Bilag 5: Bestemmelse af hydraulisk ledningsevne, Miljøstyrelsen

MTBE's spredning i grundvand

Bilag 5
Bestemmelse af hydraulisk ledningsevne

A Slugtests

B Pumpetest

C Kornkurver

D Sammenstilling af data

Bilag 5A Slugtests

De tilsatte vandmængder er angivet i nedenstående tabel:

Boring (filter)	Tilsat vandmængde (liter)	Boring (filter)	Tilsat vandmængde (liter)
B1	13,28	B6	12,78
B2-1	13,48	B7-1	14,04
B2-2	13,57	B7-2	12,36
B3	13,39	B8	11,85
B4	13,21	B9	11,76
B5	13,21

Hvorslevs løsningsmetode forudsætter at magasinets horisontale og vertikale udstrækning er uendelig, hvorfor magasindybden ikke får betydning i beregningerne. Benyttes Bouwer-Rice's løsningsmetode ses det, at den hydrauliske ledningsevne varierer med den angivne magasindybde. Som udgangspunkt er angivet en magasindybde på 3 meter for at simulere en primært horisontal strømning. Som alternativ er ledningsevnen også beregnet for en magasintykkelse på 7 meter, og det ses at ledningsevnen falder med stigende magasindybde. Det vurderes, at en magasintykkelse på 3 m bedst svarer til den aktuelle afledningshorisont for det tilførte vand.

De beregnede ledningsevner varierer mellem de to metoder, men der ses ingen tendens i, at den ene metode beregner højere værdier end den anden. Jo mere entydige dataene er, jo tættere ligger værdierne for de to metoder. Nedenfor ses de beregnede ledningsevner beregnet ud fra de to metoder for de to omtalte magasintykkelser.

Boring		Løsning
Boring		Hvorslev	Bouwer-Rice
B1	D=4m	5.553x10^-5	4.464 x 10^-5
B1	D=15m	-	3.913 x 10^-5
B2,2	D=3m	3.309 x 10^-4	2.299 x 10^-4
B2,2	D=7m	-	2.218 x 10^-4
B2,1	D=3m	3.531 x 10^-4	3.757 x 10^-4
B2,1	D=7m	-	3.089 x 10^-4
B3	D=3m	7.817 x 10^-5	7.67 x 10^-5
B3	D=7m	-	5.99 x 10^-5
B4	D=3m	3.075 x 10^-5	3.053 x 10^-5
	D=3m	6.528 x 10^-5 *
	D=7m	-	2.88 x 10^-5
B5	D=3m	1.361 x 10^-4	1.361 x 10^-4
	D=3m	2.031 x 10^-4 *
	D=7m	-	1.477 x 10^-4
B6	D=3m	5.628 x 10^-6	5.628 x 10^-6
	D=3m	2.324 x 10^-5 *
	D=7m	-	4.359 x 10^-6
B7,2	D=3m	1.508 x 10^-5	1.508 x 10^-5
B7,2	D=7m	-	1.205 x 10^-5
B7,1	D=3m	2.14 x 10^-5	2.503 x 10^-5
B7,1	D=7m	-	2.503 x 10^-5
B8	D=3m	7.558 x 10^-5	7.558 x 10^-5
B8	D=7m	-	7.321 x 10^-5
B9	D=3m	9,14 x 10^-4	9.464 x 10^-4
B9	D=7m	-	7.549 x 10^-4

*Alternativ tilpasning på et tidligt tidspunkt på kurven.

En alternativ løsning er medtaget, i de tilfælde hvor kurven har et "knæk", og der tydeligt er to hældninger på kurven. De alternative løsninger repræsenterer alle et tidligt tidspunkt i forsøgene, og som det ses har de en højere hydraulisk ledningsevne. De alternative ledningsevner kunne skyldes en hurtigere udsivning gennem gruskastningen omkring boringerne.

^{Se her!
Slugtest





Well test
analysis

Data Set: I:\SAG\01\713.00\AQT\b1.aqt

Date: 10/05/01
Time: 13:36:43

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B1

Test Date: 09/11/01

Aquifer Data

Saturated Thickness: 4. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B1)

Initial Displacement: 7.35 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.15 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 5.553E-05 m/sec
Solution Method: Hvorslev

y0 = 3.131 m



Well test
analysis

Data Set: I:\SAG\01\713.00\AQT\b1bouwer.aqt

Date: 10/05/01
Time: 13:37:18

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81,Særslev

Test Well: B1

Test Date: 09/11/01

Aquifer Data

Saturated Thickness: 4. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B1)

Initial Displacement: 7.35 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.15 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 4.464E-05 m/sec
Solution Method: Bouwer-Rice

y0 = 3.325 m



Well test
analysis

Data Set: I:\SAG\01\713.00\AQT\b2,2_hvorslev.aqt

Date: 10/05/01
Time: 14:00:35

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B2,2

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B2,2)

Initial Displacement: 7.56 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 1.94 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.0003309 m/sec
Solution Method: Hvorslev

y0 = 4.159 m



B2,2

Data Set: I:\SAG\01\713.00\AQT\b2,2.aqt

Date: 10/05/01
Time: 14:00:16

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B2,2

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B2,2)

Initial Displacement: 7.56 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 1.94 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.0002299 m/sec
Solution Method: Bouwer-Rice

y0 = 4.093 m



Well test
analysis

Data Set:
I:\SAG\01\713.00\AQT\b2,1.aqt

Date: 10/05/01
Time: 13:37:53

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B2,1

Test Date: 09/11/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B2,1)

Initial Displacement: 7.54 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 6.46 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.0003531 m/sec
Solution Method: Hvorslev

y0 = 6.216 m



Well test
analysis

Data Set: I:\SAG\01
\713.00\AQT\b2,1bouwer.aqt

Date: 10/05/01
Time: 13:37:32

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B2,1

Test Date: 09/11/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B2,1)

Initial Displacement: 7.54 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 6.46 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.0003757 m/sec
Solution Method: Bouwer-Rice

y0 = 6.216 m

^{Well test
analysis

Data Set: I:\SAG\01
\713.00\AQT\b3.aqt

Date: 10/05/01
Time: 13:34:31

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B3

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B3)

Initial Displacement: 7.46 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.54 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 7.817E-05 m/sec
Solution Method: Hvorslev

y0 = 2.119 m



B3

Data Set: I:\SAG\01
\713.00\AQT\b3bouwer.aqt

Date: 10/05/01
Time: 13:34:38

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B3

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B3)

Initial Displacement: 7.46 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.54 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 7.67E-05 m/sec
Solution Method: Bouwer-Rice

y0 = 2.537 m



B4

Data Set: I:\SAG\01\713.00\AQT\b4.aqt

Date: 10/05/01
Time: 13:44:56

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B4

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3.61 m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B4)

Initial Displacement: 7.39 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.61 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 3.075E-05 m/sec
Solution Method: Hvorslev

y0 = 4.983 m



B4

Data Set: I:\SAG\01\713.00\AQT\b4bouwer.aqt

Date: 10/05/01
Time: 13:44:45

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B4

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B4)

Initial Displacement: 7.39 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.61 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 3.053E-05 m/sec
Solution Method: Bouwer-Rice

y0 = 4.983 m



B5

Data Set: I:\SAG\01\713.00\AQT\b5.aqt

Date: 10/05/01
Time: 13:46:58

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B5

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B5)

Initial Displacement: 7.4 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.6 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.0001361 m/sec
Solution Method: Hvorslev

y0 = 1.678 m



B5

Data Set: I:\SAG\01\713.00\AQT\b5bouwer.aqt

Date: 10/05/01
Time: 14:03:32

Projekt information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B5

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B5)

Initial Displacement: 7.4 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 3.6 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.0001361 m/sec
Solution Method: Bouwer-Rice

y0 = 1.792 m



B6

Data Set: I:\SAG\01\713.00\AQT\b6.aqt

Date: 10/05/01
Time: 13:47:41

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B6

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B6)

Initial Displacement: 7.19 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.81 m

Wellbore Radius: 0.0672 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 5.628E-06 m/sec
Solution Method: Hvorslev

y0 = 4.356 m



B3

Data Set: I:\SAG\01\713.00\AQT\b6.aqt

Date: 10/05/01
Time: 13:47:49

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B6

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B6)

Initial Displacement: 7.19 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.81 m

Wellbore Radius: 0.0672 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 5.628E-06 m/sec
Solution Method: Bouwer-Rice

y0 = 4.287 m



B7

Data Set: I:\SAG\01\713.00\AQT\b7.aqt

Date: 10/05/01
Time: 14:04:23

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B7,2

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B7,2)

Initial Displacement: 6.94 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.56 m

Wellbore Radius: 0.0672 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 1.508E-05 m/sec
Solution Method: Hvorslev

y0 = 5.883 m



B7

Data Set: I:\SAG\01\713.00\AQT\b7bouwer.aqt

Date: 10/05/01
Time: 14:04:39

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B7,2

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B7,2)

Initial Displacement: 6.94 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.56 m

Wellbore Radius: 0.0672 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 1.508E-05 m/sec
Solution Method: Bouwer-Rice

y0 = 5.883 m



B7,1

Data Set: I:I\SAG\01\713.00\AQT\b7,1.aqt

Date: 10/05/01
Time: 13:47:57

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B7,1

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B7,1)

Initial Displacement: 6.84 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 9.66 m

Wellbore Radius: 0.0672 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 2.141 E-05 m/sec
Solution Method: Hvorslev

y0 = 5.942 m



B7,1

Data Set:
I:\SAG\01\713.00\AQT\b7,1bouwer.aqt

Date: 10/05/01
Time: 13:48:12

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B7,1

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B7,1)

Initial Displacement: 6.84 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 9.66 m

Weilbore Radius: 0.0672 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 2.503E-05 m/sec
Solution Method: Bouwer-Rice

y0 = 5.942 m



B8

Data Set: I:\SAG\01\713.00\AQT\b8bouwer.aqt

Date: 10/05/01
Time: 13:50:07

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B8

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B8)

Initial Displacement: 6.47 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.53 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 7.558E-05 m/sec
Solution Method: Hvorslev

y0 = 4.489 m



B8

Data Set: I:\SAG\01\1713.00\AQT\b8bouwer.aqt

Date: 10/05/01
Time: 14:05:33

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B8

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B8)

Initial Displacement: 6.47 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.53 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 7.558E-05 m/sec
Solution Method: Bouwer-Rice

y0 = 4.489 m



B9

Data Set: I:\SAG\01\1713.00\AQT\b9hvorslev.aqt

Date: 10/05/01
Time: 13:56:28

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B9

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B9)

Initial Displacement: 6.48 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.52 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.000914 m/sec
Solution Method: Hvorslev

y0 = 7.896 m



B9

Data Set: I:\SAG\01\713.00\AQT\bgbouwer.aqt

Date: 10/05/01
Time: 13:50:30

Projekt
information

Company: NIRAS

Project: 01.713.11

Test Location: Vestergade 81, Særslev

Test Well: B9

Test Date: 11/09/01

Aquifer Data

Saturated Thickness: 3. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data (B9)

Initial Displacement: 6.48 m

Casing Radius: 0.024 m

Screen Length: 1. m
Water Column Height: 4.52 m

Wellbore Radius: 0.0762 m

Gravel Pack Porosity: 0.38

Solution

Aquifer Model: Confined

K = 0.0009464 m/sec
Solution Method: Bouwer-Rice

y0 = 7.767 m

Bilag 5B Pumpetest



Well test
analysis

Data Set:
I:\SAG\01\713.00\AQT\b1pumpe2.gang.aqt

Date: 10/22/01
Time: 16:32:06

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B1

Test Date: 09/18/2001

Aquifer Data

Saturated Thickness: 5. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data

Pumping Wells

Well Name
X (m)
Y (m)

B5
0
0

Observation Wells

Well Name
X (m)
Y (m)

B1
0
11

Solution

Aquifer Model: Leaky

T = 0.000231 m²/sec

r/B = 0.5093
Solution Method: Hantush-Jacob

S = 0.00236



B4

Data Set:
I:\SAG\01\713.00\AQT\b4pumpe.aqt

Date: 10/22/01
Time: 16:02:30

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B4

Test Date: 09/18/2001

Aquifer Data

Saturated Thickness: 5. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data

Pumping Wells

Well Name
X (m)
Y (m)

B5
0
0

Observation Wells

Well Name
X (m)
Y (m)

B4
0
16

Solution

Aquifer Model: Leaky

T = 0.001308 m²/sec

r/B = 1.E-05
Solution Method: Hantush-Jacob

S = 0.004553



B6

Data Set:
I:\SAG\01\713.00\AQT\b6pumpe.aqt

Date: 10/22/01
Time: 16:03:25

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B6

Test Date: 09/18/2001

Aquifer Data

Saturated Thickness: 5. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data

Pumping Wells

Well Name
X (m)
Y (m)

B5
0
0

Observation Wells

Well Name
X (m)
Y (m)

B6
0
25.5

Solution

Aquifer Model: Leaky

T = 1.E-05 m²/sec

r/B = 2.541
Solution Method: Hantush-Jacob

S = 0.0002379



B7

Data Set:
I:\SAG\01\713.00\AQT\b7pumpe.aqt

Date: 10/22/01
Time: 16:03:56

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B7

Test Date: 09/18/2001

Aquifer Data

Saturated Thickness: 5. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data

Pumping Wells

Well Name
X (m)
Y (m)

B5
0
0

Observation Wells

Well Name
X (m)
Y (m)

B7
0
34.5

Solution

Aquifer Model: Leaky

T = 9.301E-05 m²/sec

r/B = 1.961
Solution Method: Hantush-Jacob

S = 0.0005458



B5

Data Set:
I:\SAG\01\713.00\AQT\b5pumpe.aqt

Date: 10/22/01
Time: 09:42:58

Projekt
information

Company: NIRAS

Project: 01.713.00

Test Location: Vestergade 81, Særslev

Test Well: B6

Test Date: 09/18/2001

Aquifer Data

Saturated Thickness: 5. m
Anisotropy Ratio (Kz/Kr): 1.

Well Data

Pumping Wells

Well Name
X (m)
Y (m)

B5
0
0

Observation Wells

Well Name
X (m)
Y (m)

B5
0
10

Solution

Aquifer Model: Leaky

T = 0.0008147 m²/sec

r/B = 0.1004
Solution Method: Hantush-Jacob

S = 0.0222

Bilag 5C Bestemmelse af hydraulisk ledningsevne. Estimering ud fra
kornkurver.
Den hydrauliske ledningsevne er bestemt ud fra sigtekurver af jordprøver udtaget i
forskellige dybder, i et antal af boringerne. Ledningsevnen er bestemt ud fra fire
forskellige løsningsmetoder med forskellige forudsætninger. Nedenfor ses de
grundlæggende ligninger for de fire løsningsmetoder.
De fire løsningsmetoder er alle bygget op om den samme basisligning.

Hvor:
K = Hydraulisk ledningsevne [m/s]

g = tyngdeaccelerationen [m/s²]

v = den kinematiske viskositet for vand [m²/s]

C= dimensionsløs jordmatrice parameter[-]

j(n) = funktion for porøsiteten [-]

d_e² = effektiv korndiameter [m²]

e = porøsiteten [-]

h = uensformighedstallet d₁₀/d₆₀ [-]

g_i = vægtprocenten af en given fraktion di

d_i^x =henholdsvis den øvre og nedre diameter for fraktionen.
For de tre løsningsmetoder har parametrene i basisligningen følgende værdier:

Metode
C
j(n)
d_e
Forudsætninger

Hazen
6 x 10^-4
1+10(e-0,26)
d₁₀
0.01mm< d_e<3mm, h<5

Slichter
1 x 10^-2
e^3,287
d₁₀
0.01mm<d_e<5mm

Krüger
4.35 x 10^-5
e/(1-e)2
1/d_e=SDg_i(2/(
d_i^g+d_i⁹))
h>5

Beyer
6 x 10^-4log(500/h)
1
d₁₀
0,06mm<d_e<0.6 mm. 1<h<5

De beregnede ledningsevner fra de fire metoder samt et gennemsnit er sammenfattet i
nedenstående tabel.
Se her!


Bilag 5D Sammenstilling af data.

Boring
Lithologi
Dybde, m.u.t.
Slugtests
Pumpetest
Kornkurver, gennemsnit
Gennemsnit

B1
ML/groft, gruset sand
8,5-10,5
4,5 - 5,6×10^-5
4,6×10^-5

4,9×10^-5

B2-2
MS, ml-grov
8,5-9,5
2,3 - 3,3×
10^-4

28×10^-5

B2
Sand, groft, gruset
11

28,5×10^-5
28,5×10^-5

B2
Sand, fint, velsorteret
12

1,1×10^-5
1,1×10^-5

B2
Sand, fin-grov
13

5,5×10^-5
5,5×10^-5

B2-1
Sand, groft, gruset
13-14
3,5 - 3,8 ×10^-4

16,5×10^-5
30×10^-5

B2
Sand, groft, gruset
15

62,5×10^-5
62,5×10^-5

B3
Sand, groft, gruset
10-11
7,7 - 7.8 ×10^-5

7,2×10^-5
7,6×10^-5

B4
MS, sv. siltet, gruset
10-11
3,1 ×10^-5
3,0×10^-4
18×10^-5
17×10^-5

B5
Sand, groft, stenet
10-11
1,4× 10^-4
1,6×10^-4
7,8×10^-5
12,6×10^-5

B6
MS, fin-ml., sv. siltet
11-12
5,6× 10^-6
2,0×10^-6
1,3×10^-5
0,7×10^-5

B7-2
Sand, fin-ml., siltet
10,5-11,5
1,5× 10^-5
1,9×10^-5
1,0×10^-5
1,5×10^-5

B7-1
Sand, gruset, leret
15,4-16,4
2,1 - 2,5×
10^-5

5,4×10^-5
3,3×10^-5

B8
MS, ml.-grov, gruset
10-11
7,6× 10^-5

7,1×10^-5
7,4×10^-5

B9
Grus, groft sand, sten
10-11
9,1 - 9,5×
10^-4

35,4×10^-5
73,8×10^-5

Hydrauliske ledningsevner (i m/s) beregnet ud fra hhv. slugtests,
pumpetest og kornkurver.

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