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BAB I
PENDAHULUAN
A. JUDUL SKRIPSI
ANALISIS BIDANG KETIDAKMENERUSAN UNTUK
MENGANTISIPASI TERJADINYA KELONGSORAN BAJI PADA
LUBANG BUKAAN TAMBANG BAWAH TANAH DI D.O.Z PT.
FREEPORT INDONESIA COMPANY
B. ALASAN PEMILIHAN JUDUL
Massa batuan b!b"a "n#an $ban%a$an &at!'a( t$n'$. Massa batuan
b!s')at an's*t!*+ "an t'"a$ &n!us ,"'s$*nt'nu-. Ha(/a( %an# &&buat &assa
batuan an's*t!*+ a"a(a/ $a!na t!"a+atn%a b'"an#b'"an# $t'"a$&n!usan
,+(an *) "'s0*nt'nu't's- "a(a& &assa batuan.
B'"an#b'"an# "'s$*nt'nu a$an &n%bab$an "'st!'bus' t#an#an "a(a&
&assa batuan t'"a$ "'t!us$an1t!"'st!'bus' s0a!a &!ata $ s#a(a a!a/2 "an
s0a!a $s(u!u/an s')ats')at (ast's batuan b!uba/.
Pn##a('an untu$ +&buatan t!*3*n#an &n#a$'bat$an $s'&ban#an
&assa batuan t!#an##u2 s/'n##a batuan "'s$'ta! +n##a('an t!sbut a$an
!untu/ a+ab'(a batuan 'tu t'"a$ &a&+u &n%an##a bbann%a sn"'!'. K!untu/an
t!*3*n#an 'n' b'sa "'a$'bat$an $a!na a"an%a b'"an#b'"an# "'s$*nt'nu'tas %an#
a"a "' s$'ta! t!*3*n#an2 sbab +a"a "asa!n%a b'"an#b'"an# "'s$*nt'nu'tas
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a"a(a/ b'"an#b'"an# (&a/. K!untu/an %an# t!4a"' a$'bat "a!' a"an%a b'"an#
"'s$*nt'nu'tas a"a(a/ !untu/an1(*n#s*!an ba4' ,3"# )a'(u!-.
Da!' +n4(asan "' atas &a$a +!(u a"an%a suatu ana('s's tntan# b'"an#
$t'"a$&n!usan %an# nant'n%a b!tu4uan untu$ &n#ta/u' $&un#$'nan
t!4a"'n%a $(*n#s*!an ba4' "an 0a!a +nan#anann%a.
Untu$ &(a$u$an +n('t'an 'n' +n('t' a$an &n##una$an +!*#!a&
$*&+ut! ,s*)t3a!- untu$ &&+!&u"a/ s!ta &n4a&'n $a$u!atan "an
$t('t'an "a!' /as'( %an# a$an "'"a+at. A"a+un +!*#!a& %an# a$an "'+a$a' %a'tu 5
6. CLASSE7 5 untu$ +n#$(as')'$as'an &asa batuan "n#an &t*" RMR.
8. DIPS "an ROCKWORK 9:: 5 untu$ ana('sa b'"an# $t'"a$&n!usan.
;. UNWEDGE 5 untu$ ana('sa $a!a$t!'st'$ $(*n#s*!an ba4' "an &nntu$an
baut batuan %an# ssua' untu$ &nan#an' (*n#s*!an %an# &un#$'n t!4a"'.
C. TUJUAN PENELITIAN
Tu4uan %an# 'n#'n "'0a+a' "a(a& +n('t'an 'n' a"a(a/ untu$ &n#ana('sa
suatu 4a!'n#an b'"an# $t'"a$&n!usan +a"a suatu (uban# bu$aan2 $&u"'an "a!'
/as'( ana('s's 'n' a$an "' "a+at +a!a&t!+a!a&t! "'&ana suatu "a!a/ "a(a&
(uban# bu$aan 'tu b!+*tns' &n#a(a&' $(*n#s*!an ba4' %an# "'a$'bat$an *(/
b'"an#b'"an# $t'"a$&n!usan ta"'.
Pn('t'an 'n' 4u#a a$an b!(an4ut sa&+a' 0a!a +nan##u(an#an
$(*n#s*!an ba4' t!sbut2 "a(a& /a( 'n' a$an "'+a$a' s'st& baut batuan ,!*0$
b*(t-.
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D. RUMUSAN MASALAH
6. Mn#ta/u' sb!a+a bsa! +n#a!u/n%a suatu 4a!'n#an b'"an#
$t'"a$&n!usan +a"a suatu (uban# bu$aan t!/a"a+ t!4a"'n%a
$(*n#s*!an ba4'.
8. Mnntu$an "a!a/"a!a/ &ana %an# b!+*tns' t!4a"' suatu $(*n#s*!an
ba4' %an# "' +n#a!u/' *(/ b'"an# $t'"a$&n!usan.
;. M&+(a4a!' $a!a$t!'st'$ "a!' $(*n#s*!an ba4' %an# $&un#$'nan t!4a"'
untu$ $&u"'an &nntu$an 4n's baut batuan %an# ssua' "' t'n4au "a!'
s#' $*n*&' "an s#' )a$t*! $a&anann%a.
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BAB II
ANALISIS MASALAH
A. DASAR TEORI
A.1. Bidang Ketidakmener!an
B'"an#b'"an# $t'"a$&n!usan %an# a$an san#at &&+n#a!u/' "a!'
t!4a"'n%a suatu $(*n#s*!an ba4' "a(a& suatu (uban# bua$aan a"a(a/ < $$a!
,4*'nt-2 ssa! ,)au(t-2 "an +!('+atan ,)*("'n#-. Stu$tu! $$a! a$an ban%a$ "' 4u&+a'
"a(a& suatu (uban# bu$aan2 &a$a "a!' 'tu +!(u "'a"a$an suatu ana('sa untu$
&nntu$an $"u"u$an1a!a/ "a!' $$a! t!sbut.
Untu$ &(a$u$an suatu ana('sa b'"an# $t'"a$&n!usan "'#una$an
&t*"a stat'st'$. Mt*"a stat'st'$ a"a(a/ suatu &t*" %an# "'t!a+$an untu$
&n"a+at$an $'sa!an /a!#a !ata!ata atau /a!#a &a$s'&u& "a!' s4u&(a/ "ata
a0a$ satu 4n's st!u$tu!. Da!' &t*" 'n' &a$a "a+at "'$ta/u' $0n"!un#an
$0n"!un#an2 bntu$ +*(a atau+un $"u"u$an u&u& "a!' 4n's st!u$tu! %an#
s"an# "'ana('sa. Mt*" stat'st'$ t!"'!' "a!' "ua &t*" %an#
+n#(*&+*$ann%a "'"asa!$an atas ban%a$n%a +a!a&t! %an# a$an "'$ta/u'
/a!#a stat'st'$n%a2 %a'tu 5
6. Mt*" stat'st'$ "n#an satu +a!a&t!
8. Mt*" stat'st'$ "n#an "ua +a!a&t!
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A.6.8. Mt*" stat'st'$ "n#an satu +a!a&t!
Da(a& &t*" 'n' +a!a&t! atau "ata %an# "'u$u! /an%a t!"'!' "a!' satu
unsu! +n#u$u!an. Jn's "'a#!a& "a!' &t*" 'n' a"a(a/5
6. D'a#!a& $'+as
8. D'a#!a& !*st
;. H'st*#!a&
A.6.8.6. D'a#!a& $'+as
Tu4uan "a!' +&buatan "'#!a& 'n' a"a(a/ untu$ &n#ta/u' a!a/
$(u!usan u&u& "a!' unsu!unsu! st!u$tu! %an# "atan%a /an%a satu unsu!
+n#u$u!an sa4a ,"ata ba!'n#-. Data"ata +n#u$u!an "'&asu$$an "a(a& suatu
tab( s/'n##a &&+!&u"a/ "a(a& +&buatan "'a#!a&.
Ga&ba! 8.6
Ana('s's D'a#!a& K'+as
A.6.8.8. D'a#!a& !*st
Tu4uan "a!' +&buatan "'a#!a& !*st a"a(a/ untu$ &n#ta/u' a!a/
$(u!usan u&u& "a!' "ata"ata "n#an satu +a!a&t! 2&'sa(n%a ba!'n#. Data
"ata ba!'n# 4u#a "'&asu$$an "a(a& tab( untu$ +&buatan "'a#!a& !*st.
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Ga&ba! 8.8
Ana('s's D'a#!a& R*st
A.6.8.;. H'st*#!a&
Tu4uan "a!' ana('s's /'st*#!a& a"a(a/ untu$ &n#ta/u' a!a/ $(u!usan
u&u& "a!' unsu!unsu! st!u$tu!.
Ga&ba! 8.;
Ana('s's H'st*#!a&
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A.6.;. Mt*" stat'st'$ "n#an "ua +a!a&t! ,"'a#!a& $*ntu!-
Mt*" 'n' "'t!a+$an untu$ "ata"ata st!u$tu! %an# &&'('$' "ua unsu!
+n#u$u!an s+!t' +a"a st!u$tu! #a!'s ,"atan%a t!"'!' "a!' Ba!'n# "an P(un#-2
atau st!u$tu! b'"an# ,"atan%a t!"'!' "a!' St!'$ "an D'+-. C*nt*/ "a!' &t*" 'n'
a"a(a/ "'a#!a& $*ntu!. D'a#!a& 'n' +&buatann%a "'"asa!$an +a"a +!'ns'+
+!'ns'+ +!*%$s' st!*#!a)' "an +!*%$s' $utub. Tu4uan "a!' "'a#!a& 'n' a"a(a/
untu$ &n"a+at$an /a!#a $!a+atan ,"ns'tas- &a$s'&u& "ata"ata %an#
"'ana('sa2 s/'n##a "a!' "a+at "'$ta/u' *!'ntas' atau $"u"u$an u&u& st!u$tu!
%an# "'ana('sa.
Ga&ba! 8.=
,a- Pn#+(*tan "ata"ata +n#u$u!an $$a! ta!'$ "' atas 4a!'n#>P*(a!E?ua(A!a(@
,b- Mnntu$an +usat+usat t't'$ $!a+atan "' atas 4a!'n# >Ka(sb$@
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Ga&ba! 8.
,a- Pna!'$an $*ntu! $!a+atan +a"a "'a#!a& $*ntu!
,b- D'a#!a& $*ntu! %an# "'/as'($an
A.6.=. Ana('s's Dn#an P!*#!a& DIPS "an R*0$W*!$ 9::
Dn#an &n##una$an $"ua +!*#!a& 'n' a$an &&u"a/$an "an (b'/
a$u!at "a(a& &(a$u$an ana('sa b'"an# $t'"a$&n!usan2 s!ta a$an
&&+!'n"a/ "a(a& +n%a4'an /as'( "a!' ana('sa. Data"ata %an# "'"a+at
"'(a+an#an ,b!u+a St!'$ "an D'+- $&u"'an "' 'n+ut $ "a(a& $*&+ut! &a$a
a$an "'/as'($an #a&ba!an /as'( ana('sa s+!t' "' ba3a/ 'n'.
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Ga&ba! 8.
Ana('s's D'a#!a& R*st ,ROCKWORK 9::-
Ga&ba! 8.
Ana('s's H'st*#!a& ,ROCKWORK 9::-
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Ga&ba! 8.
Ana('s's D'a#!a& K*ntu! ,DIPS-
A.". L#ng!#ran Ba$i %&edge 'ai(re)
L*n#s*!an ba4' "a+at t!4a"' +a"a suatu batuan 4'$a t!"a+at (b'/ "a!' satu
b'"an# (&a/ %an# bbas "an sa('n# b!+*t*n#an. Su"ut +!+*t*n#an anta!a
b'"an# (&a/ t!sbut /a!us (b'/ bsa! "a!' su"ut #s! "a(a& batuann%a. B'"an#
(&a/ 'n' "a+at b!u+a b'"an# ssa!2 !$a/an &au+un b'"an# +!(a+'san.
Ca!a (*n#s*! suatu ba4' "a+at &(a(u' sa(a/ satu atau bb!a+a b'"an#
(&a/n%a2 atau+un &(a(u' #a!'s +!+*t*n#an $"ua b'"an# (&a/n%a. Da(a&
ana('s's "n#an &t*" H*$ "an B!*3n (*n#s*!an ba4' "'an##a+ /an%a a$an
t!4a"' +a"a #a!'s +!+*t*n#an $"ua b'"an# (&a/.
N
E
S
&
CONTOUR
SCHMIDT POLECONCENTRATION* #+ t#ta( ,er
1.- * areaMinimm C#nt#r 1 ./C#nt#r Inter0a( 1./M a .C#n 2e ntr ati# n 3 .- 4
E5UAL AREALO&ER
116 P#(e! P(#tted1-7 Data Entrie!
ANALISIS DATA
8UDHA "39N#09--
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A.8.6. Ana('s's "n#an +!*#!a& UNWEDGE
Has'( "a!' ana('s's b'"an# $t'"a$&n!usan "a!' +!*#!a& DIPS b!u+aa!a/ "a!' bb!a+a st 4*'nt atau a!a/ u&u&n%a2 s+!t' +a"a #a&ba! 8.:.
Ga&ba! 8.:
A!a/ u&u& "a!' b'"an# $t'"a$&n!usan
K&u"'an "a!' $t'#a st b'"an# $t'"a$&n!usan t!sbut "''n+ut $"a(a&
+!*#!a& UNWEDGE 2 $&u"'an +!*#!a& a$an &na&+'($an (*$as' "an "'&ns'
"a!' (*n#s*!an ba4' "a!' ata+2 (anta' "an "'n"'n# ,Ga&ba! 8.6-.
1
1
"
"
6
6
N
E
S
&
MAJOR PLANES
ORIENTATIONS: TREND;PLN<.1 "16;61
" 6"4;1=
6 -4=;6>
E5UAL AREALO&ER
11" P#(e! P(#tted1-4 Data Entrie!
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Ga&ba! 8.6
L*n#s*!an ba4' %an# t!4a"' "' ata+2(anta' "an "'n"'n# %an# "'sbab$an $a!na
$t'#a st b'"an# $t'"a$&n!usan +a"a #a&ba! 8.:
Da!' $&+at (*n#s*!an ba4' "'atas 4u#a a$an &n#/as'($an *ut+ut b!u+a t*nas
(*n#s*!an %an# t!4a"'2 a!a/ (*n#s*!an s!ta )a$t*! $a&anan2 s+!t' +a"a tab( I.
Ta?e( I
Karakteri!tik L#ng!#ran 8ang Mngkin Ter$adi
Wedge Weight-tones Failure mode Factor ofsafety
Roof wedge 13 Falls 0
Side wedge 1 3.7 Slide on J1/J 0.3!
Side wedge 3.7 Slide on J3 0."
Floor wedge #3 Sta$le %
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A.8.8. Pnan#anan (*n#s*!an ba4' "n#an Baut Batuan ,R*0$ B*(t-
Baut batuan "'+an"an# sba#a' suatu s'st& +n%an##a %an# &&+un%a'
8 &'s' $(as'$2 %a'tu 5
Mn%an##a batuan %an# +*tns'a( utnu$ !untu/
Mna/an atau ba/$an &n#/nt'$an +!+'n"a/an +!&u$aan (uban# batuan
Fun#s' %an# b!/ubun#an "n#an $"ua /a( 'n' a"a(a/ 5
6. Fun#s' Pna/an ,Sus+ns'*n-
8. Fun#s' Pn$an
;. Fun#s' Pn#uat ,R'n)*!0&nt-
Jn's baut batuan "'b"a$an b!"asa!$an 0a!a +n#'$atann%a a"a bb!a+a
&a0a&2 %a$n'5
a. Baut batuan "n#an 0a!a +n#'$atan &$an's
b. Baut batuan "n#an 0a!a +n#'$atan %an# &n##una$an at $'&'a
0. Baut batuan "n#an 0a!a +n#'$atan Gs! ,F!'0t'*n An0/*!" R*0$ B*(t-
". Baut $ab( batuan.
K(an4utan ana('s's (*n#s*!an ba4' "n#an +!*#!a& UNWEDGE a"a(a/
+nan#anan (*n#*s*!an t!sbut. Da(a& +!*#!a& 'n' "a+at "' s'&u(as'$an
+&asan#an baut batuan %an# "'+!(u$an a#a! (*ns*!an t'"a$ t!4a"'. Jn's baut
batuan2 4u&(a/ "an +an4an# 4u#a "a+at "'$ta/u'. S'&u(as' +&asan#an baut
batuan +a"a $(*n#s*!an ba4' "a+at "'('/at +a"a #a&ba! 8.66.
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Ga&ba! 8.66
P&asan#an baut batuan +a"a $(*n#s*!an ba4'
B. DATA PENDUKUN<
Yan# "'&a$su" "n#an "ata +n"u$un# a"a(a/ "ata"ata %an# "a+at
&n"u$un# "ata"ata "a!' (a+an#an #una &n#ana('sa +!&asa(a/an %an# a"a
untu$ &n0a!' a(t!nat') +n%(sa'an &asa(a/.
Data +n"u$un# "a+at "'a&b'( anta!a (a'n "a!' "ata /as'( +n#a&atan "'
(a+an#an2 (a+*!an +n('t'an t!"a/u(u "a!' +!usa/aan2 b!*su!b!*su! "a!'
+!usa/aan2 "ata "a!' 'nstans' %an# t!$a't "an "a!' ('t!atu!('t!atu!.
C. ANALISA PEN8ELESAIAN MASALAH
P!&asa(a/an %an# a"a "' (a+an#an s(an4utn%a "'+(a4a!' "an "'$a4'
b!"asa!$an "ata %an# a"a2 ba'$ "ata %an# "'$u&+u($an "a!' /as'( +n%('"'$an
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&au+un "ata +nun4an# "an "'"u$un# b!ba#a' t*!' %an# &nun4an#
+!&asa(a/an t!sbut2 s(an4utn%a "'0a!'$an a(t!nat') +n%(sa'annn%a.
A"a+un !'n0'an "a!' ana('sa +n%(sa'an &asa(a/ "a(a& &(a$u$an ana('s's
t!/a"a+ b'"an# $t'"a$&n!usan "an $(*n#s*!an ba4' a"a(a/ sba#a' b!'$ut 5
1. Tahap Persiapan
Pa"a ta/a+ 'n' a$an "'+(a4a!' tntan# )un#s'1tu4uan "a!' "'buatn%a (uban#
bu$aan t!sbut2 u$u!an %an# "''n#'n$an2 "an ba#a'&ana bntu$ (uban#
bu$aan %an# a$an "'buat s!ta a$t''tas +n##a('an (a'n %an# b!"$atan
"n#an (uban# bu$aan %an# a$an "'buat.
2. Tahap Penyelidikan Pendahuluan
Ta/a+ +n%('"'$an +n"a/u(uan "'&a$su"$an untu$ &n"a+at$an "s$!'+s'
u&u& "a!a/ %an# a$an "'s('"'$'2 &('+ut' +n#a&b'(an 0*nt* batuan "n#an
+&b*!an2 +n"u#aan #*)'s'$a ,b'(a &un#$'n-2 +n#u$u!an t$anan a'!2
+n#u$u!an +!&ab'('tas "a!' &assa batuan2 "an +n%('"'$an t!/a"a+
$a"aan #*(*#' s$'ta!.
3. Tahap Penyelidikan Terinci
a. Pnntuan +n#$(as')'$as'an &assa batuan
Pa!a&t! %an# "'+!(u$an untu$ +n#$(as')'$as'san &assa batuan a"a(a/
b*b*t 's'2&*"u(us (ast'$2 $*)'s'n P*'ss*n2 $uat t$an un'a$s'a(2 $uat #s!2
$*/s'2 su"ut #s! "a(a&2 t#an#an 'n s'tu "an bb!a+a +a!a&t! (a'n2
s+!t' $"u"u$an u&u& a!a/ b'"an# $$a!2 "ata s+as' b'"an# $$a!2 $*n"'s'
a'! tana/ +a"a $"a(a&an t!tntu "an RD untu$ t'a+ $"a(a&an. K&u"'an
"ata"ata t!sbut "' 'n+ut $"a(a& +!*#!a& CLASSE7.
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b. Ana('s's t!/a"a+ b'"an# $t'"a$&n!usan
M(a$u$an +n%('"'$an "an +n#u$u!an t!/a"a+ b'"an#b'"an#
$t'"a$&n!usan %an# a"a "a(a& suatu s0t'*n (uban# bu$aan2 b'"an#
b'"an# %an# "'u$u! t!uta&a a"a(a/ st!u$tu! $$a!. St(a/ s&ua "ata $$a!
"'"a+at $&u"'an "' 'n+ut $"a(a& +!*#!a& DIPS "an ROCKWORK 9::
untu$ &n#ta/u' a!a/ u&u& "a!' $$a! t!sbut.
0. Ana('s's t!/a"a+ $(*n#s*!an ba4' "an 0a!a +nan#anann%a
St(a/ "ata a!a/ u&u& "a!' b'"an# $t'"a$&n!usan "'"a+at "a!' +!*#!a&
DIPS2 $&u"'an "' 'n+ut $"a(a& +!*#!a& UNWEDGE untu$ &n#ta/u'
$&un#$'nan (*n#s*!an ba4' %an# t!4a"' s!ta &n#ana('sa $&un#$'nan
t!sbut. Yan# t!a/$'! %a'tu &nntu$an 4n's baut batuan %an# ssua'
untu$ &n#/'n"a!' $(*n#s*!an ba4' t!sbut.
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BAB III
PENELITIAN DI LAPAN<AN
A. METODOLO<I PENELITIAN
D'"a(a& &(a$sana$an +n('t'an +!&asa(a/an 'n'2 +nu('s &n##abun#$an
anta!a t*!' "n#an "ata"ata (a+an#an2s/'n##a "a!' $"uan%a "'"a+at
+n"$atan +n%(sa'an &asa(a/. A"a+un u!utan +$!4aan +n('t'an %a'tu 5
6. Stu"% ('t!atu!2 b!*su!b!*su!2 (a+*!an +n('t'an t!"a/u(u "a!' +!usa/aan.
8. Pn#a&atan (an#sun# "' (a+an#an2 "'(a$u$an "n#an 0a!a +n'n4auan
(a+an#an untu$ &(a$u$an +n#a&atan (an#sun# t!/a"a+ s&ua $#'atan
"' "a!a/ %an# a$an "'t('t'
;. Pn#a&b'(an Data2 "n#an +n#u$u!an (an#sun# "' (a+an#an &au+un
+n('t'an "' (ab*!at*!'u&.
=. A$u's's' Data
a. Pn#(*&+*$an "ata
b. Ju&(a/ "ata
0. U4' !a('tas
. Pn#*(a/an "ata
. Ana('s's /as'( Pn#*(a/an "ata
. Ks'&+u(an
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B. JAD&AL KE<IATAN PENELITIAN
Rencana Kegiatan
Minggu I II III IV V VI VII VIII
Studi Literatur
Penyelidikan Geologi lokal
Pengumpulan data untukpengklasifikasian massa
batuanPengukuran data bidang
ketidakmenerusan
Analisis bidangketidakmenerusan terhadap
kelongoran baji
Penyusunan LaporanPenelitian
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C. RENCANA DA'TAR PUSTAKA
6. B'0$(2 J*/n.2 Kus(2 T.2 K'n#2 E.H.2 >Tunn( En#'n!'n# Han"b**$@2
C/a+&an Ha((2D+. BC.2 8n" "'t'*n2 N3 Y*!$2 6::.
8. H*$2 E2 Ka's!2 P.K2 Ba3"n2 W.F.2 >Su++*!t *) Un"!#!*un" E0aat'*ns
'n Ha!" R*[email protected] A.A. Ba($&a2 R*tt!"a&2 B!**$)'("2 6::.
;. K& M0 C(a%2 >T/ Ma++'n# *) G*(*#'0a( St!u0tu!s@2 J*/n W'((%
S*nss2In02 N3 Y*!$2 6:.
=. P!ast't/* Ba&ban#2 Hn"a!%*n*2 >G*(*#' St!u$tu!@2 Ptun4u$ P!a$t'$u&2
UPN >t!an@ Y*#%a$a!ta26:::.
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RENCANA DA'TAR ISI
KATA PENGANTAR
RINGKASAN
DAFTAR ISI
DAFTAR GAMBAR
DAFTAR TABEL
DAFTAR LAMPIRAN
BAB
I. PENDAHULUAN
II. TINJAUAN UMUM DAERAH PENELITIAN
A. LOKASI DAN KESAMPAIAN DAERAH
B. KEADAAN GEOLOGI
C. IKLIM
D. TINJAUAN SINGKAT PT. FREEPORT INDONESIA COMPANY
E. DEEP ORE ZONE ,D.O.Z-
III. PENGKLASIFIKASIAN MASSA BATUAN
A. MASSA BATUAN
B. PRINSIP KLASIFIKASI MASSA BATUAN
I. ANALISIS BIDANG KETIDAKMENERUSAN
A. METODE ANALISIS
B. ARAH UMUM DARI BIDANG KETIDAKMENERUSAN
. ANALISIS KELONGSORAN BAJI
A. PARAMETER KELONGSORAN BAJI
B. PENCEGAHAN KELONGSORAN BAJI
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I. PEMBAHASAN
A. DAERAHDAERAH RAWAN TERJADI KELONGSORAN BAJI
B. PENGGUNAAN ROCK BOLT
II. KESIMPULAN DAN SARAN
DAFTAR PUSTAKA
LAMPIRAN
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ANALISIS BIDAN< KETIDAKMENERUSAN UNTUK
MEN<ANTISIPASI TERJADIN8A KELON<SORAN BAJI PADA
LUBAN< BUKAAN TAMBAN< BA&AH TANAH DI D.O.@
PT. 'REEPORT INDONESIA COMPAN8
PROPOSAL TU<AS AKHIR
Dibuat untuk memenuhi persyaratan dalam pelaksanaankerja praktek lapangan
O(e
8UDHA EKO MUR&ANTO
73-/-;TA
JURUSAN TEKNIK PERTAMBAN<AN
'AKULTAS TEKNOLO<I MINERAL
UNIERSITAS PEMBAN<UNAN NASIONAL ETERAN
8O<8AKARTA
"--1
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ANALISIS BIDAN< KETIDAKMENERUSAN UNTUK
MEN<ANTISIPASI TERJADIN8A KELON<SORAN BAJI PADA
LUBAN< BUKAAN TAMBAN< BA&AH TANAH DI D.O.@
PT. 'REEPORT INDONESIA COMPAN8
PROPOSAL TU<AS AKHIR
O(e
8UDHA EKO MUR&ANTO
73-/-;TA
D'stu4u' *(/ 5
D*sn 3a(' P&b'&b'n# I
,I!. In"a/ St%*3at'2 MT- , -