parameter q system
TRANSCRIPT
7/23/2019 Parameter Q System
http://slidepdf.com/reader/full/parameter-q-system 1/2
KESTABILAN TAMBANG BAWAH TANAH
Tugas 3
Parameter Q-System
• Nilai RQD = 90%
• Jumlah Kekar (Joit Num!er"J# = $set Ra&om
• Pegisi material = material halus
'ika
• Ko&isi air &i Terooga = !asah (Joit et"J#
• Tegaga )erti*al (+,# = $ '.a
• Kuat teka !atua (a&esit# +*= /0 '.a
• S.a Terooga = 0m
• Terooga yg &iker1aka a&alah = .ermae utuk !egkel alat$ &i
!aah taah
• SR2 =Ko&isi kekar (Joit rough"Jr#"kekerasaKekasara
ituga4 Nilai Q!4 Nilai De*4 Tetuka
Ty.e kelas !atua
Jeis .eyagga yag &i.akai (legka.#
Jumlah .eyagga yg &i.akai
5am!arka .eam.agya ter.oga legka. &ega
&esai .eyaggaya
Q = RQD"J 6 Jr"Ja 6 J"SR2
SR2 = +*"+,
Keteraga 7
Dimesi terooga
P = 0m
8= m
T= m
Parameter Q-System
7/23/2019 Parameter Q System
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• RQD = 90%
• J = /
• Jr = 3
• Ja =40
• J = 40
• SR2 =$4 sehigga ilai .em!o!otaya $• S.a = 0 m
• +, = $ '.a
• +*= /0 '.a
a4 Q = (RQD"J# 6 (Jr"Ja# 6 (J"SR2# =Q = (90"$# 6 (3"40# 6 (40"$# = 4$ m
!4 De = S.a"SR2De = 0"$
= 04:3 m*4 44
• Ty.e kelas !atua = 'asi,e Ro*k
• Jeis .eyagga yag &iguakao Ro*k ;olt
S.asi = $4m
Pa1ag = 34m
o Shot*rete
<reior*e&
Te!al = 90mm
• Jumlah .eyagga yag &i.akai =
• 5am!ar .eam.ag terooga
SR2 =