Page 89 - Water Standards

7.2 StructuralDesi g nofunder g roundPowerhouse

7.2.1 Geolo g icaldataandp arametersforthestabilit yanal y sis
andsu pp ortdesi g nofsurroundin grockofunder g roundp ower-
houseshallbedeterminedthrou g hcomp rehensiveanal y sisand
researchbasedong eolo g icalinvesti g ation, fieldandlaborator y
,
testresults , en g ineerin ganalo gy etc.
7.2.2 Thestabilit yanal y sismethodforsurroundin grocksofunder-
g roundp owerhouseincludestwocate g ories , namel y qalitativeanal-
,u
y sisandq uantitativeanal y sis.Theq ualitativeanal y sisincludesthe
methodsofg eolo g icanal y sisanden g ineerin ganalo gy.Theq uantita-
tiveanal y sisincludesthemethodsofnumericalanal y sis , blockstabili-
t yanal y sis ,modeltest ,monitorin gandmeasurement , andfeedback
anal y sis.Theusablemethodma ybeselectedaccordin gtothedesi g n
sta g e , cavernscale, surroundin grockt yp e, rockmasscharacter-
istics , etc.
7.2.3 Thestabilit yofsurroundin grocksofcavernsshallbee-
,
valuatedwithg eolo g icalanal y sisanden g ineerin ganalo gy in
considerationofnumericalanal y sis , accordin gtothefactorssuch
asg eolo g icalstructureofrockmass ,mechanicalp ro p ert yofrock
mass , classificationofsurroundin grocks ,ma g nitudesanddirec-
tionsofinsitustresses , imp actofg roundwater , la y outandcon-
structionofcaverns , etc.
7.2.4 Thesu pp ortdesi g nforsurroundin grocksofunder g round
,
p owerhousecavernsshallbebasedonen g ineerin ganalo gy incon-
j unctionwithnumericalanal y sis , andshallberefinedg raduall yac-
cordin gtothemonitorin gresultsofsurroundin grocksdurin gcon-
struction.
7.2.5 Inthedesi g nofinte g ralstabilit yandsu pp ortofunder-
g roundp owerhousecaverns , thefiniteelementmethodma ybe

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