CD Skripsi

Analisis Awal Gerak Butiran Pada Transport Sedimen Material Gambut

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ABSTRACT
In addition to peatland fires and the conversion of peatland into plantations, a
serious problem is the abrasion of peaty beaches. Abrasion is the result of sediment
transport processes parallel to the shoreline (longshore sediment transport). The
phenomenon of sediment transport in peat material itself can be said to be unique
and complex. Basically, the study of sediment transport begins by identifying the
interacting properties of sediment and flow. The interaction in question is a
condition where the flow begins to cause the movement of the particles it passes
through until a displacement occurs. The purpose of this research is to analyze the
relationship between flow velocity and grain diameter at the beginning of the
movement of peat material grains, as well as the parameters resulting from
theoretical calculations for peat material based on Shield theory. This research is
a physical modeling without scale of the movement of particles in a channel. The
initial process of sediment movement is simulated in a flume in the laboratory which
has been given samples of peat sediment and sand sediment (as a comparison) at
the bottom. Both samples are uniform grains with 0,25 – 4,75 mm diameter. After
the simulation is done, the results of the observation are compared with theoretical
calculations. Based on calculations using the Shields theory, the shear stress values
for peat sediments ranged from 0,124 – 1,523 N/m2 and shear velocity ranged from
0,011 – 0,039 m/s. Sand material sediments were found that grain diameter and
flow velocity did affect the initial motion of grains in sediment transport, but not so
with peat sediments. The movement of peat material is also influenced by the shape
factor of the grains. Where the flat grain shape moved first then followed by the
round grain, regardless of grain diameter.
Keywords: Peat, Initiation motion, Shields Theory, Critical Shear Stress

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

07 01. 121 (0067)

Penerbit

Pekanbaru : Universitas Riau – Fakultas Teknik – Teknik Sipil., 2021

Deskripsi Fisik

xii, 29 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

07 01. 121 (0067)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK SIPIL

Info Detail Spesifik

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Pernyataan Tanggungjawab

Daus

Versi lain/terkait

Lampiran Berkas

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