Title: ??????(mass wasting)
1? 8? ??????
- 1. ???? ??? ??
- ??????(mass wasting)
- ??? ??? ??? ??? ???? ?? ??? ???? ??
- ?? ?? ?? - ???
- ?? ?? ?? - ???, ??
- ???? ?? ???? ???? ?? ????? ???
- ??? ??? ???(angle of repose)
2- 2. ??? ??
- ?????? ??? ??
- ? ? ??
- m ??? ??
- ??? ????
- ??? ????
-
- ???? ? ? ? ,
- - ???? ??? ? ???? ? ???? gt ??????
- ???
- - ???? 1?? ?? ???? ????? 1.5 ??? ? ??.
3 ??? ???? ?? ??? ??? ?? ?????
??? ??? ????? - ????? 30-37?
?? - ??? ??, ??? ?? ???
4- 3. ?? ??
- ???? ???? ??
- ???? ?? ?? ?? ??(porepressure)
- ????? ??? ????? ???
- ????? ???? ???? ??? ??? ????
5- 4. ?????? ??
- a) ???? (Slope Failure)
- ????? ????? ????
- - ??????? ??
- ????,
- ???????,
- ???????
-
- b) ????(Sediment Flow)
- ??? ??? ?? ??
- - ??????? ??
- 1) ????
- ???? ?? ??? ??? ??
- 2) ??? ????? ????
-
6- A) ?????? (Slope Failure)
- ????
- - ?? ??? ?? ?? ??(????? ?? ?? ??? ??)
- ?? ????? ???? ????? ???? ??? ????
- - ?????? ?????? ??
- - ??? ??? ??? mechanism
?? 9.3
?? 9.4
7- ???? (Slope Failure)
- ?? ?????
- ????? ??? ??? ??
- ??? ???? ???? ??
- ?? ?????
- ??, ?, ??? ??? ????? ??
-
?? 9.3
8- B) ????
- - ???? ??? ?? ????? ??????
- ???? gravitational flow as a mixture
of water and sediments - ???? gravitational flow as grains
- - ????? ?? ?? ??
?? 9.8. ???? ??? ??? ?? ????? ??
9????(Slurry flow) - ???(solifuction) -
?? ??? ??? ??? ?? ??? ???? ???? ?? -
30cm/year ??? ?? - ?? ??? ?? ? ?????
?????? ??
?? 9.9
10 ????(Slurry flow) - ???(debris flow)
- ???? ? ??? ?? ?? - 1m/year ? ??
- ??? ??? ???? ? ??? ???? ???
?? 9.9
11- ????(Slurry flow) - ??(mudflow)
-
- - ?? ??? ?? ??, ?? ??? ??? ??
- - 1km/h ??? ??
- - ?? ??? ?? ??
- ?) ????? Nevada Del Ruiz ??
?? 9.9
12Nevada del Ruiz ??? ??
1985? 11? 26? ??? Nevada del Ruiz(5,400m) ?? ??
13- ???(Granular flow) ??(Creep)
- - ??? ??? ??? ?? ??? ???? ??
- - ???, ?? ?? ??? ??? ?? ??? ??? ?? ??
- - ? mm/year ?? mm/year? ??
-
14- ???(Granular flow) ??(Earth flow)
- - 1m/day ?? m/h? ??
- - ??? ??? ??? ????? ??
- - ???? ????? ??? ???? ? ??? ??
- - ?? ???? ?? ??
?? 9.9
?? ??? ?? ????? ??? ??(2002?)- ??
15???
- 1. ??? ??
- ??? ???? ????, ?? ?? ???? ???? ?? ??? ????
?? - a wide range of ground movement, such as
rock falls, deep failure of slopes, and shallow
debris flows. Gravity acting on an over steepened
slope is the primary reason for a landslide. - ??? ?? - ????? ?? ????
-
162) ??? ????
????? ??? ????(Keefer, 1984)
Landslide scar, City Creek Canyon 1998.
17??? ????
-
- b. ????? ??
- 1) ??? ??? ??, ??, ?? ?? ???
- ?(toe)??? ????? ?? -????
- 2) ??, ???? ? ????? ??? ?? ??? ??
- 3) ??? ?? ????
?? 9.27
?? 9.26
18??? ????
- c. ???? potential ??
- ?? ??
- ????(pore pressure)? ??
- ?? ???? ?? ??????
- ????? ??
- ??, ??, ??? ??? ????
- ???? ??
19??? ????
- d) ?? ??? ?? ?? ??
- ?) ?? ??? ?? ????? ??? ??
- e) ????
- ???? ?????? ??? ?? ??
- ?) ????? Nevada Del Ruiz ??