Ứng dụng mô hình toán số telemac 2d nghiên cứu tác động của xâm nhập mặn khu vực sài gòn – đồng nai

LÊ QUANG THANH

SƠNG SÀI GỊN

Chun ngành:
60 58 40

2014


Cán

15
tháng 01

2014

1. GVC.TS.

4. TS. N

n


LÊ QUANG THANH

MSHV: 12200455

29/06/1983

Phú Yên

Chuyên ngành:

605840

24/06/2013
21/11/2013
IV

Tp.HCM, ngày 22 tháng 01

14


,
,

,

,

.
:

,

,

K Thu t Tài Ngun

Chí Minh
.
-

Nguy n Th ng,

,

,
.

.
y cơ trong b môn K Thu
c,
các anh ch em h c viên trong l p cao h c Xây D ng Cơng Trình Th y 2012, và các
ng nghi p c a tôi trong ngành xây d
p s li u c n thi t cho
lu
M t l n n a, tôi xin g i l i c
n th y PGS. TS. Nguy n
Th ng,
c ti
ng d n tôi trong su t q trình làm lu
Tơi
xin chân thành c
h c viên trong l p cao h c Xây D ng Cơng Trình
Th
tơi hồn thành lu
Tp.H Chí Minh, ngày 22 tháng 01
H C VIÊN TH C HI N

Lê Quang Thanh

2014


L
là
T

22 tháng 01

Lê Quang Thanh

2014


ABSTRACT
Salinity intrusion is one of the major problems that the Sai Gon

Dong Nai

river is facing. It would increase in the future due to sea level rise and upstream flow
decline. In this study, salinity intrusion in Sai Gon river was simulated by using
TELEMAC2D under climate change and upstream flow reduction scenarios. The
overall objective of the thesis is to create a scientific basis for the study of the
application of information technology, the saltwater intrusion model into the
management of the existing as well as the expected irrigation system, for the purpose
of salinity prevention, environmental protection and minimize impacts caused by
saltwater intrusion. The specific objectives of the thesis are:

Research and application of Telemac2D numerical model to simulate
substance spreading problems. Specifically, the problem of saltwater intrusion in the
Sai Gon - Dong Nai basin, thereby to control salinity in the raw water pump station in
Hoa Phu (belonging to Tan Hiep water plant) and to identify the level of salt reduction
at the intake position with water discharge scenarios from Dau Tieng Lake.
To evaluate changes, the ability to push the salt of Dau Tieng Lake in the case
of climate change taking into account sea level rise.
The results are:

Saline control by discharging from Dau Tieng lake to push the salt.
With climate change scenarios and sea level rise of 0.5 m: It is effective to control
saline water at the plant but it is more difficult, time consuming and discharge in
comparison to sea level that does not rise.
With climate change scenarios and sea level rise of 1.0 meter: pushing salt for
Tan Hiep water plant will no longer be effective, it is needed to research other
solutions to reduce saltwater intrusion like tide sluices ....


T

300.000 m3
T

.

ng


cơng trình

,

:
bài tốn lan
là

,
Hịa Phú

,
.

.
:

Telemac 2D

Sài Gịn


i

................................................................................................................... vi
............................................................................................. - 1 1.1.

................................................................................................ - 1 -

1.2.

................................................................................... - 6 -

1.2.1.

....................................................................................... - 6 -

1.2.2.

....................................................................................... - 6 -

1.3.

............................................................ - 6 -

1.3.1.

............................................................................ - 6 -

1.3.2.

................................................................................ - 6 -

1.4.

........................................... - 7 -

1.5.

....................................................................... - 8 -

1.5.1.

....... - 8 -

1.5.2.

................................... - 10 -

1.6.

..................................................... - 11 -

1.6.1.

........................................................................ - 11 -

1.6.2.

.......................................................................... - 16 ............................................................................................................. - 18 SÀI GÒN ........................... - 18 -

2.1

............................................................................................... - 18 -

2.2

......................................................................... - 20 -

2.3

.................................................................................... - 20 -

2.4

................................................................. - 20 -

2.4.1

................................................................................... - 20 -

2.4.2

................................................................................. - 21 -

2.4.3

....................................................................... - 21 -


ii

2.5

..................................................................... - 24 -

2.5.1

....................................................... - 24 -

2.5.2

.......................................................... - 25 -

2.5.3

................................................................................ - 25 .......................................................................................................... - 27 .......................................................................................... - 27 -

3.1
3.1.1

-

...................................... - 27 -

........................................................ - 27 -

3.1.1.1 Mơ hình Ltank : ...................................................................................... - 27 3.1.1.2 Mơ hình NAM : ...................................................................................... - 27 3.1.1.3 Mơ hình HEC
3.1.2

HMS : .......................................................................... - 27 ...................................................................... - 27 -

3.1.2.1 Mơ hình Telemac : ................................................................................. - 27 3.1.2.2 Mơ hình VRSAP .................................................................................... - 29 3.1.2.3 Mơ hình KOD-01 và KOD-02 .............................................................. - 29 3.1.2.4 Mơ hình WENDY .................................................................................. - 30 3.1.2.5 Mơ hình HEC-RAS ................................................................................ - 30 3.1.2.6
3.1.3
3.2

................................................................................. - 30 ........................ - 32 .................................................................. - 32 -

3.2.1

................................................................ - 32 -

3.2.2

........................................................... - 34 -

3.2.3

.............................................. - 34 -

3.3

.............................. - 36 -

3.4

.......................................................................... - 38 -


iii

.......................................................................................................... - 44 ............................ - 44 ......................................................... - 44 4.1

.......................................... - 44 -

4.1.1

...................................................................................... - 44 -

4.1.2

.................................................................................... - 45 -

4.1.3

...................................................................................... - 46 -

4.1.4

.................................................................................... - 46 -

4.1.5

.......................................................... - 47 -

4.2

............................................................. - 48 -

4.2.1

............................................................................... - 48 -

4.2.2

................................................ - 49 -

4.3

............................................................................ - 54 -

4.3.1

................................................................................. - 54 -

4.3.2

................................................................................. - 54 -

CH

.......................................................................................................... - 56 .................................................... - 56 -

5.1

............... - 56 -

5.1.1

....................................................................................... - 56 -

5.1.2

................................... - 59 -

5.1.3

.................................................................................. - 60 -

5.1.4

................................................................................. - 72 -

5.4.1.1 KB2

m : .............................. - 72 -

5.4.1.2 KB2

................................ - 76 .................................................................................. - 81 -


iv

DANH SÁCH HÌNH
Hình 1.1

................................................. - 5 -

Hình 1.2

....................................................................... - 7 -

Hình 2.2

.................................. - 26 -

Hình 2.3

........................ - 26 -

Hình 3.1

Venant ........................... - 38 -

Hình 4.2

........................................................... - 44 -

Hình 4.3

.................................................................................. - 45 -

Hình 4.4

................................................................................... - 45 -

Hình 4.5

Các biên tính tốn 2D ........................................................................... - 46 -

Hình 4.6

..................................................................... - 47 -

Hình 4.7

................. - 49 -

Hình 4.8

.......................... - 50 -

Hình 4.9

............................. - 50 -

Hình 4.10

............................. - 51 -

Hình 4.11

............................. - 51 -

Hình 4.12

................... - 52 -

Hình 4.13

............................. - 52 -

Hình 5.1

.............................................................................. - 58 -

Hình 5.2

....................................................................... - 58 -

Hình 5.3

n

................................................... - 59 -

Hình 5.4

.............................................................. - 59 -

Hình 5.5

................................................ - 60 -

Hình 5.6

............................................................... - 61 -

Hình 5.7

................................................. - 61 -


v

Hình 5.8

..................... - 62 -

Hình 5.9

.......................... - 63 -

Hình 5.10

................ - 65 -

Hình 5.11

..................... - 67 -

Hình 5.12

KB1 ............................................... - 68 -

Hình 5.13

KB1 ............................................ - 70 -

Hình 5.14

KB1 ............................................. - 70 -

Hình 5.15

-KB2 -

Hình 5.16 KB2-NBD+0.5 m -

m - 72 .................................. - 73 -

Hình 5.

- KB2-

NBD+0.5m .............................................................................................................. - 75 Hình 5.18
Hình 5.19

- KB2
KB2

NBD - 1.0 m ................... - 76 -

NBD-1.0 m ............................... - 77 -


vi

................................. - 53 ................................................ - 54 ................................................ - 55 sông SG- DN .................. - 61 ............................................... - 63 .......................... - 64 ............................ - 64 - 65 ........................ - 68 .................... - 71 .................... - 71 ........................................... - 73 ............................................... - 73 .......................... - 73 ............................ - 74 ..................... - 74 - 74 . - 74 -

m )............................................................................................. - 75 -


-1-

1.1.
ơng Sài Gịn -

12,0-

-0,40 m.

-I và
-V
-VIII và cao
-I.

Sài Gịn -

-


-2-

Gòn-

-

0,5-

-

.


-3-

-25 km (trên Cát Lái 310 km).

-

chí l

,

,

-Venant 1D (d

300 nghìn m3/ ngày -

.


-4-

.
p.
-

ha cây

3

Xác
là

.L

này

1.

l
2.

, vì


-5-

Hình 1. 1

TP. HCM


-6-

1.2.
1.2.1.

:

Sài Gịn

1.2.2.

.
, phi cơng
trình

)

1.3.
1.3.1.

h

-

1.3.2.
-


-7-

Hình 1.2
1.4.

vi


-8-

. TELEMAC 2D

TELEMAC
d

1.5.
1.5.1.
a.

b.

:

:


-9-

trong vùng;

T

c.
Kênh

ng Sài
Gòn)...

d.

e.
kênh.


- 10 -

f.

1.5.2.

a.

-

nơng thơn, xây

b.

-

-

c.

khác;
Tình hình

-


- 11 -

1.6.
1.6.1.
a.

s

:

, Ts

mơ hình MIKE 11 mơ
2000