Xây dựng kế hoạch sơ tán sóng thần cho khu vực đô thị thành phố nha trang sử dụng công nghệ GIS

PHUONG PHAP VA CONG CV THVC HIEN Trong nghien cim nay, ky thuat phan tich da tieu chuan Muhi-criteria analysis va cdng nghe GIS duge ap dung de xay dung ke hoaeh so tan sdng thin eho mg

XAY DlTNG KE HOACH SO TAN SONG T H A N CHO KHU VlTC

DO THI THANH P H 6 NHA TRANG SLT DUNG CONG NGHE GIS

Nguyen Hong Phtrffng' Vu Ha Phl^^yng^ Pham The Truyen'

E-mails: phuong.dongdat@,email.eom ptt502(a),gmail.com haphuong303@gmail.com

' Vien Vdt ly Dia cau, Vien Khoa hgc vd Cdng nghe Viet Nam,

^Khoa Khi tucmg thiiy vdn vd Hdi duang hgc, tnrdng Dgi hgc Khoa hgc tu nhien

Tom tat:

Theo cdc nghien ciru gdn day, do cd vj tri khd dgc thii, viing bd bien Viet

Nam cd nhiiu khd ndng phdi chju su tdc dgng chu yeu tir cdc viing nguon sdng

thdn ndm ben trong khu vuc Bien Ddng, trong dd viing n^on Mdng bien

Manila Bac duac coi la vUng ngudn sdng thdn nguy hiem nhdt doi v&i bd bien Viet Nam Ket qud tinh thdi gian lan truyen sdng thdn cho thdy sau khi phdt

sinh tren viing ngudn Mdng bien Manila, song thdn chi mdt khodng 2 gia dong

hd de tdn cong vdo ba bien Vi$t Nam Vi vay, vi^c sa tdn ddn ngay sau khi

nhdn dugc thong bdo sdng thdn Id mgt trong nhieng cong viec phdi dirac iru tien hdng ddu tgi cdc khu virc bj sdng thdn de dga Trong thuc te, viec to chirc

sa tdn duac tinh tir liic ijhgn duac thdng bdo tdi thai diem song thdn dp tai la mgt khodng thai gian rdt ngdn Cdc ke hoach sa tdn sdng thdn von la mgt phdn

cua cdng tdc irng pho bao gdm viec xdy dung cdc bdn do sa tdn vd cdc kich

bdn cu the, thudng dugrc lap trudc tgi cdc dia phuang bi sdng thdn de dga nhdm ddm bdo su sdn sdng ciia cgng ddng vd cdng tdc sa tdn dug'c thuc hien

nhanh khi cd sir co

Trong bdi bdo ndy, ke hoach sa tdn song thdn duac xdy dung vd dp dung thir

nghiem cho mgt khu vuc do thi ven bien cua thdnh pho Nha Trang Cong nghe

GIS vd ky thuat phdn tich da tieu chudn du^c sir dying de xdc dinh cdc khu vuc

sa tdn vd cdc dia diem trii dn khi cd sdng thdn Cdc kit qud duac trinh bdy du&i dgng tap bdn do vi tri sa tdn a hai cdp do khdn cdp vd mot kich bdn sa tdn vai cdc huang ddn vd gidi thich cu the

Cdc kit qud trinh bdy trong bdi bdo ndy cd the coi la nhirng budc ddu tien trong nd luc xdy dung mgt quy trinh chudn hoa vd chi tiit cho viec lap ki

hoach sa tdn ddn khoi hiem hga sdng thdn tgi Viet Nam Mo hinh co the dugc hodn thiin vd nhdn rgng ra di dp dun^ cho cdc khu vice ddn cu tren todn ddi ven biin Viet Nam trong tuang lai Di phuc vit cho y tuang ndy, bdi bdo dira

ra mgt logt cdc kiin nghi cho viic lap ke hoach vd dp dung trong th&i gian tai

DEVELOPMENT OF A TSUNAMI EVACUATION PLAN

FOR URBAN AREAS OF NHA TRANG CITY USING GIS

Abstract:

In this paper, a tsunami evacuation plan was developed for a coastal urban area of the Nha Trang city GIS technology and multi-criteria analysis technique were used for delineating evacuation zones and shelters in case of tsunami The results are presented in terms of a set of evacuation maps at two levels of emergency and a evacuation scenarios with detad guidance and explanation

L MdDAU Sdng than la dang thien tai nguy hiem cd the gay ra nhihig thiet hai mang tinh buy diet cho nhan loai Nhiing tran sdng than buy diet ngay cang xuat hien vdi tin suit cao hon hong nhimg nam gan day nhu : tran dgng dit cd do ldn Mw= 9.0 gSy sdng thin a An Do Duong ngay 25 thang 12 nam 2004 (khoang 300 000 ngudi chit), h?in dgng dit cd dg lijn M„= 9.0 gay sdng thin d ddng dao Hon Su, Nhat Ban ngay 11 thang 3 nam 2011 (khoang

20 000 ngudi chit) cho thay nhQng thiet hai njng nl nhit do sdng thin gay ra chii ylu tap trung d nhiimg khu vuc dan cu hay cac do thj nam hen dai ven bien

Theo cac nghien cum gan day, do cd vj tri kha dac thu, vung ba bien Viet Nam cd nhieu kha nang phaii chju su tac dgng chu yen tir cac vimg nguon sdng than nam ben trong khu v\rc Bien Dong, trong dd viing nguon Mang bien Manila Bac dugc coi la vung nguon sdng than nguy hiem nhat doi vgi bd bien Viet Nam Ket qua tinh thdi gian Ian truyen sdng than cho thay sau khi phat sinh tren viing ngudn Mang bien Manila, song than chi mat khoang 2

gid ddng hd dl tan cong vao bd bien Viet Nam [I] Vi vay, vi?c so tan dan ngay sau khi

nhan dugc thong bao sdng thin la mgt trong nhihig cong vi$c phai dugc tm tien hang dau tai cac khu vvrc bi song thin de dga Trong thvrc te, vifc td chiic so tan dugc tinh tir Iiic nhan dugc thdng bao tdi thdi dilm sdng than ap tdi la mgt khoang thoi gian rit ngln Cac

kl hoach so tan sdng than vdn la mgt phin cua cong tac iing pho, bao gom vi?c xay d\mg cac ban dd so tan va cac kjch ban cu thi, thudng dugc lap hudc tai cac dia phuang bi sdng

thin de dpa nhim dam bao sif sin sang cua cgng ddng va cong tac so tan dugc thvc hi$n nhanh khi cd s\f c6

Trong bai bao nay, kl hoach so tan song thin dugc xay d\mg va ap dung thii nghi?m cho mgt khu vyc do thj ven biin cua thanh phd Nha Trang Cong nghg GIS va ky thuat phan tich da tieu chuin dugc sur dung dl xac djnh cac khu v\ic sa tan va cac dia dilm tni

an khi co sdng thin Cac kit qua dugc hinh bay dudi dang tap ban do vj tri sa tan d hai cap

do khin cip va mgt kich ban so tan vdi cac hudng din va giai thich c\i the

II CAC DU LIEU DAU VAO

1 Khu vuc nghien cihi

Khu vuc dd thi ven biin cua thanh phd Nha Trang duge lira chgn lam khu vuc nghien cuu vdi li phudng, dan so 163.885 ngudi va dien tich lit 7.9 km (Hinh 1) Day la khu phat hiin du Ijch, nai tap hung ddng dan cu, nha cira, cac co quan dau nao nen khi sdng than xay ra khu vuc nhay cam nay cd nguy co thiet hat ldn nhat

)U Oa Chdng

hon Cau hon Dung

NHATRANG

ShaTmns; '

•p Vinh %uv4n _Hd« TRE '"- J 482 I

BR

•s PhuticDBng

Hinh 1 Vi tri khu vuc nghien ciru trin bdn do thdnh pho Nha Trang (mdu do)

2 Ctf sd dir lieu

Cac dii lieu thude tinh duac su dung bao gdm hai loai chinh la dii lieu ve dan sd va du lieu v6 nha eira, trong dd cae dir lieu ve dan sd duac khai thae tu eae nien giam thdng ke

Sd heu dan sd chi tiet tdi cap phudng duge liet ke trong bang 7 [2]

STT

1

2

3

4

5

6

7

8

9

10

11

Bang 1.' Ddn so vd dien tich cdc ph

Ten Phuong

VTnh Phudc

VTnh Tho

Van Thang

Xuong Huan

Phuang Sai

Phuac Tan

Phudrc Tien

Phudc Hda

Tan Lap

Loc Tho

Van Thanh

uong khu vuc nghien cim ndm 2009

Dan so (ngudi)

20.662 14.823 13.012 17.873 13.284 13.103 12.680 14.461 16.242 12.861 14.884

Dien tich (kin2)

1,09

"" 1,3

0,28 0,61 0,29 0,48 0,3 1,12 0,59 1,47 0,37

De khao sat va thu thap cac dit lieu thugc tinh ve nha eua, cdng tac thuc dja dugc td chuc quy md tai khu vuc dd thj sat bd bien thanh phd Nha Trang Cae can bg khao sat da tien hanh khao sat cac cdng trinh xay dung tren loan bg eae khu phd, cac ngo phd, cac cum dan cu tren dja ban theo mau phieu dieu tra da lap s5n Cac dir lieu thugc tinh vl nha cira duge ndi kel vdi cac dii lieu khdng gian ve nha cira, dugc sd hda tir anh nin Google d ty le 1:2000 Ngoai cac dii lieu ve dan sd va nha ciia, dir lieu md hinh sd do cao (DEM) khu vuc Nha Trang cung dugc khai thac tir ngudn www.gebeo.net

Tren eo sd cac dir lieu thu thap dugc, mgt co sd du lieu GIS duge thanh lap tren mdi tmdng eua phiin mem Arc View GIS Ngoai cac dir lieu diu vao dugc luu trii dudi dang cac

ban dd chuyen de va ban dd nen, co sd dir lieu GIS cdn luu trii ca cac ban dd kit qua [3]

III PHUONG PHAP VA CONG CV THVC HIEN

Trong nghien cim nay, ky thuat phan tich da tieu chuan (Muhi-criteria analysis) va cdng nghe GIS duge ap dung de xay dung ke hoaeh so tan sdng thin eho mgt khu vuc do thi ven bien nam trong vdng anh huang eiia sdng than Quy trinh xay dung kl hoach so tan sdng than bao gdm cae budc sau :

1 Xac dinh eac tieu chi lira chgn eac khu vuc so tan sdng than

2 Thanh lap tap ban do cac khu vuc so tan sdng than vdi cap do khan cap khac nhau

3 Xay dung cac kich ban so tan sdng than chi tiet

Ky thuat phan tich da tieu chuan da dugc ap dung kha rdng rai trong cae qua trinh ra quyet djnh, vdi ngi dung chinh bao gom viec xac djnh cac muc tieu can dat va phan tich to

hgp cac tieu chuan khac nhau de dua ra phucmg an tdi uu cho quyet dinh cudi cung [4f

Cln day, ky thuat phan tich da tieu chuan da dugc ap dimg de danh gia nguy co bj tdn thuang do sdng thin cho mgt khu vuc dd thj cua thanh pho Nha Trang nam tren dai ven

biin miln Trung f2J Trpng bai nay, ky thuat phan tich da tieu chuin dugc ap dung de xay

dung cac tieu chi lira chgn dja dilm ijimg lam ngi tni an khan cap cho ngudi dan khi cd sdng than tan cdng

Cdng nghe He thdng tin dja ly (hay cdn ggi la GIS) vdi nhitng chiic nang xii Iy va quan

ly dd hga manh, cho phep hien thj cac kit qua tren man hinh may tinh mgt each linh hoat

va tien lgi Nggai ra, cac chiic nang lap trinh cua GIS cdn cho phep tao ra cac ting dung phin mem manh va nhilu chiic nang hen mdi truomg Windows, cho phep ngudi sii dung cap nhat va chinh sita dO lieu, xay d\mg va thu nghiem nhiing md hinh phiic tap mgt each

cd hi?u qua Trong cong trinh nay, cong nghe GIS dugc ap dung de xay dirng xay d\tng co

sd dii lieu, cac ban dd phan bd cac dja dilm va cac khu vuc so tan sdng than d cac cap do • khin cip khac nhau va hiin thj cac Ig frinh so tan theo kjch ban

IV XAY DlfNG CAC TIEU CHI LlTA CHQN DIA Dl£M SO TAN SONG THAN

Theo cac kit qua tinh toan cho cac kjch ban sdng than tren Bien Dong, dgng dat cudng

do 8,3 do Richter xay ra d khu vuc ranh nude sau Manila co the tao nen sdng than cao 2,1

Thdi gian sdng thin di hr vung ranh nuac sau Manila tdi vung bien Nha Trang la khoang 2

tieng ddng hd [5]

Dua vao thdi gian lan truyin cua sdng thin tir ngudn phat sinh den khu yitc nghien ciru, hai mirc do khin cip sau day dugc lira chgn lam eg sd cho viijc xay dung ke hoach so tan:

• d p do I: Cho phep di tan dan trong thdi gian: t < 0.5 h

c i p do 2: Cho phep di tan dan trong thai gian: 0.5 h < t < 2 h

Can cir vao hai mirc do khin cip da xac dinh tren day, cac dja diem so tan sdng than cung dugc phan thanh hai loai Ddi vdi cap do 1, do thdi gian so tan chi cho phep thuc hi?n trong vdng 30 phut, nen dia dilm so tan dugc lira chgn la cac Ida nha cao tang cd kcl ciiu bin virng ngay sat bd biin nim trong khu vuc nghien ciru D6i vdi cap do 2, do thdi gian

so tan dai ban, cd thi len din mgt tiing ruoi ddng hd, nen cac khu vuc so tan duge ehgn ed ihl nim sau hon trong dit liin vdi dilu kien la phai cd dja hinh du cao de tranh dugc lac dgng cua sdng than

1 Xiiy dung ticu chi lua chon dja diem s» tan song than cap do 1

Theo gia thiit tit kjch ban tinh sin, do cao sdng than ldn nhit cd the xay ra a Nha Trang

la 5 m (tuang duong do cao nha 2 ting) va khi sdng thin xay ra thi khu vuc nam sat bd la noi cd mirc do tdn thuang cao nhat De xay dung tieu chi lira chgn dja diem so tan sdng thin cip do 1, loan bd khu vuc nghien ciiu dugc chia thanh ba ddi chay song song vdi bd biin va dugc danh sd theo thu tu tit phia bien vao dit hen bao ddi 1, ddi 2 va ddi 3 Mitc

do tdn thuong giam diin kht cang tien sau vao dat lien

Sir dung ky thuat phan tich da tieu ehuan dua tren mtic do ton thuong ket cau, so tang cua cac ngoi nha va mirc dg tdn thuang theo khoang each, tieu chi xay dyng ban dd cac dia

diem so tan sdng than cap do 1 dugc xac dinh nhu sau [2]-

a) Trong ddi 1, cac khdi nha dugc lira chgn lam dja diem tni an theo cac tieu chi sau:

• Ket cau be tdng gia co

• Sd ting: s > 3

• Nam trong ddi each ba bien < 500 m

b) Trong ddi 2, cac khdi nha dugc lira chgn lam dja diem tni an theo cac tieu chi sau:

• Ket cau be tong gia cd

• Sd tang: s > 2

• Nam trong ddi each bd bien tir 500 m den 1000 m

c) Trong ddi 3, cac khdi nha dugc lira chgn lam dja diem tni an theo cac tieu chi sau:

• Ket cau be tdng gia cd, gach gia cd va gach

• Sd tang: s > 2

• Nam trong ddi each bd bien > 1000 m

2 Xay dung tieu chi lira chgn dia dilm sir tan song thin cap do 2

Tren the gidi da timg ghi nhan song thin cd do cao tdi 30 m xay ra d ngoai khoi Tay Bac Sumatra, tai viing bien An Do Duong Do khu vuc nghien cim co dja hinh tuong doi bang phang, vcji do cao trung binh la 3m, nen cac khu vuc so tan cho truang hcrp cip do 2 phai dugc lua chgn sao cho ngudi dan cd the cd d i thai gian din noi so tan an toan

Tren ea sd cua nhung lap luan neu tren, tieu chi lira chpn eac khu vue sa tan sdng than d cap dp 2 duac xac dinh la cac khu vuc cd dp cao dia hinh tren 30 m va nam trong vdng ban kinh nhd hon 10 km quanh khu vuc nghien cuu

V THANH LAP TAP BAN DO CAC KHU VU'C SO TAN SONG THAN Cac ban dd khu vue sa tan sdng than duac xay dimg tren mdi trudng eua phan mem Arcview, su dung cac cdng cu ngam dinh cua phan mem nay Dudi day md ta eac quy trinh thanh lap cac ban dd sa tan sdng than d ea hai miic dp khan cap

1 Xay dung ban do sor tan sdng than c4p do 1

Ban do so tan sdng than cap dp 1 duac xay dung theo cac tieu chi de ra trong mue IV 1 Ranh gidi eua ba ddi hep nam dpc theo bd bien dupe vach ra tren ban dd vdi eac dia diem tru an khan cap dupe xae dinh la eac tda nha cao tang cd ket cau viing ehac, cd dii siic chdng dd nhirng dot tan cdng eua tran sdng than Tren mdi tnrdng cua phan mem Arcview, ban dd cac khu vuc sa tan sdng than cap dp 1 dupe xay dung theo cac budc sau:

Bu&c 1: edng cu sd hda dupe su dimg de xac dinh ranh gidi cac ddi Zone 1, Zone 2 va Zone 3:

• Zone 1: Ranh gidi la dudng bd bien va dudng song song vdi bd bien va each bd bien khoang L < 500 m

• Zone 2 la ddi tiep giap vdi Zone I va nam trong khoang tu 500 m den 1000 m so vdi bd bien

• Zone 3 la ddi cd khoang each vdi bd bien >1000 m

Budc 2: cdng cu tao lap tra van dupe su dung de tim cac khdi nha thda man cac di^u

ki|n a), b) va c) md ta trong muc IV.! d tren

Bu&c 3: Su dung phep chpn ddi tupng theme tren theme (Select by Theme) de ehpn cac

ddi tupng cd mdi quan he khdng gian xac dinh so vdi cac ddi tupng khac 6 day ddi tupng dupe chpn la cac khdi nha nam hoan toan trong tung ddi theo mdi quan he khdng gian

« Are Completely Within »

Tren hinh 1 minh hpa ban dd so tan sdng thin e4p dp 1 dupe xay dung theo phuang phap md ta d tren Tren ban do nay the hien cac khdi nha dii dieu kien dupe chpn lam dia di^m dd ngudi dan cd the chay tdi tru an trong vdng dudi 30 phut trudc khi sdng than tin cdng

Nhihig khdi nha mau dd nam trong ddi nguy hiem nhat, dd la nhirng khdi nha cd k^t ciu

be tdng gia cd va cd sd tang > 3 tang Ket qua cd 118 khdi nha da duac chpn lam nai tru in dam bao an toan

Nhung khdi nha mau vang nam trong ddi it nguy hiem han, cd ket eau be tdng gia co va

sd tang > 2 tang Cd 348 khdi nha thda man tieu chi nay

Ddi it nguy hidm nhit cd 481 khdi nha mlu xanh dupe chpn la nhiing khdi nha cd kit cau be tdng gia cd, gach hoac gach gia cd va sd tang > 2 ting

Hinh 3 Bdn do cdc khu vuc sa tdn song thdn cdp do 2

2 Xay dung ban 36 sff tan sdng thin cap do 2

Ban dd eac khu vuc sa tan sdng than cap dp 2 bieu thi nhirng khu vuc cd do cao thda man tieu chi (H > 30m) va quanh khu vuc nghien cuu ban kinh 10 km de ngudi dan se sa

tan den dd nin thdi gian sa tan cho phep tu 0.5 - 2h Tren mdi trudng cua phan mem

Arcview, ban dd cac khu vuc sa tan sdng than cap dp 2 duoc xay dung theo cac bude sau:

Budc J: vec ta hda cac sd lieu dja hinh tu sd lieu md hinh sd do cao (DEM)

Budc 2- cdng cu phan tich khdng gian Spatial Analy.st dupe su dung de ve cac dudng

ddng muc do cao va cac mat dang dp cao cho khu virc nghien cuu Sau dd cac cdng cu

Geoprocessing va Grid Analyst dupe su dung de cat cac dudng ddng muc va mat dang do

cao tren theo ban dd nen eua Nha Trang

Bu&c 3 : edng cu tao lap tra van dupe su dung xac dinh cac khu vue ed dia hinh cao hon

30 m va nam trong pham vi 10 km tinh tu trung tam khu vyc nghien cuu

Tren hinh 3 minh hpa ban dd cac khu vuc so tan sdng than cap dp 2 dupe xay dung theo quy trinh md ta d tren Tren ban dd ed the thay cd ba khu vue thda man cac tieu ehi de ra trong muc IV.2, cd dia hinh cao (ddi, nui) xung quanh khu vuc nghien cuu cd the duoc su dung lam nai so tan an toan cho ngudi dan trudc khi sdng than tan cdng khoang tir 30 phiit den mdt tieng rudi ddng hd

VI XAY Dl]*NG CAC KICH BAN SO TAN SONG THAN CHI TIET

Dua tren eac ban dd so tan sdng than, ke hoach so tan dupe xay dung cho khu vuc nghien cuu dudi dang cac cac kich ban sa tan sdng than cu the Npi dung cua cac kich ban nay bao gdm viec xac dinh vi tri cac dia diem tni an va eac khu vue sa tan khi cd sdng than, md ta Id trinh sa tan va cac hudng dan cu the nham giiip cho ngudi dan den dupe noi

sa tan kip thdi va an toan nhit Do han cha v§ mat thdi gian, trong nghien cuu nay chi minh hpa mdt kich ban sa tan diSn hinh, hudng din cho ngudi bd hanh va cac phuang tien

ca gidi dgn nai sa tan la viing Niii San - VTnh Phudc (khu vuc 1 trong ban dd so tan cip dp 2) thep cae Id trinh toi uu Kich ban nay cimg dupe coi nhu la mdt md hinh de cd the ap d\ing cho cac khu vuc dd thi khac cd kha nang bi sdng thin de dpa tren toan dai ven biin Viet nam

1 Hudng dan v6 cac tinh huong khan cap

Cap dg 1: Khi cd sdng thin xay ra, ngudi dan nhan dupe thdng bao di tan, hay tim

nhirng dia didm hoac cac tda nha cao ting, ben virng (cd trong ban dd cac khu vuc sa tan cip dp 1) da dupe dat biSn bao va hudng dan de tni an

Cdp do 2: Khi nhan dupe thdng bao cd sdng thin sSp xay ra, ngudi dan nhanh chdng

tim nhung vimg dit cao (doi, nui) quanh khu vuc minh dang d, thdi gian di tan cho phep tir 0.5 - 2 h Nhirng nai dd da dupe thiet ke s5n trong ban dd sa tan, di theo cac bien hieu chi din dd den dupe khu vue an toan

2 Hirdng dan ve id trinh sc tan

Ld trinh so tan dupe hudng dan cho ngudi bd hanh va cac phuang tien ca gidi den noi

so tan da dupe xac djnh ia Nui San - VTnh Phudc Tren Id trinh nay phai dupe cam hoac treo cac bien chi dan vdi npi dung de hicu ddi vdi ca ngudi dan dia phuang lan khach du lich Quang trudng 2 thang 4 la dia diem ndi tieng nen dupe chpn lam noi xuat phat de so tan dan

Diem xudt phdt: Quang trudng 2 thang 4, Tran Phii, Nha Trang

Diem den: Nui San, VTnh Phudc, Nha Trang

A Hu&ng ddn duang ldi xe den Ndi Sgn Tuyen du&ng duac gai y: Duang 2 thdng 4

Khoang each: 5.3 km

Thdigian: 10 phut

Hinh 4 Sa do 16 trinh sa tdn theo phuang dn ldi xe chon Duong 2 thdng 4

Chi duong lai xe diln Nui San theo Du-6'ng 2 thang 4

1 Di ve hirdng BJc len Tran Phu vc phia Lc Thanh Tdn

2 RC- triii thir 3 len Le Thanh Tdn

3 Tai chd dudnit vdng, di theo ldi ra thir 2 len Quamt Trung

4 Tai chd dudn.u vdng, di theo ldi ra thii 2 len Dirdnir 2 thang 4

5 Tiep tuc len Cau Xdm Bdng

6, Re triii vc hudng Dudng vao sudi khoang ndng

7 Ri; trai tai Dudng vao sudi khoang ndng

8 Re phai dau tii}n Ien Dudng Itin Nui San

9 Re trai tai Duong Van Nga/Dudng len Niii San

Chieu dai (m) 210m

600 m

750 m 1,9 km

600 m

450 m 12m

600 m

220 m

B Chi duang di bg den Nui Sgn Tuyen dir&ng dugc ggi y: Trdn Phu

Khoang each: 4.9 km

Thdi gian: 1 gid 2 phiit

Chi dud'ng di bg dijn Nui San theo dudng Trin Phu

1 Di ve hudng Bic len Tran Phu ve phia Lc Thanh Tdn

2 Ticp tuc len Ciiu Tran Phu B

3 Re trai len Thap Ba

4 Re phai len Dudng 2 thang 4

5 Re trai ve hudng Dudng vao sudt khoang ndng

6 Ri; trai len Dudng vao sudi khoang ndng

7 Re phai len Dudng len Nui San

8 Re trai len Duong Van Nga/Dudng len Nui San

Chieu diii (m)

2300

650

500

160

450

12

600

220