JURNAL TEKNIK HIDRAULIK
Vol 10, No 2 (2019): JURNAL TEKNIK HIDRAULIK

Hubungan Antara Elevasi Muka Air Waduk Dan Panjang Lintasan Rembesan Terhadap Debit Rembesan Pada Bendungan Urugan Batu Inti Tegak (Studi Kasus Bendungan Jatibarang)

Siswanto Siswanto (Universitas Diponegoro)
Suprapto Suprapto (Politeknik Pekerjaan Umum)
Sri Sangkawati Sachro (Universitas Diponegoro)



Article Info

Publish Date
31 Dec 2019

Abstract

Rockfill dams have better stability than homogeneous soil dams. It allows to design the dam more slim with a higher slope. The disadvantage of rockfill dam is in the core zone as an impermeable zone. Zoned vertical core rockfill dam is a combination of various material properties. Geometry and drainage design will affect the seepage and phreatic line properties that occur. Numerical modeling and calculations are used to calculate the seepage profile more accurately. The combination of the parameters of the permeability coefficient (K), reservoir water level (Δh) and the length of the seepage path (L) can be used to determine the relationship between parameters with the same unit. 2D modeling take into account saturated/unsaturated conditions with steady state on each parameter. This study uses the Jatibarang-Indonesia dam as a basic model. The seepage profile at condition K1 (k = 1x10-5cm/sec) is q/k = -0.0018 (h2/L)2 + 1.3496h2/L + 53.241 and the seepage profile K2 (k=1x10-7cm/s) is q/k = -0.1521 (h2/L)2 + 90.402h2/L + 5480.2. This equations can be used to estimate seepage that occurs in a dam of other rock fill zoned vertical core dam based on the permeability coefficient value (K) more practically for all values of Δh and L reviewed.Keywords: Seepage, Rockfill Dam, Permeability, FEM, Numerical Analysis

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Journal Info

Abbrev

JTH

Publisher

Subject

Civil Engineering, Building, Construction & Architecture Engineering

Description

The Hydraulic Engineering Journal covers a variety of scientific fields including Irrigation Engineering, Environmental quality and water management Engineering, Swamp Engineering, Beach Engineering, Water building Engineering, Harvesting Engineering, Water hydraulics and geotechnical Engineering, ...