PACKER PERMEABILITY TEST IS 5529 (Part 2): 2006Project : Geotechnical Investigation for sea water intake structure for FBR 1 & 2 at BHAVINIElevation : 9.665 m. Ground Level wrt RL Bore hole No. 3Date : 5/24/2015 Depth of bore hole (m) 35.50Coordinate : N 112.00 E 100.00 Diameter of bore hole (mm) 1.5Inclination : Depth of water table (m) 9.00

Test section(m) : 28.50 To 30.00 1.65

1.5 9.00Type of test: Double Packer TestTest condition: Saturated

P t Q Lugeon k Remark

(min) (lit) (lit/min) (lit/min/m) (lit/min/m) (cm/sec)

1 0.50 1.565 10 13.80 1.380 0.920 5.879 5.879E-052 1.00 2.065 10 28.20 2.820 1.880 9.104 9.104E-053 1.50 2.565 10 41.60 4.160 2.773 10.812 1.081E-044 1.00 2.065 10 28.50 2.850 1.900 9.201 9.201E-055 0.50 1.565 10 15.50 1.550 1.033 6.603 6.603E-05

Sample Calculation :

As per IS-5529

1.565

1.38 lit/min

0.920 lit/min/m

Lugeon=Q X 1.0Mpa

= 5.879 lit/min/m

Result

Group= C

Classification: Dilation

Lugeon = 5.879

Test condition : Saturated Test condition : Unsaturated

A typical arrangement of "Double Packer" Method

1:Water inlet / pump2: Water meter

3: Pressure gauge

4: Pressure release valve

5: Drill hole t: Injection time

6: Outer packer pipe 7: Inner packer pipe k: Permeability in cm/sec

L: Length of test section8: Upper packer sleeve d: Diameter of test section (Borehole)

900 with horizontal

H1 (m)

Length of test section(L in m.) : H2 (m)

Sl. No.

Po Qt Qo

(Kg/cm2) (Kg/cm2)

P=Po+H1+H2= Kg/cm2

Qo=Qt/t =

Q=Qo/L =

Test pressure(MPa)

Po: Applied pressure / observed pressureH1: Height of pressure gauge above GL

H2: Depth of GWT or mid of test section from GL

P: Effective pressure = Po+(H1+H2)/10

Qt: Volume of water in time t

7/: Perforated inner packer pipe

8/: Lower packer sleeve

Po

Qt

Po

Qt

H1

H2

VGWT

L L

H2

H1

1

2

3

4

GL GL

5

6

12

8

8/

4

7/

7

L/2

L/2

d d

1.565

2.065

2.565

2.065

1.565

Lugeons Value

Pre

ss

ure

(K

g/c

m2

)