1887

Abstract

Summary

Dipole-dipole and Schlumberger configuration are the nondestructive geophysical method sensitive to the conductive layer in the subsurface. These methods have been conducted to detect possible patterns of the dam seepage direction. The research was conducted in the area of Bajulmati Dam, Banyuwangi, Indonesia. The Schlumberger configuration was used to detect layers vertically (sounding), conducted in an outcrop in the area of inundation (axis-dam), and Dipole-Dipole configuration was conducted in 7 lines, close to the river line. The hypothesis is if the dam is inundated, it would not be full because there is a big spring in the South East area of this dam. The research aimed to answer whether there is a leakage in the South East area of dam. The result of Schlum-berger is used as the key to interpreting of the dipole-dipole measurements. The result indicated that the sedimentation model of Bajulmati dam area trend from the southwest to the northeast. Consequently if a leak/seepage happens, it will be the same direction as the trending sediment. This is different from the previous hypothesis, believing that the seepage would trend from northwest to southeast, which is supported by the presence of a fairly large spring trending to the southeast.

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/content/papers/10.3997/2214-4609.201800450
2018-04-09
2024-03-28
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References

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