AN TOAN - MOI TRJONG DAU KHI NGHIEN CUU TICH HOP MO HINH U\N TRUYEN DAU V A O BAN OO SO 3D CHO KHU VUG KHf - DIEN - DAM G A MAU OE PHUG VU GONG TAC UNO PHO SU GO TRAN DAU CN.VoVanAnhPha Vien Dau Viet Nam Email: phavva.cpse@vpi.pvn.vn Tom t i t Cdc mo hinh lan truyin dau biin tren the gidi hiin chd yeu dp dung cho edc sued trdn dau trin bien Boi vdi tdng khu vUc song, diiu kien dja hinh vd ehi dp ddng chdy phdc tgp cdn phdi cd nghien cdu ehi tiet cho tdng khu vue, de cd the xdy dung md hinh lan truyin ddu hiiu qud Tap dodn Ddu Viet Nam dd xdy dUng md hinh ton truyin ddu eho he thong sdng kenh khu vUe bdn ddo Cd IVIau, song ddy Id md hinh lan truyin ddu mpt ehieu, vdi ban nin dan gidn khdng the hien duac dge diem cua edc nhanh sdng trin khu vUc Ngodi ra, Vien Ddu Viet Nam da xdy dUng vd chuyen giao phdn mim bdn sd3D cho hi thdng sdng kenh cua bdn ddo Cd IVIau Vdl nhu edu cdp thiit eua thUc ti edng tdc dng phd sUcdtrdn ddu cung nhutdng cUdng phdt huy hieu qud cua nhdng nghiin cdu hien ed, bdi bdo si gidi thieu sUtich hap kit qud cua md hinh lan truyin ddu vdo bdn sd TUkhda: Sued trdn dau, mo hinh trdn ddu, dng sUcd, bdn dao Cd Mau Gidi thieu Khu vuc ban dao Ci Mau co nhieu cdng trinh diu khf quan nhU: Cum Khf - Dien - £)am Ca Mau, cac kho xang d i u Viec van chuyen hing hda, xang dau, vat lieu xay dung., bang dUdng thiiy qua khu vUc dan den nguycoxiyra sued tran dau cao, gay anh hudng den moi trudng tu nhien va hoat ddng kmh te - xa hoi dung phin mem tao ban dd sd khong gian 3D, xay dung ban sd 3D eho cic song/kenh thupc bin dio Ca Mau va de xult ufng dung cie hoat ddng dau khu vUc'! Day la hai phan mem dpc lap, chUa the tfch hop vdi de co the thuc hien tot nhat viec tfnh toan, mo hinh hoa tran dau khong gian 3D dap Ung tot nhat cho nhu cau hd tro viec ufng tran dau, do chua khai thac het hieu q u i ciia tufng phan mem Tip doin Dau khf Viet Nam/ Vien Dau khfViet Nam da xay dUng md hinh lan truyen diu theo mot hudng (ROSM version 1), la ket qui nghien ctfu ctia de tii"Nghien cu'u xiy dung mo hinh lan truyen dau tren he thdng song/kenh khu vuc Khf - Dien - €)am Ci Mau vl tuyen song/kenh van ehuyen vat lieu chinh eho khu vUc Khi - Dien - Dam", ed the i p dung de ehay mo hinh hda tran dau cho khu vufc bin dio Ca Mau Trong nam 2010, Trung tam Nghien ctfu vi Phat trien An toan vi Moi trudng Diu khf (CPSE) -Vien Diu khfViet Nam da xiy dung va chuyen giao phan mem tao ban sd 3D cho he thdng song kenh cua bin dao Ca Mau (CMPR 3D Map Version 1) thudc de til "Nghien cufu xiy 50 liHOl-SOi: Hinhl Ban so ID hien lai cuo khu wc ban tlao Co Mau PETROVIETNAM Vdl nhu cau cap thiet ve eong eu hd trp tfng sU cd tran d i u khu vufc, viec tfch hdp phan mem md hinh lan truyen d i u v i o b i n sd 3D cd y nghTa quan trpng; tang tfnh chinh xie va hieu q u i viee hd trp cho eong t i c u'ng phd su cd tran d i u Phin mem t r i n d i u sau tich hpp se h o i n chinh hdn va cic ket q u i dupe the hien true tiep tren b i n dd sd 3D giup de nhan bi^t v i phdi hpp iJng sued hieu q u i De thuc hien nhiem vu niy, nhom t i c g i i da tham khio v i stf dung cae ket q u i nghien cUu d i dupe eong bd nUde va the gidi, hpp t i c vdi chuy§n gia dau nginh ITnh vUe thuy lUe de thiet l i p va giii b i i t o i n ddng chiy cho khu vUc; dUa tren cie ket qua nghien cdu cd sdtoan hpc eua md hinh t r i n d i u tren song nude v i the gidi de thiet lap va giii quyet bai t o i n lan truyen d i u tren song; k h i o s i t thufc dia, thu thap, cap n h i t sd lieu eho khu vUc Khi - Dien - Dam n h i m phuc vu cho viec ket ndi mo hinh va mo hinh 2D Cic p h i n mem dupe tfch hpp va x i y dung mdi dupe thye hien tren nen tang OpenGL, suf dung ngdn ngCf l i p trinh C*+ tren mdi trudng Windows.Tae gia da tfch hdp hai phan mem hien cd: Phan mem se suf dung ket q u i ctia mo hinh lan truyen dau ket hpp vdi ligu euia b i n sd 3D de the hien ket qua eiia Tich hop phan mem mo hinh lan truydn dau vao ban s6 3D 2.1 Thudt todn lan truyin ddu [IJ Lan truyen dau la qua trinh lan truyen chat phUc tap cd ke tdi mdt chudi lien tiep cae q u i trinh thuy ddng luc hpc va hda ly Khi tran sdng, dau se bi troi dat v l p h i n tan theo ehieu eCia ddng chay Day la qua trinh chii yeu quyet djnh sU lan truyen eua dau song Cung vdi qua trinh tren, dau se t u loang tren mat nude t i c dong cuia gradient ap suit ngang, lUc eang mat ngoai Qua trinh thudng chf xay giai doan dau dau mdi tran (khoing 1-15 gid) Khi d i u t r i n ra, thude dieu kien khf tupng thuy van, dau se bi bdc hdi (ehi bay hai cac phan nhe) Ngoai ra, eon cd cic q u i trinh ly - hoa - sinh khac nhU; nhu tUdng hoa, bam vao bd, b i m vao cac hat ran (chang han phu sa), lang dong xudng d i y sdng, t i e dung hoa hpc vdi eae chat cd sdng Mdt sd lupng d i u se bj phin hiiy tUong tie smh hpc (phan hiiy vi sinh) Qui trinh phong hoa co the dan den sU thay ddl ldn eic die tinh ctia dau va thay doi su van ddng cua dau t r i n tren song theo thdi gian Mpt sd q u i trinh eo the l l m bien mat dau tren mat song qua trinh khic lai lam eho dau tdn tai lau dai hdn mo hinh lan truyen dau tren b i n dd sd 3D; x i y dung p h i n mem lan truyen dau 2D eho khu vUc cd so ll&u day du; xay De tinh toan qua trinh lan truyen cua d i u tren sdng, dUng module ket ndi md hinh 2D vdi md hinh I D eua cic c i n giii cic phuang trinh thuy ddng lUc hpe de tfnh t o i n khu vuc it sd lieu; suf dung cac eong nghe xtf ly dd hpa 3D van tdc dong chiy, sau giai phuong trinh t i i khuech de hoin thien hda ket qua md hinh tran d i u va the hien t i n de tfnh lan truyen dau Ngoai cac thdng sd cho bai ket qua tren khong gian 3D; kiem cho'ng thufc te tai hien t o i n thuiy lUe, cic thdng sd khac nhu lupng d i u t r i n , thdi trUdng nham d i n h gia tinh chfnh x l c va k h i nang tfng gian va dja diem d i u t r i n , loai d i u tran II cic thong sd dyng eiia mo hinh quan trpng de tfnh t o i n dxiac sU lan truyen eua dau Ddng b i n g sdng Ctfu Long cd mpt sd sdng Idn (song Tien, sdng Hiu, song Vam Co ), song cung co nhieu kenh nhd (chieu rpng ti^ vai j^ chuc den vai tram met, n h l t la ban d i o Ca Mau) Vi the, neu xay sU cd, chu yeu dau tran theo true song, dd chi can mo hinh lan truyen dau mpt chieu la du Vdi cie kenh/song cd chieu rpng ldn (vii tram met trd len), de c6 sd lieu ve ndng dp dau theo ehieu ngang can phai xay dung v l suf dung eie md hinh lan truyen d i u chieu ngang Mac dti chi quan t i m tdi lan truyen d i u theo chieu ngang nhung tfnh t o i n nhdm t i c g i i can cic thdng tin ve dieu kien bien thuy Hinh Qud trinh phong hoa ddu tmng moi truang MUKHI-SO 12/2014 51 - - ^ MiiPiL \mi^' \ AN TOAN - MOI TRUONG DAU KHI lUc v i d i u tren bien (lay tU mo hinh mdt ehieu hole p h i i fi: Trong giai doan can b i n g q u i n ti'nh - trpng luc dae trudc) Vi viy, de linh hoat va d i m b i o kinh te, nhdm t i c (t < T|), b i n kinh vet d i u R (em) tai thdi diem t lupng g i l da xay dung mdt mo hinh ghep ndi ehieu song dau Q (cm^) vdi ty trpng p^ tinh theo cdng thUc: (chieu ngang nhd) vdi mo hinh chieu ngang song cho cic doan sdng eo chieu rpng Idn 2.1.1 Tdi vd tdn xa ddu Tii l i q u i trinh lan truyen dau ddng chiy.Tan xa la qua Neu vet dau I I mdt d l i dai L va A = Q/L, cong thilc tinh ehieu rong vet dau B nhUsau: trinh phat sinh bd sung thuc hien trung binh theo chieu siu (hoac mat c i t cdng vdi hien tuang khuech t i n rdi vat ly, trUdng hPp mot chieu) Tii va tan xa l i cie hien tUpng v i t ly ehii yeu lam troi va phat tan dau tren mat v i nUdc tif chd den chd khic t i e dung ciia gio, song, cac loai ddng chay sinh bdi thuy trieu v l lUu lUpng thUdng ngudn Bit) ^f^iAs^^n r^-5^—^.0,08-0,10, r < r f2: Vao thdi ky T^ > t > T, dien tfch vet k h i Idn, luc q u i n tfnh trd nen nhd v i xuat hien sU c i n bang hai life ma s i t nhdt va luc Do do, b i n kinh vet dau dupc tinh theo cdng thufc sau: Md hinh: R{0 = kJgrQ^t'r-" ^ I I >• I ' vi B(t) = k2,\grA^i^'^r^^'^\ Trong dd: u^, v^: Cic phan van tdc tren tang mat smh bdi gio; 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