kholing cach d~n ddu kenh Ia ch~ 100m, 200m ... cMn 1000m, 200Om vi tri kenh dAi huang, vi tri dja hinh kenh thay dAi dQt ngQt, vi tri co cong trinh tren kenh .
2.7. BANvE TmET Kt KtNH
2.7.1. Khlii ni~m
Blin ve thi~t k~ cong trinh (hay kenh) la cac hinh ve the hi~n du ~o, nch thuac Clla cae bQ ph~ cong trinh, the hi~n quan h~ giita cac bQ ph~ Clla cong trinh voo nhau ... de nguOi dQc co the hieu dugc cAu ~o Clla cong trinh ho~c de dimg lam can CII de xiiy d\ffig cong trinh.
TUy vao tirng buac thi~t k~ rna blin ve cong trinh co cach the hi~n khac nhau, til
blin ve phac thao ( chi ve cAu ~o sabQ clla cac bQ ph~ chinh, bQ ph~ quan trQng) d~n blin ve chi ti~t (The hi~n chi ti~t cAu~ clla tAt ca cac bQph~ Clla cong trinh).
2.7.2. Lip ban ve thi@t k@kenh
Blin ve thi~t k~ kenh phill the hi~n dugc cae nQi dung sau:
1- The hi~n tuy~n kenh tren m~t bAng (sa hQa tuy~n), vi tri kenh lAynuac til kenh dp tren ( n~u la kenh nhanh).
2- Cac thong sAky thuit Clla kenh hay tUng dOl;lllkenh (Q, i, b, h, V ... ).
3- Cac d~ trung Clla m~t c~t dQc (dQ d6c; cao trinh ba, day kenh, m\lc nuac thik k~ ... dQc kenh):
4- Ten, vi tri xay d\ffig Clla cac cong trinh tren kenh dQc theo tuy~n kenh. 5- Bling thang ke 56 lugng cac dIng trinh tren kenh
6- M~t c~t ngang dl;ridi~n ( dien hinh) clla kenh hay tirng dOl;lllkenh.
7- Cac m~t c~t ngang xiiy d\ffig dQc kenh (~i cac vi tri co ten tren c~t dQc ). 8- Bling tinh tolin khai lugng xiiy d\ffig.
9- Bling tAng hgp kh6i lugng xiiy d\ffig.
10- Nhitng ghi cM cdn thi~t ve blin ve (cac blin ve lien quan, 56 ghi nch thuac, cac nQi dung rna hinh ve khong the hi~n dugc ... ), nhitng yeu cdu, chi dfuI khi thi cong, qulin Iy ...
11. Ca quan, ca nhlln l~p thi~t k~, thb dinh, phe duy~t thi~t kLngay thang thi~t k~, thb djnh, phe duy~t.
, ~goai ra cdn chli y r~g blin ve phili tuiin thu dUng theo tieu chudn blin ve kY thu~t ( kho giiiy, duang net, chit viet...)
Khi I~p blin ve co the ve, tolin bQ nQi dung tren trong 1 blin ve va ~Qi ten la •• c~t dQc, n~ang kenh ... " ho~c co the ve cac ~Qi dung tren vao 2 b~ ve la •• cat dQc kenh ... " va ••cat ngang kenh ... " . Cac blin ve ••cat dQc kenh ... " va ••cat ngang kenh ... " cling co the ve trong 2 ho~c nhieu ban ve han n~u kenh qua dill.
Blin ve ••c~t dQc kenh " the hi~n cac nQi dung til 1+ 6, 8 va 10
Blin ve" dt dQc kenh " thuang dung ty I~ ve: Theo phuang dQc kenh: 1/1000, 1/2000; theo phuang dUng: 1/100, 1/200
Blin ve" c~t ngang kenh " the hi~n cae nQi dung til7,8,9 va 10.
Blin ve •• c~t ngang kenh " thuang dimg ty I~ ve: 1/25, 1/50, 1/100, 1/200 ( 2 phuang ve lAy ty I~ nhu nhau).
Hinh ve biti t~p2-2.
Khi I~p ban ve kenh n6u ban ve chua phai la "bim ve thi c6ng" thi cac ni)i dung neu tren co the luQ'Cbo bOt, vi d\l: m\lc 7 co the kh6ng cAn ve; m\lc 3 co the chi cAn tinh va ve crmi)t s6 it vi tri ~ bi~t, cAn thi6t.
cAuHOI ON TAp CHUONG 2
1. Hay ke ten cac tai li~u cM y6u dimg de thi6t k6 kenh. Neu y nghia Clla mlii tai li~u?
2. Neu cac nguyen tAc chinh de Iga chQn tuy6n kenh, di) d6c day kenh, dQ xoai mlii kenh, di) nhlim long kenh.
3. Neu cach tinh lUll luqng thgc cAn, h~ s6 lQi d\lng cua kenh co di~n tich tum nho han 300ha.
4. Neu y nghia Clla cac 10(lilUll luqng trong kenh tum.
5. Hay trinh bay cac d(lng m(it-c~t ngang Clla kenh hcr; neu d(ic diem va dieu ki~n Slr d\lng clla mlii lo(li.
6. Neu khlii quat cach xac dinh ducrng mgc nuac thi6t k6 trong kenh. 7. Neu cac ni)i dung cAn thi6t k6 ella m(it dt ngang, m(it c~t dQc kenh M.
8. Neu khlii quat cach tinh toim chQn m(it dt uOt thi6t k6, m(it ciit thgc thi6t k6 clla kenh hcr.
9. Neu c~c yeu c~u v8 ban ve thiet ke kenh.
BAI T~P CHUONG 2
Bai 2-1. Hay tinh lUll luqng thiet ke Clla kenh chan ret, biet kenh tumcho Illa co W = 1,6 ha; q = 1,20 I/s.ha
Bai 2-2. Kenh chinh mi)t h~ th6ng tum co sa db b6 tri kenh nhu hinh ve. H~ s6 tum clla h~ th6ng: cho lila ql = 1,25 I/s.ha; cho mau q2=0,56 l/s.ha; toan bi) cac kenh d8u lam bdng dat, kh6ng co lap ao bQc.
86 li~u v8 cac kenh:
- NI: Mcr t(li vi tri Ko+900
Clla KC; tum cho Illa: WI= 70 ha; cho mau: W2=40 ha; kenh dai 4,2 K km, dat lam kenh co tinh tham it. 0 KC
Thiet ke da chQn i=4. 10-4; dQc kenh co: 6 c6ng qua ducrng, 1 c~u mang, 4 c6ng tieu duai kenh,
12 c6ng d~u kenh, 1 c6ng di8u tiet. - N2: Tum cho Illa: WI = 170 ha; cho mau: W2= 0 ha; kenh
dai 3,5 km, dat lam kenh co tinh tham Ian.
Thiet ke da chQn i=2. 10-4; DQc kenh co: 5 c6ng qua ducrng, 1 c6ng lubn, 6 c6ng tieu dum kenh, 8 c6ng d~u kenh, 1 c6ng di8u tiet.
_ NJ: Tum cho hla: co, = 250 ha; cho mau: CO2= 0 ha; keOOdai 3,8 KIn, ddt lam .keOOco tiOOthdm trung biOO. keOOco tiOOthdm trung biOO.
Thilh k€ dii chQn i = 2. 10-4; DQc keOOco: 1 b~ nuac ngay sau c&ng dAu kenh N3,
7 c&ng qua duOng, 2 c&ng lu6n, 5 c&ng tieu dum keOO, 7 c&ng dAu keOO, khong co c&ngdi~u ti€t. di~u ti€t.
- K@nh chfnh: Chi~u dai keOO4,6 Ian; Ddt lam keOOla ddt pha set vila.Thi€t k€ dii chQn i = 2. 10-4 Thi€t k€ dii chQn i = 2. 10-4
Do~ kenh til Ko d€n 1<0+900: keOOco: 2 c6ng qua duOng, I cAu mang, 4 c&ng tieudumkeOO. dumkeOO.
Do~ keOOtilKo+900 d€n Kc: keOOco: 5 c&ng qua duOng, 1 cAu mang, 6 c&ng tieudum keOO. dum keOO.
Y@ucAu
1. Hay tioo lUll lugng thi€t k€ adAu cUa cac keOO:NI, N2,N3, KC.
2. TiOOtoan chQn cao triOOm\lc nuac kh&ng ch€ tum t\l chay ~ dAu keOOchiOO.Bi€t: Dii tioo toan duQ'c cao trioo m\lc nuac kh&ng ch€ tum t\l chay t~ cu&i keOO Bi€t: Dii tioo toan duQ'c cao trioo m\lc nuac kh&ng ch€ tum t\l chay t~ cu&i keOO keOONllll: +6,20 m; cu&i keOOkeOON21a: +5,17m; cu&i keOOkeOON31a: +3,85m.
. Gh; ehu: Khi tinh cQt nuac tAn thAt C\lCbQ qua cac cong triOO tren keOO co th€tham khao TCVN 4118-85 ho(ic chQn sO"bQ OOu sau: c&ng qua duOng, c&ng dAu keOO, tham khao TCVN 4118-85 ho(ic chQn sO"bQ OOu sau: c&ng qua duOng, c&ng dAu keOO, c6ng di€u ti€t: 5+ 1Ocm; cAumang: 15+20cm; c&ng lu6n 20+ 30cm
Bill 2-3. T~ di€m K, +600 clla keOON4 clla mQt h~ th&ng tum co ma keOON4-s conhi~m V\I d€ chia nuac vao cac keOOchan r€t ( khong co keOOdfuJ cdp dum). KeOON4-s nhi~m V\I d€ chia nuac vao cac keOOchan r€t ( khong co keOOdfuJ cdp dum). KeOON4-s
dai 550m; i = 1/1000; di€m kh&ng ch€ tum t\l chay chQn t~ cu&i keOOla + 1.62m.
Hiiy tiOO toan cao trioo m\lC nuac kh&ng ch€ tum t\l chay ~ di€m K, +600 cllakeOON4 theo di€m kh6ng ch6 tren. keOON4 theo di€m kh6ng ch6 tren.
Bill 2-4. Thi€t k€ m(it c~t ngang cUa keOO ha m(it c~t hinh thang. Bi€t: keOO lakeOO ddt, vm ddt d~p keOOla ddt set pha vila; dung trQng kho YK = 1,45 T/m3; Vkl = 0,20 keOO ddt, vm ddt d~p keOOla ddt set pha vila; dung trQng kho YK = 1,45 T/m3; Vkl = 0,20
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ChU'O'llg3. THIET KE CONG TRINH TREN KENH
3.1.TAI LI~U TRIET KE vA TRINH TVTHIET KE CONG TRiNH
3.1.1. Tai Ii~u thiSt kS ,
M6i lo~ cong trinh tren kenh cAnco tlli lieu thiet ke khac nhau; dum day chi trinhbay cae tlli lieu cM yeu va chung nhdt; khi thiet ke my vao lo~ cong trinh, qUI mo cong bay cae tlli lieu cM yeu va chung nhdt; khi thiet ke my vao lo~ cong trinh, qUI mo cong trinh ta cAnl\fll chQn cac tai lieu cAnthiet cho timg lo~. MQt s3 tlli lieu cAnthiet cho timg lo~i cong trinh trong timg bai toan thiet ke se duQ'ctrinh bay C\lth~ trong timg nQi dung tinh toano
Cac tlli lieu chung nhdt, cbu yeu d~ thiet ke cong trinh tren kenh g6m:I. Tlli lieu dia hinh I. Tlli lieu dia hinh
- Ban d6 UTM Cllakhu V\IC:ThuOng dUngban d6 tYIe 1/50.000 ho~c 1/25.000- Hinh d6 khu tum: ThUOngdUngban d6 ty Ie 1/10.000; 1/5.000 - Hinh d6 khu tum: ThUOngdUngban d6 ty Ie 1/10.000; 1/5.000
- dt dQC,dt ngang tuyen cong trinh: C~t dQc, c~t ngang thuOng dUngtY Ie 1/200;1/100; 1/50; 1/25, chieu dai m6i m~t c~t dQc,ngang my thuQCvao kich thuoc m~t c~t dQc, 1/100; 1/50; 1/25, chieu dai m6i m~t c~t dQc,ngang my thuQCvao kich thuoc m~t c~t dQc, ngang (dg kien) Cllacong trinh.
- Hinh d6 tuyen xay dgng cong trinh: Ph~ vi do my thuQcvao kich thuoc m~t c~tdQc, ngang (dg kien) cua cong trinh. Lo~ nay thuOng chi cAncho cong trinh quy mo 16n, dQc, ngang (dg kien) cua cong trinh. Lo~ nay thuOng chi cAncho cong trinh quy mo 16n, dia hinh ph(rc ~p.
2. Till lieu khi tugng, thuy van, dong chay- Dieu kien khi tugng khu V\IC:Mua, gi6... - Dieu kien khi tugng khu V\IC:Mua, gi6...
- Dieu kien thuy van, dong chay: Dong chay, mgc nuoc bi~n, song su3i. .. trongkhu V\ICco lien quan den cong triOO;LUll lugng thao qua cong trinh va mgc nuoc thugng khu V\ICco lien quan den cong triOO;LUll lugng thao qua cong trinh va mgc nuoc thugng h~ lUllcong trinh tuang (mg.
3. Till lieu dia chdt, th6 nhufmg va cac tai lieu khac
- Dieu kien dia chdt dQctuyen cong trinh, cac bili v~t lieu (ddt) neu co.- D~c di~m ve m~t dem lUllV\IC,d~c di~m ve khu tieu (vm cong trinh tieu) - D~c di~m ve m~t dem lUllV\IC,d~c di~m ve khu tieu (vm cong trinh tieu)
- Dieu kien giao thOng .