: 2005.03.15 6.1 (mass wasting) 1 (Fall) 2 (Topple) 3 (Slide) 4 (Spread) 5 (Flow) 1~7 Varnes(1978 6.1 (Varnes1978) (Type of material) (Engineering soils) (Bedrock) (Coarse) (Fine) (Fall) (Topple) (Slide) (Spread) (Flow) Fall 6-1
6.1 (Turner and Schuster, 1996) Topple 6.2 (Turner and Schuster, 1996) Slide (6.3) 6-2
6.4 6.2 6.3 (Turner and Schuster, 1996) 6.4 (Turner and Schuster, 1996) 6.2 6-3
Spread ( ) 6.4 (Turner and Schuster, 1996) Flow (1) (2) (3) (4) 6.5 (Turner and Schuster, 1996) Cruden Varnes(1992) 6 5 / 10 6.3 6-4
6.3 (Turner and Schuster, 1996) (mm/sec) 7 5 10 3 6 5 5 10 1 5 10-1 4 3 2 1 5 10-3 5 10-5 5 10-7 6.2 1. 2. 3. 4. 1. (Geological causes)tuner and Schuster, 1996 (1) (2) (3) (4) (5) (6) (7) (8) (9) 2. (Morphological causes)tuner and Schuster, 1996 (1) (2) 6-5
(3) (4) (5) (6) (7) (8) (9) 3. (Physical causes)tuner and Schuster, 1996 (1) (2) (3) (4) ( ) (5) (6) (7) (8) (9) 4. (Human causes)tuner and Schuster, 1996 (1) (2) (3) (4) (5) (6) (7) (8) 6.3 6.3.1 6-6
1. 2. 3. 4. 5. 1. 2. 3. 4. 11.5 5. 6. 6.3.3 6.3.4 6.4 6.4 2003 ; 6-7
( )... 6.5 6.5 ( ) (m) 0~1.5 14 14 14 1.5~3.0 14 13 12 3.0~4.5 13 11.5 11.25 4.5~6.0 12 12 11.5 6.0 12 11.5 11.5 12 6.6 6.6 11.25~11.5 11.25~10.5 ~10.25 11.25~11.5 11 11 1. 2. 3. 4. 5. 6-8
6.3.2 1. 2. GEO Geotechnical Manual for Slope TRH(1987) ( GEO Geotechnical Manual for Slope (1998)) 1.5 1.25 6.7 6.7 Technical Recommendations for Highways, 1987 F.S. 1.50 1.25 6.8 6.8 FS1.5 FS1.1 FS1.2 FS1.2 ( ) FS1.0 * Factor of SafetyFS * (GEO,1998) 6-9
1. 6.9 2. 6.10 6.9 GEO (10 ) (Geotechnical Manual for Slope1998) >1.1 1.2 1.4 1.2 1.2 1.4 1.4 1.4 1.4 1 10 1.1 2 6.10 GEO 10 >1.0 1.1 1.2 1 2 1.0 3 6.7 6.3.3 6-10
6-11 6.11 6.11 1. c φ ( ) 2. c φ S u 6.3.5 Critical Slip Surface Slices
1. ( ) Culmann Culmann Ns 2. Taylor Taylor c- φ 3. Ordinary MethodBishop Spencer Janbu Janbu Morgenstern-Price 6-12
6.11 ( GEO Geotechnical Manual for Slope (1998)) Lambe Whitman 1969 2~3 Lambe Whitman 1969 Bishop Bishop Morgenstern Hoek's Janbu Morgenstern Price Sarma Bishop1955 (F.S. 8% ) Bishop ru Hoek 27 o Bishop Morgenstern1960 10o~90o HoekBray1981 Janbu 1972 HoekBray F.S. 1981 Janbu MorgensternPrice Janbu 1965 Morgenstern & Price Sarma1979 Morgenstern & Price 6-13
6.3.4 1. 2. 3. 6.6 6-14
6.6 2003 1. 6.7 6.7 Hoek and Bray1981 2. 6-15
6-16 6.8 6.8 Hoek and Bray, 1981 3. 4. ( ) 5. 6. (Back Analysis) 1.0
1. C φ C φ r r 2. 3. 4. 2 3 r r 6.3.5 FLAC( )UDEC( )PLAXIS( )ABAQUS( Finite Element Method, FEM Finite Difference Method, FDM 6-17
6-18 FLAC FLAC 6.4 6.4.1 1. 2. 3. 1. 2. 1. 2. 3. 4. 5. 6. 7.
6-19 8. 9. 10. 6.4.2 1. 2. 3. 4. 1. ( ) 2. 3. 1 2 ( 4.
6-20 1 2 3 4 1. 2. 5( ) 3. 4. 5. 6.4.3 1.
2. 1. 1 2 2. 6.9 6.10 6.11 6.9 (Turner and Schuster, 1996) 6-21
6.10 (Turner and Schuster, 1996) 6.11 (Turner and Schuster, 1996) 3. 1 2 A B 3 A B C D E F G 6-22
6-23 H 4 5 1.5 1.2 2.0 1.5 3.0 2.0 2003 4. / 1 / / 2 5. 6. 1 ( ) 2 ( )120 1. 1.1 1.5 2. 1 2 3. 4.
6-24 ( )121 6.5 6.5.1 1. 2. 3. 4. 5. 6. 1. 2. 1 2 ( ) 3 ( ) 3. 6.12
6.12 (Turner and Schuster, 1996) 4. ( ) 6.12 6.12 6.9 5. 6. 6.5.2 1. 1 2 ( ) 3 4 5 6 2. 6-25
6-26 1 2 3 1. 2. 6.13 3. : 1 2 3 6.14 4. 5. 45 6. 7.
1 2 3 8. 1 2 3 4 5 6 6.13 (Turner and Schuster, 1996) 6-27
1 2 3 4 5 6.14 (Turner and Schuster, 1996) 1. 2. ( ) 3. (benched rock slope) 4. 1 2 3 4 5 6-28
6.5.3 1. 2. 3. 4. 5. 1. 6.15 75 55 75 40 55 2. 3. 4. 5. 6-29
6.15 (Turner and Schuster, 1996) 6.6 1. 2. 3. 4. 5. 6. 7. 6-30
6-31 8. 9. 10. Geotechnical Mannal for Sloes, GEO1997 1. 2. 3. (QC) (QA) 1 ( ) 2 4.
6-32 5. 6. 7. 8. 9. 10.
6-33