A experimental study on the loads and temperature acting on the shaft of a disc cutter during linear rock cutting test

Soon-Wook Choi; Soo-Ho* Chang; Young-Taek Park; Gyu-Phil Lee; Gyu-Jin Bae

doi:10.9711/KTAJ.2013.15.3.237

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A experimental study on the loads and temperature acting on the shaft of a disc cutter during linear rock cutting test 선형절삭실험 중 디스크커터 축에 작용하는 하중과 온도에 대한 실험적 연구

31 May 2013. pp. 237-251

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Abstract

This study aimed to estimate the axial stress and torque on a shaft in a disc cutter. The corresponding inner temperature and the surface temperature of a cutter ring were also measured by using strain gauges and thermocouples during the linear cutting tests. The maximum values of the axial stress and torque were recorded to 11.3 MPa, 171 kN․ m respectively. They have higher correlations with normal force rather than rolling force. The results of temperature measured by thermocouples during a linear cutting test showed that the rate of increase in temperature was below 0.2℃. When the cutter spacing is set to be 70 mm, the inner temperature and surface temperature of a disc cutter were 0.1℃/m, 0.15~0.17℃/m respectively. Similarly, when the cutter spacing is 90 mm, the temperature values were 0.09℃/m, 0.13~0.23℃/m respectively.

Keywords

Disc cutter

Cutter force

Axial stress

Torque

Temperature

본 연구는 변형률게이지와 열전대, 적외선 열화상카메라를 사용하여 선형절삭실험 동안 디스크커터의 축에 발생하는 축응력과 토크를 측정하고 디스크커터의 내부와 외부의 온도를 파악하고자 하였다. 실험결과, 축응력과 토크의 최대값은 각각 11.3 MPa, 171 kN·m로 측정되었으며, 축응력과 토크는 회전력보다는 디스크커터의 연직력과 상관성이 높은 것으로 나타났다. 선형절삭실험 동안 열전대로 측정한 결과, 디스크커터의 온도변화는 0.2°C 이내로 나타났다. 그러나 수행된 각 선형절삭작업이 연속적으로 이루어진다고 가정한 다음, 디스크커터의 내부온도와 커터 링 표면의 온도변화를 추정한 결과, 커터간격이 70 mm인 경우에는 각각 0.1°C/m, 0.15~0.17°C/m로 예상되었고 커터간격이 90 mm인 경우에는 각각 0.09°C/m, 0.13~0.23°C/m로 추정되었다.

키워드

디스크커터

커터작용력

축응력

토크

온도

References

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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 : 15
No :3
Pages :237-251
Received Date : 2013-04-16
Revised Date : 2013-05-02
Accepted Date : 2013-05-08
DOI :https://doi.org/10.9711/KTAJ.2013.15.3.237

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

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