표제지
목차
Abstract 9
I. 서론 11
II. 연구사 13
2.1. 화강암질 풍화토의 일반적인 특성 13
2.2. 사면안정 해석법의 종류 13
III. 재료 및 실험방법 17
3.1. 연구 대상지역의 지층개황 17
3.2. 시료 채취 19
3.3. 흙의 물리적 성질 실험방법 19
1) 자연함수비(KS F 2306) 20
2) 비중(KS F 2306) 21
3) 연경도 시험(KS F 2303) 22
4) 입도분석(KS F 2302. 2309) 23
3.4. 직접전단강도 시험방법(KS F 2343) 24
IV. 시험결과 및 분석 26
4.1. 물리적실험 결과 26
4.2. 직접전단강도시험 결과 27
1) 무촌리 시료의 실험결과 27
2) 월평리 시료의 실험결과 28
V. 사면안정성 검토 31
5.1. 사면안정 해석모델 31
5.2. 기준안전율 결정 32
5.3. 검토단면 및 대표 토질정수의 선정 33
1) 검토단면의 선정 33
2) 대표 토질정수 결정 41
5.4. 사면안정성 검토 결과 43
VI. 결론 53
참고문헌 56
부록 60
Table 1. The shape of failure surface in the limit equilibrium analysis methods 15
Table 2. Information of sites selected 17
Table 3. Stratum composition of the boring investigation point 18
Table 4. The physical properties of soil samples used 26
Table 5. Shear strength parameters (Muchon) 27
Table 6. Shear strength parameters (Walpyeong) 29
Table 7. Apply the minimum safety standards 32
Table 8. Design geotechnical parameters(Muchon) 41
Table 9. Design geotechnical parameters(Walpyeong) 42
Table 10. A cross-section analysis of the stability(Muchon) 45
Table 11. B cross-section analysis of the stability(Muchon) 46
Table 12. A cross-section analysis of the stability(Walpyeong) 49
Table 13. B cross-section analysis of the stability(Walpyeong) 51
Fig 1. Location of sites selected 17
Fig 2. The photography of soil sampling 19
Fig 3. Apparatus of Oven Dry 20
Fig 4. Apparatus of Specific gravity 21
Fig 5. Apparatus of Atterberg limit 23
Fig 6. Apparatus of direct shear test 24
Fig 7. Particle size distribution curve 26
Fig 8. Results of direct shear test(Muchon) 28
Fig 9. Direct shear test result (Walpyeong) 29
Fig 10. Selection of representative cross section of cut slope 33
Fig 11. Cross section selected for analyzing slope stability (Longitudinal cross-section) 34
Fig 12. A Section 35
Fig 13. B Section 36
Fig 14. Selection of representative cross section of cut slope 37
Fig 15. Cross section selected for analyzing slope stability (Longitudinal cross-section) 38
Fig 16. A section 39
Fig 17. B section 40
Fig 18. A cross-section analysis of the slope stability (Maximum shear strength) 45
Fig 19. A cross-section analysis of the stability (Residual shear strength) 46
Fig 20. B cross-section analysis of the slope stability (Maximum shear strength) 47
Fig 21. B cross-section analysis of the slope stability (Residual shear strength) 47
Fig 22. A cross-section analysis of the slope stability (Maximum shear strength) 50
Fig 23. A cross-section analysis of the slope stability (Residual shear strength) 50
Fig 24. B cross-section analysis of the slope stability (maximum shear strength) 51
Fig 25. B cross-section analysis of the slope stability (Residual shear strength) 52