통계 관리도기법을 이용한 터널 변위수렴 및 장기거동 분석시스템 개발 = Development of Tunnel Displacement Analysis System with Statistical Control Chart Method

다국어 초록 (Multilingual Abstract)

During the excavation, the tunnel measurement provides important information for the ground stability evaluation. The tunnel stability evaluation uses tunnel measurements of the displacement and displacement rates before the stabilization. Precise prediction of the stabilization time would reduce the time of constructional processes conducted after the stabilization and hence eventually save the constructional cost. However, the point of displacement convergence has been estimated, without any certain standard, by engineering judgement of the tunnel geologist differently site to site. This study, therefore, has developed a tunnel displacement analysis system in aid of a statistical control chart method for quantitative judgements of displacement stabilization point and analysis the behavioral characteristics of subtle displacement after convergence. MR and CUMSUM control charts were used to judge the point of convergence and to analysis a long-term displacement, respectively.
In order to identify the applicability of the displacement analysis system developed through this study, displacement data from constructing tunnels were used, and the result showed that the displacement analysis method with MR control chart is able to judge the point of tunnel displacement conversion earlier than ordinary displacement analysis methods. The displacement analysis system with CUSUM control chart makes it possible to identify any possible changes in a long-term displacement pattern after convergence and zones of abnormal displacement.

목차 (Table of Contents)

• Ⅰ. 서 론 1
• Ⅱ. 현장 암반 평가 4
• 1. 연구지역 개요 4
• 2. 대상터널 암반평가 6
• Ⅲ. 통계 관리도 이론 11
• 1. 관리도 개요 11
• 2. 이동범위(MR) 관리도 15
• 3. 누적합(CUSUM) 관리도 17
• 4. 기타 관리도 19
• Ⅳ. 관리도 작성 방법 및 판정 21
• 1. 이동범위(MR) 관리도의 설계 및 판정 21
• 2. 누적합(CUSUM) 관리도의 설계 및 판정 24
• Ⅴ. 계측변위 분석 시스템 개발 28
• 1. 개발 목적 28
• 2. 설계 28
• (1) 설계과정 28
• (2) 계측변위 분석 시스템 설계안 30
• 3. 계측변위 분석 시스템의 코딩 34
• (1) 적용언어 및 이론 34
• (2) 계측변위 분석 시스템의 주요기능 35
• Ⅵ. 현장 계측데이터의 적용 42
• 1. OO터널의 이동범위(MR) 관리도 작성 42
• 2. OO터널의 누적합(CUSUM) 관리도 작성 47
• Ⅶ. 결과 분석 51
• 1. 변위수렴 분석 51
• 2. 암종별 변위수렴 거리 비교 56
• 3. 장기거동 분석 62
• Ⅳ. 결 론 64
• 참고문헌 66