Development of roadheader performance prediction model and review of machine specification

Jae Hoon Jung; Ju Hyi Yim; Jae Won Lee; Han Byul Kang; Do Hoon Kim; Young Jin Shin

doi:10.9711/KTAJ.2023.25.3.221

All Issue

2023 Vol.25, Issue 3 Preview Page Next Page

Research Paper

Development of roadheader performance prediction model and review of machine specification 로드헤더 장비사양 검토 및 굴착효율 예측 모델 개발

31 May 2023. pp. 221-243

PDF XML

Abstract

The use of roadheaders has been increasing to mitigate the problems of noise and vibration during tunneling operations in urban area. Since lack of experience of roadheader for hard rock, the selection of appropriate machines and the evaluation of cutting rates have been challenging. Currently, empirical models developed overseas are commonly used to evaluate cutting rates, but their effectiveness has not been verified for domestic rocks. In this paper, a comprehensive literature review was conducted to assess the rock cutting force, cutterhead capacity, and cutting rate to select the appropriate machine and evaluate its performance. The cutterhead capacity was reviewed based on the literature results for the site. Furthermore, a new empirical model and simplified method for predicting cutting rates were proposed through data analysis in relation to operation time and rock strength, and compared with those of the conventional model from the manufacturer. The results show good agreement for high strength range upper 80 MPa of uniaxial compressive strength.

Keywords

Roadheader

Cutterhead capacity

Net cutting rate

Empirical model

Simplified method

국내 도심지 터널 공사에서 발파로 인한 진동 및 소음 방지를 위한 대안으로 로드헤더 공법 적용사례가 늘고 있다. 그러나 국내의 암반 대상 로드헤더 적용사례가 극히 적어 로드헤더 장비선정과 굴착효율 평가에 한계가 있다. 특히 로드헤더 굴착효율 평가를 위해 현재는 해외 현장에서 경험적으로 개발된 모델식을 적용하고 있으나 국내 암종 및 지질조건에 대한 검증이 부족한 실정이다. 본 연구에서는 해외 문헌 연구를 통하여 로드헤더 장비사양 결정방법과 굴착효율 평가 모델을 조사하였다. 이를 바탕으로 국내 현장 대상 장비선정을 위한 사양 검토와 더불어 현장 대상 암석강도와 굴착효율의 상관모델식을 제안하고 설계 굴착효율 예측 모델과 비교하였다. 또한 로드헤더 절삭이론 모델식을 이용한 굴착효율 산정의 간편법을 제안함으로써 굴착효율을 평가하고 기존 경험적 예측 모델과 비교 검증하였다.

키워드

로드헤더

커터헤드사양

굴착효율

경험적모델

간편식 모델

References

Balci, C., Demircin, M.A., Copur, H., Tuncdemir, H. (2004), "Estimation of optimum specific energy based on rock properties for assessment of road-header performance", Journal of the South African Institute of Mining and Metallurgy, Vol. 104, No. 11, pp. 633-641.

Bilgin, N., Copur, H., Balci, C. (2014), Mechanical Excavation in Mining and Civil Industries, CRC Press, Boca Raton, Florida, pp. 133. 10.1201/b16083

Bilgin, N., Demircin, M.A., Copur, H., Balci, C., Tuncdemir, H., Akci, N. (2006), "Dominant rock properties affecting the performance of conical picks and the comparison of some experimental and theoretical results", International Journal of Rock Mechanics and Mining Science, Vol. 43, No. 1, pp. 139-156. 10.1016/j.ijrmms.2005.04.009

Bilgin, N., Seyrek, T., Shahriar, K. (1988), "Roadheader performance in Istanbul Golden Horn clean up contributes valuable data", Tunnels and Tunnelling, Vol. 20, No. 6, pp. 41-44.

Cho, M.G., Cho, J.W., Kim, M.G., Jung, J.H., Choi, S.H. (2023), "Operating process of transverse type roadheader for tunnel excavation in Korea", Tunnel and Underground Space, Vol. 33, No. 1, pp. 1-9. 10.7474/TUS.2023.33.1.001

Choi, S.W., Kang, T.H., Chang, S.H., Lee, C.H., Lee, G.P., Kim, C.Y. (2016), "Performance estimation depending on the insert size of conical picks by linear cutting test", Journal of Korean Tunnelling and Underground Space Association, Vol. 18, No. 2, pp. 221-233. 10.9711/KTAJ.2016.18.2.221

Copur, H., Ozdemir, L., Rostami, J. (1998), "Roadheader applications in mining and tunneling", Mining Engineering, Vol. 50, pp. 38-42.

Ebrahimabadi, A., Goshtasbi, K., Shahriar, K., Cheraghi Seifabad, M. (2011), "A model to predict the performance of roadheaders based on the rock mass brittleness index", Journal of the Southern African Institute of Mining and Metallurgy, Vol. 111, No. 5, pp. 355-364.

Evans, I. (1984), "A theory of the cutting force for point-attack picks", International Journal of Mining Engineering, Vol. 2, No. 1, pp. 63-71. 10.1007/BF00880858

Gehring, K.H. (1989), "Roadheaders: a cutting comparison", Tunnels and Tunnelling, Vol. 21, No. 11, pp. 27-30.

Ghasemi, E. (2017), "Development of a site-specific regression model for assessment of road-header cutting performance of Tabas coal mine based on rock properties", Journal of Mining and Environment, Vol. 8, No. 4, pp. 663-672. 10.22044/jme.2017.955

Goktan, R.M. (1990), "Effect of cutter pick rake angle on the failure pattern of high-strength rocks", Mining Science and Technology, Vol. 11, No. 3, pp. 281-285. 10.1016/0167-9031(90)90981-W

Hekimoglu, O.Z. (1991), "Comparison of longitudinal and transverse cutting heads on a dynamic and kinematic basis", Mining Science and Technology, Vol. 13, No. 3, pp. 243-255. 10.1016/0167-9031(91)90368-M

Kim, Y.G., Jeong, H.Y., Cho, J.W., Park, S.W., Lee, Y.J., Jang, J.S., Choi, S.H. (2021), Roadheader Excavation Guide in Urban, KSRM, Seoul, pp. 9, 130.

Neil, D.M., Rostami, J., Ozdemir, L., Gertsch, R. (1994), "Production estimating techniques for underground mining using roadheaders", Proceedings of the SME/AIME Annual Meeting, Albuquerque, New Mexico.

Restner, U., Plinninger, R.J. (2015), "Rock mechanical aspects of roadheader excavation", Proceedings of the Conference EUROCK 2015 & 64th Geomechanics Colloquium, Salzburg, Austria.

Roxborough, F.F., Liu, Z.C. (1995), "Theoretical considerations on pick shape in rock and coal cutting", Conference: 6. Underground Operators' Conference, Kalgoorlie, Australia, pp. 189-193.

Sandvik (2016), Tunneling short course.

Sandvik (2022), SANDVIK tunneling roadheader technical description.

Thuro, K., Plinninger, R.J. (1999), "Roadheader excavation performance-geological and geotechnical influences", Proceedings of the 9th ISRM Congress, Theme 3: Rock Dynamics and Tectonophysics/Rock Cutting and Drilling, Paris, France, pp. 1241-1244.

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 25
No :3
Pages :221-243
Received Date : 2023-04-27
Revised Date : 2023-05-10
Accepted Date : 2023-05-10
DOI :https://doi.org/10.9711/KTAJ.2023.25.3.221

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

All Issue