103 
deve.1 oped to estab 1 i sh 
E- l.ar! be 
ediments 
of O „ S ; 9 
wt“4 have 
wetier 
wt >1 and 
very wet 
mat er i al 
too, 3. t 
not be 
This, is 
r3 es» io 
t O k n ow 
q sy steam 
t h e e>: c a v at i on o f sed i mien t s» 
Notwi thstandi ng these effects a procedure may bee 
an automatic alert system capable of warning the operator in charge 
sudden and uncontrolled moisture increase in the materials to 
excavated. Without more profond knowledge about soil condition 
forefield, structure based on suppositions and models this procedure 
only be* used for announcing dangerous situations. 
tion of 
are open 
emi E-E- i on 
r apid1y 
(mediurn 
stronger 
b3 noing 
me way. 
g water 
er mine a 
e>; eeded 
an 8 
in si dered 
not be 
a\d ' side 
cause of 
of 
be 
a n <1 
c an