Accession Number : ADA259028


Title :   Identification of Piping and Sapping Erosion of Streambanks


Descriptive Note : Final rept.


Corporate Author : SVILLE UNIV KY DEPT OF CIVIL ENGINEERING


Personal Author(s) : Hagerty, D J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259028.pdf


Report Date : Sep 1992


Pagination or Media Count : 86


Abstract : The objective of this study was to investigate the erosion of river- and stream-banks by exfiltrating seepage, referred to as piping and sapping. This mechanism is widespread in occurrence and is a significant factor in bank stability, but it is often overlooked. The mechanism is complex and acts in concert with other bank erosion processes. Operation of those other processes often masks the processes and products of piping/sapping. Failures caused by piping/sapping may occur during periods of stream inactivity long after storm or flood events have ended. The piping/sapping process is described in detail, and the conditions necessary for piping/sapping to occur are discussed. A procedure to determine whether or not piping/sapping is operating at an erosional bank site is presented, along with guidance on filter use to prevent or remediate streambank erosion caused by piping/sapping.


Descriptors :   *BANKS(WATERWAYS) , *SOIL EROSION , *SOIL STABILIZATION , STABILITY , WATER FLOW , IDENTIFICATION , EROSION , SEDIMENT TRANSPORT , STREAMS , WATER EROSION , SEEPAGE , FLOOD CONTROL , MASKS , FAILURE(MECHANICS) , SOILS , STORMS , FILTERS , RIVERS , FLOODS


Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering


Distribution Statement : APPROVED FOR PUBLIC RELEASE