- May dao gau thu~ thich hgp kh6i dao cao hon m?tbdng may dUng va nang sudt cao.
BAI T~PCHUONG 4 I1MAYU
I1MAYUI
Bai tap 1
MuBrt dao v~ ehuyen mgt khBi luqng dAt la:480.000m3;(Lo~ dAt cAp III). Bfulg lo~ may tii CATERPILLAR - D4H- 11(5S).
Yeucflu:
Ti€n de)till eong trong tho; gian 30 ngay,
TB ehue may tii thi eong: 2,5 cal I ngay; Me)t ea may lam vi~e: 8 gia. dn bao nrueu may tii d~ thi eong hoan thilnh khBi luqng dting ti€n dg? Cho bi€t cae thong sB ky thu~t etia may tii va cae di~u ki~n khae:
- Chi~u dill lum ben: L =4,20 m
- Chi~u eao lum ben: H =0,97 m
- V~ tBe khi may dao dat: VI =3,6 km/gia.
-v~tBe khi may v~ ehuy~n dat: V2 =5,4 km/gia.
-v~tBe khi may khong v~ chuy~n dAt: Vo=9,0 km/gia.
- Quang duimg may dao dAt: h =20 m.
- Quang duimg may v~ chuyen dat: lz =30 m. - Tho; gian nang hl.llum ben: th=3 (s);
- Tho; gian sang sB: tc=2 (s);
- G6e ehily t\l nhien etia khBi dAttruae lum ben khi tii: <po=450
- Cae h~ sB khac: kt= 1,20; kd=1,10; ktg= 0,80.
Bai tlip 2
MuBn san m(jt bfulg eong trinh e6 khBi luqng dao v~ chuyen la: 285.000m3; BAt cAp III. bfulg 10l.limay tii CATERPILLAR - D6D- (6S).
Yeue~u:
Ti€n de)thi eong trong tho; gian 25 ngay,
TB ehue may tii thi eong : 2,5 cal I ngay; Me)t ea may lam vi~e: 8 gia.
C~ bB tri bao nhieu may tii d~ thi eong hoan thilnh khBi luqng dung ti€n de)? Cho bi€t cae thong sB ky thu~t ella may tii va cae di~u ki~n khae:
- Chieu dai lum ben: L =370 cm
- Chieu cao lum ben: H =112 cm
- V~ t6c khi may dao dAt: VI =3,6 km/gib.
-v~t6c khi may V~ chuy~n dAt: V2=7,2 km/gib. - V~ t6c khi may khong v~ chuy~n dAt: Vo =12,6 km/gib ..
- Quang dubng may dao dAt: h =10 m.
- Quang dubng may v~ chuy~n dAt: 12 =60 m. - Thai gian nang h~ lucri ben: th =4 (s);
- Thai gian sang s6: to =6 (s);
- Goc chay tg nhien cila kh6i dAt truac lum ben khi ill:<po=420
- Cac h~ s6 khac: k,=1,20; k.t=1,20; k'g=0,80.
Bai tlip 3
Mu6n san m~t bfulg cong trinh co kh6i lugng dao v~ chuy~n la: 416.000m3; BAt cAp III. bfulg lo~i may iii CATERPILLAR - D7G- (7S).
Yeu eliu:
Ti~n dc)thi cong trong thai gian 20 ngay,
T6 chuc may iii thi cong: 2 cal 1 ngay; Mc)t ca may lam vi~c: 8 gib. cAn bao nhieu may ill d~ thi cong hoan thanh kh6i lugng dUng ti~n dc)?
Cho bi~t cac thong s6 ky thu~t Clla may iii va cac dieu ki~n khac:
- Chieu dai lum ben: L=3,65 m
- Chieu cao lucri ben: H=1,27 m
- V~ t6c khi may dao dAt: VI =5,4 km/gib.
-v~t6c khi may V~ chuy~n dAt: V2=9,0 km/gib.
-v~t6c khi may khong v~ chuy~n dAt: Vo = 12,6 km/gib.
- Quang dubng may dao dk h =30 m.
- Quang dubng may v~ chuy~n dAt: h =40 m. - Thai gian nang h~ lucri ben: th =4 (s);
- Thbi gian sang s6: to =5 (s);
- Goc chay tg nhien cila kh6i dAt truac lucri ben khi iii: <po=450
- Cac h~ s6 khac: k,=1,20; k.t= 1,20; ktg=0,80. II1MAyc~p:
Bait9P
Mu6n dao v~ chuy~n kh6i lugng dAt la: l.760.000m3; Lo~i dAt cAp III. Bfulg lo~i may c~p KOMATSU WS 23S - 1.
Yeu eliu:
Ti~n dc)thi cong trong thai gian 250 ngay,
T6 chuc may c~p thi cong : 2 call ngay; Mc)t ca may lam vi~c: 8 gib.
cAn b6 tri bao nhieu may c~p d~ thi cong hoan thanh kh6i lugng dilng ti~n dc)? Cho bi~t cac thong s6 ky thu~t cila may c~p va cac dieu ki~n khac:
- Dung tich thilng c~p: q = 16,00m3 •
-v~t6c khi may dao dk VI = 1,80km/gib.
V3 = 3,60 kmlgia. Vo = 36,00 kmlgia. II =60m. h =2.000m. h =60m. t =29 (s).
-v~t6c khi may d6 dAt:
- V~ t6c khi may kh6ng v~ chuy~n dAt: - Quang ducrng may dao dftt:
- Quang ducrng may v~ chuy~n dAt: - Quang ducrng may d6 dftt:
~ Thai gian may quay dAu:
- Cac he s6 khac: k.l = 1,00; ktg'=0,80; kt= 1,20.
III/ MAy BAM:
Biii tv.p
Mu6n dAm kh6i lugng dAt la: 2.016.000m3; LOl;UdAt cAp III. Bkg IOl,limay dAm rung hieu: KOMATSU - RF 09.
YeucAu:
Ti~n dQ thi c6ng trong thai gian 50 ngay,
T6 ch(rc may Cl,lPthi c6ng : 3 cal I ngay; MQt ca may lam viec: 8 gia.
cAn b6 tri bao nhieu may dAm &thi c6ng hoan thanh kh6i lugng dUng ti~n dQ? Cho biet cae thOng s6 ky th~t cua may dAm va cac di~u kien khac: .
- B~ rQng vet dAm: B = 4,68 m ..
- Khoang cach trUng nhaugiii'a 2 vet dAm: b = 0,40 m.
-v~t6c di chuy~n Clla may dAm khi dAm: v = 7,00 kmlgia. - He s6 thai gian sir d1,Jl1gmay: . Ktg = 0,80.
- Chi~u sau tac d1,Jl1gcua dAm: h = 0,35 m.