling and Underground Space Association, Vol. 8, No. 3, pp. 197-204.

5.

5. Kim, S.H., Kim, J.D., Park, I.J. (2011), “An experimental study on screw conveyor system of EPB shield TBM”, Journal of Korean Tunnelling and Underground Space Association, Vol. 13, No. 6, pp. 519-530.

6.

6. Merritt, A.S., Mair, R.J. (2006), “Mechanics of tunnelling machine screw conveyors: model tests”, Geotechnique, Vol. 56, No. 9, pp. 605-615.

7.

7. Oh, T.S., Kim, S.H., Kim, W.K., Lee, H.Y., Shin, M.H. (2014), “Model test on operation efficiency in the screw conveyor of shiled TBM in soft ground”, Journal of Korean Tunnelling and Underground Space Association, Vol. 16, No. 2, pp. 203-211.

8.

8. Peila, D., Oggeri, C., Vinai, R. (2007), “Screw conveyor device for laboratory tests on conditioned soil for EPB tunneling operations”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 133, No. 12, pp. 1622-1625.

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