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An experimental study on screw conveyor system of EPB shield TBM

EPB Shield TBM의 스크루 컨베이어 시스템에 관한 실험적 연구

  • Received : 2011.11.16
  • Accepted : 2011.12.01
  • Published : 2011.11.30

Abstract

The screw conveyor system installed in EPB Shield TBM chamber was manufactured in small scale for pilot test to investigate the tunnel muck hauling system that could control the earth pressure and support face thrust force. In this experimental study, there were three different test conditions that include screw angles, screw pitch, and screw RPM. Through analysis on test results based on the muck hauling amount per unit time from screw conveyor, the optimum conditions of screw conveyor were proposed to be efficiently performed by the muck processing system. Finally, this study provided the meaningful results such as optimum screw angle, screw RPM, and screw pitch for anti-reverse flow of muck hauling.

본 논문에서는 EPB Shield TBM장비에서 사용되는 체임버 내의 토압을 제어하고 막장의 안전을 유지하는 버력처리시스템인 스크루 컨베이어를 축소 제작하여 실내모형 실험을 실시하였다. 본 실내모형 실험에서 고려한 실험조건은 스크루 각도, 스크루 피치간격 및 스크루 회전수 등이며, 조건별 시험결과인 단위시간당 버력량을 비교 분석 하여 버력처리시스템이 최적의 성능을 발휘 할 수 있는 조건을 제시하였다. 최종적으로, 본 실험결과로부터 버력이 역류하지 않는 최적의 스크루 각도, 스크루 회전수 그리고 스크루 간격 조건을 도출할 수 있었다.

Keywords

Acknowledgement

Grant : 토사지반 커터헤드 설계요소 핵심기술 개발

Supported by : 한국건설교통기술평가원

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