데이터 기반 TBM 계획 및 시공 관리 시스템 적용 사례
Case study of data-based TBM planning and construction management system application
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초록
Tunnel Boring Machine (TBM)은 전면에 절삭 도구가 설치된 커터 헤드를 회전시키며 지반을 굴착하는 기계 장비로,TBM의 굴진 효율은 절삭 도구의 절삭 능력과 장비 운전(추진력, 커터 헤드 회전 등) 조작에 영향을 받는다. 일반적으로암반에서 사용하는 절삭 도구인 디스크 커터의 거동은 실험적 모델을 통해 예측하며, 대표적으로 Norwegian Universityof Science and Technology (NTNU)모델과 Colorado School of Mines (CSM)모델이 사용된다. 이 두 모델의 결과로부터 디스크 커터 소모량과 굴착 속도를 산정하고, 경험적 모델에 적용하여 공사 기간을 예측한다. 이후 시공 단계에서는계획에 따라 굴진이 운영되는데, TBM은 기계 장비이므로 추력, RPM 장비의 파워 등 다양한 요소를 고려하여 작업해야하며, 조작은 작업자의 경험과 숙련도에 크게 의존하는 경우가 많다. 이러한 과정에서 객관적인 데이터보다 주관적인 판단에 의해 결정되는 요소들이 발생하여, 신뢰성 있는 결과를 도출하지 못할 가능성이 있다. 따라서 본 연구에서는 기존NTNU, CSM 모델에 New Abrasion Test (NAT)모델, 공정 시뮬레이션, TBM Advanced Driving Assistance System(TADAS) 통합한 데이터 기반의 TBM 계획 및 관리 시스템을 고안하여 국내 터널 현장에 시범 적용하였으며, 그 결과를비교 분석하였다.
Abstract
Tunnel Boring Machine (TBM) is a mechanical device designed to excavate groundby rotating a cutter head equipped with cutting tools at the front. The excavation efficiencyof a TBM is affected by the cutting performance of these rotation. Typically, thebehavior of disk cutters, which are used as cutting tools in rock, is predicted usingexperimental models, with the Norwegian University of Science and Technology (NTNU) and Colorado School of Mines (CSM) models being the most commonly referenced. These models enable the calculation of disk cutter consumption and advancerates, which are then applied to empirical models for construction period planning. During the construction phase, excavation operations follow the plan; however, sinceTBM operation requires consideration of various factors such as thrust, RPM, andmachine power, it often relies heavily on the experience and skill level of the operator. This reliance on subjective judgment rather than objective data can sometimes lead toinconsistent results. Therefore, in this study, a TBM planning and management systemwas developed by integrating the New Abrasion Test (NAT) model, process simulation,and TBM Advanced Driving Assistance System (TADAS) into the existingNTNU and CSM models. This system was applied to a domestic tunnel constructionsite, and the outcomes were compared and analyzed.
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