A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | German |
| Veröffentlicht: |
Göttingen
Anst. für Bodenkunde
1979
|
| Schriftenreihe: | Göttinger bodenkundliche Berichte
57 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | IX, 104 S. graph.Darst. |
Internformat
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| 245 | 1 | 0 | |a A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range |c Oliver A. Opara-Nadi |
| 264 | 1 | |a Göttingen |b Anst. für Bodenkunde |c 1979 | |
| 300 | |a IX, 104 S. |b graph.Darst. | ||
| 336 | |b txt |2 rdacontent | ||
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| 490 | 1 | |a Göttinger bodenkundliche Berichte |v 57 | |
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| 650 | 0 | 7 | |a Boden |0 (DE-588)4007348-8 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Messung |0 (DE-588)4038852-9 |2 gnd |9 rswk-swf |
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Datensatz im Suchindex
| _version_ | 1804116754480234496 |
|---|---|
| adam_text | CONTENTS
PAGE NO.
Important symbols
List of figures
List of tables
1. Introduction....................................... 1
2. Theory of the Methods.............................. 5
3. Review of Literature............................... 14
3.1. Methods based on steady-state flows....... 14
3.2. Transient or unsteady-state flow methods.. 15
3.2.1. Measurement of the hydraulic conductivity. 15
3.2.2. Measurement of the diffusivity............ 15
3.3. Instantaneous profile method for hydrau-
lic conductivity determination............ 16
4. Materials and Methods.............................. 18
4.1. Research Methodic......................... 18
4.2. Profile description....................... 19
4.3. Soil sampling techniques.................. 21
4.3.1. Short metal cylinder samples.............. 21
4.3.2. Samples in 3O cm long acrylic glass
cylinders................................. 22
4.3.3. Synthetic coated soil monoliths........... 23
4.4. Soil-moisture characteristic.............. 25
4.5. Use of artificial quartz powder as a
contact material.......................... 29
II
PAGE NO.
4.6. Laboratory methods....................... 30
4.6.1. Evaporation method....................... 30
4.6.2. Outflow methods.........................• 34
4.6.2.1. Short column - small increment version— 34
4.6.2.2. Long column - small increment version.... 38
4.6.2.3. Short column - large increment version
(one-step method)......... 43
4.6.3. Steady-state methods..................... 44
4.6.3.1. Short column version..................... 44
4.6.3.2. Long column version...................... 46
4.7. Field method............................. 47
4.7.1. Measurement of soil water content........ 48
4.7.1.1. Neutron method___....................... 48
4.7.1.2. Gravimetric moisture determination....... 49
4.7.2. Measurement of hydraulic head............ 49
4.7.3. Method of data analysis.................. 49
Results and Discussion............................ 51
5.1. General concept.......................... 51
5.2. Results of the different laboratory
methods.................................. 51
5.2.1. Evaporation method....................... 51
5.2.2. Outflow method: Short column - small
increment version........ 59
5.2.3. Outflow method: Long column - small
increment version........ 64
5.2.4. Outflow method: Short column - large
increment version
(one-step method)........ 68
5.2.5. Steady-state method: Short column version 70
5.2.6. Steady-state method: Long column version. 75
5.3. Results by field method.................. 7 6
Ill
PAGE NO.
5.4. Comparison of methods.................... 79
5.4.1. Same methods applied to different soils.. 79
5.4.2. Different methods applied to the same
soil..................................... 81
5.5. Closing remarks.......................... 91
6. Summary........................................... 95
7. Literature........................................ 99
Acknowledgements
Curriculum vitae
|
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| id | DE-604.BV002294448 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T15:43:32Z |
| institution | BVB |
| language | German |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-001507847 |
| oclc_num | 264185136 |
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| owner_facet | DE-355 DE-BY-UBR DE-824 DE-703 DE-20 DE-M49 DE-BY-TUM |
| physical | IX, 104 S. graph.Darst. |
| publishDate | 1979 |
| publishDateSearch | 1979 |
| publishDateSort | 1979 |
| publisher | Anst. für Bodenkunde |
| record_format | marc |
| series | Göttinger bodenkundliche Berichte |
| series2 | Göttinger bodenkundliche Berichte |
| spelling | Opara-Nadi, Oliver A. Verfasser aut A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range Oliver A. Opara-Nadi Göttingen Anst. für Bodenkunde 1979 IX, 104 S. graph.Darst. txt rdacontent n rdamedia nc rdacarrier Göttinger bodenkundliche Berichte 57 Wasserdurchlässigkeit (DE-588)4189190-9 gnd rswk-swf Boden (DE-588)4007348-8 gnd rswk-swf Messung (DE-588)4038852-9 gnd rswk-swf Vergleich (DE-588)4187713-5 gnd rswk-swf Wasserdurchlässigkeit (DE-588)4189190-9 s Boden (DE-588)4007348-8 s Messung (DE-588)4038852-9 s Vergleich (DE-588)4187713-5 s DE-604 Göttinger bodenkundliche Berichte 57 (DE-604)BV006091279 57 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001507847&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Opara-Nadi, Oliver A. A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range Göttinger bodenkundliche Berichte Wasserdurchlässigkeit (DE-588)4189190-9 gnd Boden (DE-588)4007348-8 gnd Messung (DE-588)4038852-9 gnd Vergleich (DE-588)4187713-5 gnd |
| subject_GND | (DE-588)4189190-9 (DE-588)4007348-8 (DE-588)4038852-9 (DE-588)4187713-5 |
| title | A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range |
| title_auth | A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range |
| title_exact_search | A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range |
| title_full | A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range Oliver A. Opara-Nadi |
| title_fullStr | A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range Oliver A. Opara-Nadi |
| title_full_unstemmed | A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range Oliver A. Opara-Nadi |
| title_short | A comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range |
| title_sort | a comparison of some methods for determining the hydraulic conductivity of unsaturated soils in the low suction range |
| topic | Wasserdurchlässigkeit (DE-588)4189190-9 gnd Boden (DE-588)4007348-8 gnd Messung (DE-588)4038852-9 gnd Vergleich (DE-588)4187713-5 gnd |
| topic_facet | Wasserdurchlässigkeit Boden Messung Vergleich |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001507847&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV006091279 |
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