FIELD CROSSHOLE DATA REPORT Crosshole Sismic Tests at the Vogtle Test Fill- Phase I for MACTEC, Engineering and Consulting, Inc. 396 Plasters Ave. Atlanta, GA 30324 by Kenneth H. Stokoe, II, Ph.D., P.E. Min-Jae Jung, M.S., Graduate Research Assistant Jiabei Yuan, M.S., Graduate Research Assistant Februrary 22, 2008 Geotechnical Engineering Report GR08-0? Geotechnical Engineering Center Civil Engineering Department The University of Texas at Austin DeN: GR08-07 Revision 0, Februrary 22, 2008 Page 1 of 86 Page 458 of 546
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FIELD CROSSHOLE DATA REPORT Crosshole Sismic Tests at the ... · APPENDIX C: Compression-wave Travel Time Records from Crosshole Seismic Testing Between Source Borehole CHB-2 and
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FIELD CROSSHOLE DATA REPORT
Crosshole Sismic Tests at the Vogtle Test Fill- Phase I
for
MACTEC, Engineering and Consulting, Inc.396 Plasters Ave.
Atlanta, GA 30324
by
Kenneth H. Stokoe, II, Ph.D., P.E.Min-Jae Jung, M.S., Graduate Research AssistantJiabei Yuan, M.S., Graduate Research Assistant
Februrary 22, 2008
Geotechnical Engineering Report GR08-0?Geotechnical Engineering Center
Civil Engineering DepartmentThe University of Texas at Austin
DeN: GR08-07Revision 0, Februrary 22, 2008
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TABLE OF CONTENTS
TABLE OF CONTENTS 2
1. Overview 3
APPENDIX A: Compression- and Shear-wave Velovities Profiles 4
APPENDIX B: Shear-wave Travel Time Records from Crosshole Seismic
Testing Between Source Borehole CHB-2 and Receiver
Boreholes CHB-l and CHB-3 (Depth Range: 2 to 10 ft) 19
APPENDIX C: Compression-wave Travel Time Records from Crosshole
Seismic Testing Between Source Borehole CHB-2 and Receiver
Boreholes CHB-l and CHB-3 (Depth Range: 2 to 10ft) 27
APPENDIX D: Shear-wave Travel Time Records from Crosshole Seismic
Testing Between Source Borehole CHB-3 and Receiver
Boreholes CHB-l and CHB-2 (Depth Range: 6 to 38 ft) 35
APPENDIX E: Compression-wave Travel Time Records from Crosshole
Seismic Testing Between Source Borehole CHB-3 and Receiver
Boreholes CHB-l and CHB-2 (Depth Range: 6 to 38 ft) 55
APPENDIX F: Calibraition and Procedures and Documentation 75
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FIELD CROSSHOLE DATA REPORT
Crosshole Seismic Tests at the Vogtle Test Fill- Phase I
by
Kenneth H. Stokoe, II, Ph.D., P.E.Min-Jae Jung, M.S., Graduate Research AssistantJiabei Yuan, M.S., Graduate Research Assistant
The University of Texas at Austin
1. Overview
All data that were collected during the crosshole seismics tests at the VogtleTest Fill - Phase I are presented in this summary. Appendix A contains the sketchshowing the locations of the boreholes used in the crosshole tests and the resultingcompression- and shear-wave velocities in both graphical and tabular forms.Appendices B through E contain the recorded waveforms for given source-to-receiver and receiver-to-receiver travel paths for a given wave type. In eachappendix, the waveforms are first shown as waterfall plots and then as individuallyexpanded records of the 3-component geophone at each test depth. Wave arrivals areidentified in each waveform by solid dots, "e", that have been added to the records.
Appendices B through E contain the following results:
(1) Appendix B: direct shear wave measurements using the source inBorehole CHB-2 over depths of2 to 10 ft.
(2) Appendix C: direct compression wave measurements using the sourcein Borehole CHB-2 over depths of 2 to 10ft.
(3) Appendix D: direct and interval shear wave measurements using thesource in Borehole CHB-3 over depths of 6 to 38 ft.
(4) Appendix E: direct and interval compression wave measurements usingthe source in Borehole CHB-3 over depths of 6 to 38 ft
Appendix F contains the calibration documentation including field evaluationsof the trigger calibration and recorder timing calibration.
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APPENDIX A
Compression- and Shear-wave Velocities Profiles
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1< 20 ft
5ft
>1 "'N
t
10 ft
10 ft
F
r------- ---I :
Den~te~ Centers of S~S~ Test:A~rays A through Gi
< 5 ft >1 !j~ I !~_5_ft_~:Ai ~B:
@-- '0' r"IIIIIIIII
DII
'l~m" '
E!.~... .~, .••~ , . ~ .• '•..@--
i
30 ft
30 ftPrimary Area ofSASW Testing
7ft
<7ft
>
'Outline of Footprint on the Natural Soil of the Test Fill
Figure 1 Locations of Crosshole Boreholes Relative to the SASW Test Arrays A through G on the
Footprint of the Test Fill
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8384 Boring Location Plan - North(Shallow)
8382 t8380 CHB-1
Receiver 2 ...8378
8376
Direct8374 Travel
q::: Pathbll 8372 CHB-2s:::2
Source 1 •......'-0Z
8370DirectTravel
8368 Path
8366
CHB-3 •8364 Receiver
8362
8360
6972 6973 6974 6975 6976Easting, ft
Figure 2 Locations of Crosshole Boreholes on the Footprint of the Test Fill (Depth Range: 2 to 10
ft)
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8384
8382
8380
Boring Location Plan(Deep)
- North
tCHB-1
Receiver 2 ~ ,
DirectTravelPath
DirectTravelPath
8378
8376
8374q::bi)p 8372:.a..........0Z
8370
8368
8366
8364
8362
8360
6972
CHB-2Receiver 1
CHB-3Source
6973
•
IntervalTravelPath
.. ""-..
•
6974
Easting, ft
6975 6976
Figure 3 Locations of Crosshole Boreholes on the Footprint ofthe Test Fill (Depth Range: 6 to 38
ft)
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3000
@
2500
Notes:@NO identifiable S-wave
arrival at Receiver 2
@HigherVp likely due tnearly saturated soil.
Deep (Depth = 6 to 38 ft)Source (CHB-3)
Receiver I (CHB-2)Receiver 2 (CHB-I)
-+- Source to Receiver 1... Source to Receiver 2....... Receiver 1 to Receiver 2
Shallow (Depth = 2 to 10 ft)Source (CHB-2)
Receiver I (CHB-3)Receiver 2 (CHB-I)
... Source to Receiver 1Source to Receiver 2
200015001000
vs ...............
500
+Natural Soil
Test Fill
0
2
4
6
8
10
12
14
¢:: 16..l::f....,0.. 18(])
0....,l::i 20(])
S(])
'"" 22;lenro(])
:8 24
26
28
30
32
34
36
38
400
P- and S-Wave Velocities, fps
Figure 4 Vs and Vp Profiles from Crosshole Seismic Testing of the Compacted Test Fill (BoreholesCHB-l ,CHB-2 and CHB-3)
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Table A.l Crosshole Seismic Wave Velocities(Vs) at Boreholes CHB-2 and CHB-3
Wave Velocities from Source Borehole CHB-2 to Receiver Borehole CHB-3Vogtle Test Fill - Phase 1
Notes:I. Path Lengths are Provided by MACTEC2. Velocity = (Corrected Path Length) / (Corrected Travel Time)3. Could Not Interpret S-wave Velocity at a Depth of32 ft.
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Table A.6 Crosshole Seismic Wave Velocities(Vp) at Boreholes CHB-2 and CHB-3
Wave Velocities from Source Borehole CHB-2 to Receiver Borehole CHB-3Vogtle Test Fill - Phase 1
Calibration Time Travel Time in Grouting(ms) (ms)
-0.282 0.067
P-Wave
Meas.Path Length]
Corrected Path Measured Conected TravelVelocity4Depth Length2 Travel Time Time3
Figure B.l Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-2 and Receiver Borehole CHB-3; Full Record Length and2- to 10-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
Analyzed by :
Checked by
M:",JN.. JC/~1:
£a~Date o J.. - 0 6 - ).Qolb
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-2 -,-------------------------------,
I • denotes Arrival TimeI
-- Upward Impact-- Downward Impact
0.0250.0200.0150.010
I Trigger
o
-1
2
3
4<t::.;3" 50..
(1)
06
7
8
9
10
11
120.000 0.005
Time, sec
Figure B.2 Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-2 and Receiver Borehole CHB-I; Full Record Length and2- to IO-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
Analyzed by :
Checked by :
Date
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-1 --y--------------------------------,
I Depth : 2 ft I - Upward Impact..... Downward Impact
o Source... , [Borehole CHB-2]
~ ~ ..
, .· .·.·.'.
...........................................•
Receiver 1 (Vertical)[Borehole CHB-3]
V,
-....
.....
,.,.
......• • ,.........:A..~__~_---,
... " Receiver 2 (Vertical)[Borehole CHB-1]
. .
I
.,'
...._.., ' ,. , , !'.2
0.000 0.005 0.010 0.Ql5 0.020 0.025
Time, sec
Figure B.3 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of2 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-1 and CHB-3
Analyzed
Checked try :
Date
.-!Y:., 1r:~.I,:'!J::_ ..;e::a SI1;6-'c/t
:J.. ~ 0 5 - J-tJoCb
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-1 ---,----------------------------,
IDepth : 4 ft I - Upward Impact..... Downward Impact
o .. Source....................................... [Borehole CHB-2] .
Figure BA Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of4 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-1 and CHB-3
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-1 -,-----------------------------,
IDepth : 6 ft I - Upward Impact..... Downward Impact
,: Receiver 2 (Vertical)[Borehole CHB-1]
Iv, .... ,,'',-
Source•................. [Borehole CHB-2]
"
, .. .:~:'
o
0.000 0.005 0.010 0.015 0.020 0.025
Time, sec
Figure B.5 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of6 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-l and CHB-3
IDepth : 8 ft I - Upward Impact..... Downward Impact
" ..-'.,\Y., ;, ', :
\H,"
Receiver 1 (Vertical)[Borehole CHB-3]
'V'. '. ., :. ..... '
Receiver 2 (Vertical)[Borehole CHB-1]
Source'. ..p " [Borehole CHB-2] .. ,'~"
~ '.'
, '..'.:'
, ,, ......
.............................~
2
0.000 0.005 0.010 0.Ql5 0.020 0.025
Time, sec
Figure B.6 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of8 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-l and CHB-3
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-1 --r-----------------------------,
I Depth : 10ft I - Upward Impact.... - Downward Impact
o
2
•... -.
· .· .· .· .·.~.,'
Source.,: [Borehole CHB-2j ... .
~ ~ -,
'-.
,/""'l .... -'"
~---<----"-----, "Receiver 2 (Vertical)
[Borehole CHB-1]
V\........
0.000 0.005 0.010 0.015
Time, sec
0.020 0.025
Figure B.7 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of10 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-l and CHB-3
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APPENDIXC
Compression-Wave Travel Time Records from Crosshole Seismic TestingBetween Source Borehole CHB-2 and
Receiver Boreholes CHB-l and CHB-3(Depth Range: 2 to 10ft)
Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-2 and Receiver Borehole CHB-3; Full Record Length and2- to 10-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-2 and Receiver Borehole CHB-l; Full Record Length and2- to lO-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
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Analyzed by :
Checked by :
Date () J,.. - 0 6 - ).oof(;,
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-1 ---r-----------------------------.,IDepth: 2 ft I 1- Downward Impactl
v
Source[Borehole CHB-2]
Receiver 1 (Horizontal)[Borehole CHB-3]
Receiver 2 (Horizontal)[Borehole CHB-1]
o
0.000 0.005 0.010 0.015 0.020 0.025
Time, sec
Figure C.3 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 2 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-l and CHB-3
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-1 --,------------------------------,
I Depth : 4 ft I 1- Downward Impactl
v -
v
v
A f\
Receiver 1 (Horizontal)[Borehole CHB-3]
Receiver 2 (Horizontal)[Borehole CHB-1]
Source---_--I [Borehole CHB-2]
2
a
0.000 0.005 0.010 0.015 0.020 0.025
Time, sec
Figure CA Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 4 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-l and CHB-3
Analyzed by : Mr", Ji'f- ;r(/~
Chec'ked by :-~2:fZs~~Date CJ :J.. ~ 0 6 - 2-00'0
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-1 ---,----------------------------,
IDepth : 6 ft I 1- Downward Impactl
o Source[Borehole CHB-2]
Receiver 1 (Horizontal)[Borehole CHB-3]v V V
Receiver 2 (Horizontal)[Borehole CHB-1]vV
0.000 0.005 0.010 0.015
Time, sec
0.020 0.025
Figure C.S Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 6 £1; Source Borehole CHB-2 and Receiver Boreholes CHB-1 and CHB-3
Figure C.6 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 8 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-I and CHB-3
Figure C.7 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 10 ft; Source Borehole CHB-2 and Receiver Boreholes CHB-1 and CHB-3
Figure D.l Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-3 and Receiver Borehole CHB-2; Full Record Length and6- to 38-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
Figure 0.2 Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-3 and Receiver Borehole CHB-I; Full Record Length and6- to 38-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
Analyzed by :
Checked by :
Date
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-1 .......---------------------------,
I Depth : 6 ft I - Upward Impact..... Downward Impact
Figure D.3 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of6 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
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-1 --.---------------------------,
I Depth : 8 ft I - Upward Impact..... Downward Impact
Figure D.4 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of8 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure D.S Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 10ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Analyzed by' M:,.,Jre. ]vn;::Chec'ked by : '2-:i:"5/r;~itDate CJ :t - 0 5 - ).oOtp
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-1 --,.-------------------------------,
I Depth : 12 ft I - Upward Impact....• Downward Impact
Figure D.6 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 12 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
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-1 -,------------------------------,
IDepth : 14 ft I - Upward Impact..... Downward Impact
Figure D.7 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 14 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-1 and CHB-2
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-1 -,------------------------------,
I Depth : 16 ft I - Upward Impact..... Downward Impact
Figure D.8 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 16 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-1 and CHB-2
Figure D.9 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 18 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure D.lO Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 20 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
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-1 ----.----------------------------,
IDepth : 22 ft I - Upward Impact..... Downward Impact
Figure D.II Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 22 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-I and CHB-2
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-1 --,-------------------------------,
IDepth: 24 ft I - Upward Impact00000 Downward Impact
Figure D.12 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 24 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure D.l3 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 26 ft; Source Borehole CHB-3 and Receiver Boreho]es CHB-l and CHB-2
Analvzed by ; Mt""fte. j'v#:Ch(\c'ked by : ~?71-'~~itDate :t- 06-
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-1 -,--------------------------------,
IDepth : 28 ft I - Upward Impact... -. Downward Impact
Figure D.14 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 28 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-1 and CHB-2
Figure D.15 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 30 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
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-1 -,------------------------------,
I Depth : 32 ft I - Upward Impact..... Downward Impact
Figure D.16 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 32 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
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-1 ---,-------------------------------,
IDepth : 34 ft I - Upward Impact..... Downward Impact
Figure 0.17 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 34 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-1 and CHB-2
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-1 --.----------------------------,
I Depth : 36 ft I - Upward Impact..... Downward Impact
Figure D.18 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 36 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure D.19 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depthof 38 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Analyzed by : __ MrY1J~ .. Z~F~Checked by: £ d ~itDate CJ J- ~ 0 6 - :2!Joep
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APPENDIXE
Compression-Wave Travel Time Records from Crosshole Seismic TestingBetween Source Borehole CHB-3 and
Receiver Boreholes CHB-l and CHB-2(Depth Range: 6 to 38 ft)
Figure E.l Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-3 and Receiver Borehole CHB-2; Full Record Length and6- to 38-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
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Analyzed by :
Checked by :
Date oJ.. - 0 6 - 2-Ootb
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I --Downward ImpactITrigger-4---..-------------------------------,-2
Figure E.2 Waterfall Plot of Shear-Wave Travel Time Records for Measurements BetweenSource Borehole CHB-3 and Receiver Borehole CHB-l; Full Record Length and6- to 38-ft Depth Range (Note: Arrivals Picked on Individually Expanded Records)
Figure £.3 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of6 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure EA Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of8 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure E.5 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of10 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure £.6 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of12 £1; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure E.7 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of14 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-1 and CHB-2
Analvzed by ; ;!1f..,Jr,e. }/'ff:-Chec'k¢d try :-;t~··sk~
Figure E.8 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of16 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure E.9 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of18 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure E.l 0 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of20 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-1 and CHB-2
Figure E.1l Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of22 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
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-1 -,------------------------------,
IDepth : 24 ft I 1- Downward Impactl
o Source.--../-..".........----------1[Borehole CHB-3]
Figure E.12 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of24 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure E.13 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of26 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure E.14 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of28 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure £.15 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of30 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Analyzed by ; __Jljt0 JA<:.....Zt::'!J::__Checked by : ~tl ~'f:itDate 0 t - 0 6 J-rJol'b
Figure E.16 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of32 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Figure E.17 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of34 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-I and CHB-2
Figure E.18 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of36 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
Analvzed by : M:...., fte., 5(/~
Che:ked by : -?7l--ShNDate 0 .1. ~ 0 b - MJO?/;;
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-1 --r-----------------------------,
I Depth : 38 ft I 1- Downward Impactl
o Source~--....-......,--.------------I [Borehole CHB-3]
Figure E.19 Individual Crosshole Record of Trigger and 3-Component Receiver at a Depth of38 ft; Source Borehole CHB-3 and Receiver Boreholes CHB-l and CHB-2
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APPENDIXF
Calibration Procedures and Documentation
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F.l Source/Receiver Calibration
The mechanical source and 3-D receivers were calibrated in the field to determine the time
between the triggering of the geophone or accelerometer on the source and the initiation of seismic
energy around the borehole casing. The delay time, or the calibration factor, is subtracted from the
direct time measured in the source-to-receiver tests.
The general in-field source and receiver calibration procedure is illustrated in Figure F.l.
The source is placed in a piece of casing, the same type used in the crosshole boreholes and a 3-D
receiver is securely pressed against the casing at the same elevation. The casing is approximately 3
ft (~1 m) long. The source is then impacted and the response of the trigger geophone or
accelerometer and the vertical and horizontal receiver geophones are simultaneously monitored on
the dynamic signal analyzer.
Two 3-D receivers were used in the crosshole testing. Calibration of the source and receiver
was performed in the field following the same procedure discussed above. The dynamic signal
analyzer was used to record the output signals.
Figure F.2 shows the records collected from this calibration procedure using the trigger
geophone and receiver. Figure F.2a shows the calibration time records for upward impacts and
Figure F.2b shows the calibration time records for downward impacts. In these figures, the top
record shows the output of the source trigger; the second record shows the output of the vertical
geophone, and the lower two records show the output of the two horizontal geophones. Results of
the calibration of the source and the receiver performed in the field are presented in Table F.l.
DeN: GR08-07Revision 0, Februrary 22, 2008
Page 76 of 86
Page 533 of 546
118-1n. OoatedWire Rope
Source Acceleromet:er---tr.---.I
PVC Casing .~---""+;1
Locking Wedge ---...
Ground Surtace
~\
""',••--- RecordingEquipment
MeasuringTape
3~D
...-----Geophone
... Hose Clamp
........11I---- Hose Clamp
Figure F.l Illustration ofField Calibration of Seismic Source and Receivers Used in CrossholeTests.
Figure F.2 Calibration Travel Time Records for Receiver UT2005-CH03 for CrossholeTesting; (a) calibration record for upward impact, (b) calibration record fordownward impact; Janunary 25, 2008
Department ofCivil, Architectural and Environmental Engineering • EC] 4.21 University Station C1700 • Austin, Texas 78712-0273 • (512) 471-4921 • FAX (512) 471-0592
20 March 2008
Mr. Wm. Allen LancasterMACTEC Engineering and Consulting, Inc.396 Plasters AvenueAtlanta, Georgia 30324
RE: Field Crosshole Data ReportDCN: GR08-07Revision 0, February 22, 2008Vogtle Units 3 & 4 ProjectMACTEC Project No. 6141060286
Dear Mr. Lancaster:
The University of Texas at Austin/Kenneth H. Stokoe, II, Ph.D. issued theField Crosshole Data Report, DCN GR08-07 for inclusion as Attachment Eto MACTEC Engineering and Testing, Inc's Data Report, Vogtle Units 3 & 4Engineered Fill Below Grade Test Pad Phase 1.
The Field Crosshole Data Report was prepared by and reviewed by Min JaeJung and Kenneth H. Stokoe, II. During preparation of the report in MSWord format, electronic copies of signature blocks were placed on 71 of the86 pages of the report to document the analysis and review of the data onthe individual pages. Three separate electronic signature blocks were usedin the report as follows:
The signature block dated 02-06-2008 was placed on 63 pages, the blockdated 01-25-2008 was placed on two pages and the block dated 12-12-2007was place on six pages of the report.
Page 544 of 546
This letter is written to certify that all data contained in DeN GROB-07 hasbeen analyzed by Min Jae Jung and checked by Kenneth H, Stokoe, II. Theelectronic data stamps placed into the report are true representations of thedocumentation of the analysis and review of the data contained in thisreport~
Kenneth H. Stokoe, II, Ph. OJ P.E.Jennie C. and Milton T. Graves Chair