THE SMOOTH SOUNDING GRAPH. A Manual for Field Work ... - BGR
THE SMOOTH SOUNDING GRAPH. A Manual for Field Work ... - BGR THE SMOOTH SOUNDING GRAPH. A Manual for Field Work ... - BGR
Fig25 Fig.26 33 Fig.24
L/2 a/2 1,5 6,28 2 11,8 2,5 18,9 34 Table of K-factors 0,5 1 2 2,5 5 10 20 25 50 3 27,5 12,6 4 49,5 23,6 5 77,7 37,7 6 112 55,0 25,1 (7,5) 176 86,8 41,0 31,4 8 200 990 47,1 36,3 10 313 155 75,4 58,9 12 452 225 110 86,5 (12,5) 490 244 120 94,2 15 706 352 174 137 62,8 20 126 627 311 247 118 25 196 980 488 389 189 30 383 141 704 562 275 126 40 503 251 125 100 495 236 50 785 392 196 157 777 377 60 113 565 282 226 112 550 251 (75) 177 883 441 353 176 868 410 314 80 201 100 502 402 200 990 471 363 100 314 157 785 628 313 155 754 589 120 452 226 113 904 452 225 110 865 (125) 491 245 123 981 490 244 120 942 150 707 353 177 141 706 352 174 137 628 200 628 314 251 126 627 311 247 118 250 982 491 393 196 980 488 389 189 300 141 707 565 283 141 704 562 275 400 126 100 503 251 125 100 495 500 196 157 785 392 196 157 777 600 283 226 113 565 282 226 112 800 503 402 201 100 502 402 200 1000 785 628 314 157 785 628 313
- Page 1 and 2: THE SMOOTH SOUNDING GRAPH A Manual
- Page 3 and 4: Preface 2 This manual shall be a pr
- Page 5 and 6: 1. Basic rules 4 The first chapter
- Page 7 and 8: This current density is marked as j
- Page 9 and 10: 8 Fig.2 Fig.3 Fig.4 Fig.5
- Page 11 and 12: 10 1.3. The four-electrode arrangem
- Page 13 and 14: 12 Fig.6 Fig.7 Fig.8
- Page 15 and 16: 14 If we compare equations (10) and
- Page 17 and 18: Case 2 (Fig. 10) 16 Now we observe
- Page 19 and 20: 1.5. The fundamental principle for
- Page 21 and 22: Case 3 (Fig.14) 20 The electrode di
- Page 23 and 24: with just the same factor K. 22 Aft
- Page 25 and 26: 24 Fig17 layers with different resi
- Page 27 and 28: 26 Simulating this zooming by enlar
- Page 29 and 30: 28 1.6. Shifting of potential elect
- Page 31 and 32: 30 Fig.21 Fig.22 Fig23
- Page 33: 32 2.1. How to carry out a field me
- Page 37 and 38: 36 Fig.27 Fig.28 Before we start th
- Page 39 and 40: 38 fence, ditch) especially, if the
- Page 41 and 42: 40 by experience. The measurement i
- Page 43 and 44: 42 2.2. Possible errors influencing
- Page 45 and 46: 2.2.4. Crossing a ditch (Fig.26/29)
- Page 47 and 48: 46 accuracy is not so important the
- Page 49 and 50: 2.2.8. Insulation and leakage curre
- Page 51 and 52: 50 Fig.31. They are ascending with
- Page 53 and 54: 52 If j' is negative, i.e. the dist
L/2<br />
a/2<br />
1,5 6,28<br />
2 11,8<br />
2,5 18,9<br />
34<br />
Table of K-factors<br />
0,5 1 2 2,5 5 10 20 25 50<br />
3 27,5 12,6<br />
4 49,5 23,6<br />
5 77,7 37,7<br />
6 112 55,0 25,1<br />
(7,5) 176 86,8 41,0 31,4<br />
8 200 990 47,1 36,3<br />
10 313 155 75,4 58,9<br />
12 452 225 110 86,5<br />
(12,5) 490 244 120 94,2<br />
15 706 352 174 137 62,8<br />
20 126 627 311 247 118<br />
25 196 980 488 389 189<br />
30 383 141 704 562 275 126<br />
40 503 251 125 100 495 236<br />
50 785 392 196 157 777 377<br />
60 113 565 282 226 112 550 251<br />
(75) 177 883 441 353 176 868 410 314<br />
80 201 100 502 402 200 990 471 363<br />
100 314 157 785 628 313 155 754 589<br />
120 452 226 113 904 452 225 110 865<br />
(125) 491 245 123 981 490 244 120 942<br />
150 707 353 177 141 706 352 174 137 628<br />
200 628 314 251 126 627 311 247 118<br />
250 982 491 393 196 980 488 389 189<br />
300 141 707 565 283 141 704 562 275<br />
400 126 100 503 251 125 100 495<br />
500 196 157 785 392 196 157 777<br />
600 283 226 113 565 282 226 112<br />
800 503 402 201 100 502 402 200<br />
1000 785 628 314 157 785 628 313
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