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https://hdl.handle.net/11681/22883| Title: | Embankment pore pressures during construction |
| Authors: | Clough, G. Wayne. Snyder, Joseph W. |
| Keywords: | Hydrostatic pressure Embankments |
| Publisher: | U.S. Army Engineer Waterways Experiment Station. Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Technical report;3-722 |
| Abstract: | Abstract: The purpose of this study was to summarize observed pore pressure data from CE darns and published data from other agencies on methods of predicting and determining the development of pore water pressure in earth darns. A summary of theoretical methods for predicting pore pressures is included to assist in the interpretation of the selected data. Construction characteristics and pore pressure data from 10 CE dams, 2Lt USBR dams, and 9 foreign dams are summarized and compared in an effort to draw conclusions on construction pore pressures in earth darns. This study determined that because of the numerous factors which influence pore pressure buildup, broad conclusions for all earth dams are very difficult to make and each dam must be treated individually with respect to predicting construction pore pressures. Conclusions indicated as a result of this study are: (a) Provisions for internal drainage effectively relieve construction pore pressures in earth embankments. (b) Pore pressure ratios in embankment materials increase rapidly as placement water content increases, especially above optimum water content. (c) Pore pressures increase with increasing dam height, but even low dams can develop large pore pressures. It is recommended that piezometer installations and data recording be standardized to facilitate obtaining useful information for further understanding of the factors affecting pore pressure development. A selected bibliography of pore pressure literature is included. Appendix A is a tabulation of CE division office responses to the data requests for this study. Appendix B presents sketches of' different piezometer tips used in dams included in this study. |
| Description: | Technical Report |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/22883 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| WES Technical Report No 3-722.pdf | 3.28 MB | Adobe PDF |  View/Open |