Abstract
Embankments are structures that are used especially for water storage, energy production, and irrigation. The type of embankment depends on the purpose of storm water to be used such as detention and retention, ground water recharge, surface water harvesting, flood control etc. and the available soil material for construction. Broadly, two type of embankment can be assumed, namely, homogenous embankment and zoned embankment. In this study, seepage through an earthen embankment’s body is investigated using analytical and computer approach. Seepage is investigated since seepage both in the embankment’s body and under the foundation adversely affects embankment’s stability. This study specifically investigated seepage in embankment’s body. Mahananda embankment is a homogeneous earthen embankment built on the impervious foundation. In the line of the purpose of this research, the seepage rate in an earthen embankment is estimated by Geo-Studio software (SEEP/W). Soil parameters such as soil type, Atterberg limits, moisture content (w) and unit weight of soil (γ), hydraulic conductivity (k) have been determined using field and lab experiments. Dimensional analysis was used with helping of the theoretical results to develop an empirical equation in order to determine the quantity of seepage through homogenous earthen embankment without filter resting on impervious base. Also, Verify the SEEP/W results with an artificial model and compare with analytical methods.
Highlights
An embankment is an artificial barrier usually constructed along a stream channel to hold the back water
Obtained laboratory test data of embankment soil were used to build artificial section of embankment to measure the seepage rate and analyzed by Geo-studio software. In this project the seepage analysis is done in two ways (i) Analytical approach (ii) Computer approach
For using dimensional analysis theorem with the help of the SEEEP/W results, an empirical equation has developed for determine the quantity of seepage through homogenous earthen embankment without filter resting on impervious base
Summary
An embankment is an artificial barrier usually constructed along a stream channel to hold the back water. Embankments should have a drain or other waterwithdrawal facility for control the water level and to lower or drain the lake for normal maintenance and emergency purposes. Embankments are constructed especially for water supply, flood control, irrigation, energy production, recreation, etc. Two type of embankment can be assumed, namely, homogenous embankment and zoned embankment. This study is an investigation about seepage through the earth embankment. An embankment, constructed primarily of compacted earth, either homogeneous or zoned, and containing more than 50% of earth. According to the materials located in the body of embankment, there is a seepage through the embankment’s body. Seepage can occur under the embankment foundation, too. Seepage through the embankment’s body was investigated
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