ABSTRACT
The p r e v i o u s c h a p t e r was c o n c e r n e d w i t h s l o p e f a i l u r e
r e s u l t i n g f r o m s l i d i n g on a s i n g l e p l a n a r s u r f a c e d i p p i n g
i n t o t h e e x c a v a t i o n and s t r i k i n g p a r a l l e l o r n e a r l y p a r a l l e l
t o t h e s l o p e f a c e . I t was s t a t e d t h a t t h e p l a n e f a i l u r e
a n a l y s i s i s v a l i d p r o v i d e d t h a t t h e s t r i k e o f t h e f a i l u r e
p l a n e i s w i t h i n + 2 0 ° o f t h e s t r i k e o f t h e s l o p e f a c e . T h i s
c h a p t e r i s c o n c e r n e d w i t h t h e f a i l u r e o f s l o p e s i n w h i c h
s t r u c t u r a l f e a t u r e s upon w h i c h s l i d i n g c a n o c c u r s t r i k e
a c r o s s t h e s l o p e c r e s t and w h e r e s l i d i n g t a k e s p l a c e a l o n g
t h e l i n e o f i n t e r s e c t i o n o f t w o s u c h p l a n e s .
