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Peran Ilmu Dasar dalam Geoteknik untuk Menunjang Pembangunan Berkelanjutan yang Berwawasan Lingkungan Zakaria, Zufialdi; Jihadi, Luthfan Harisan
Bulletin of Scientific Contribution Vol 14, No 3 (2016): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1290.962 KB) | DOI: 10.24198/bsc.v14i3.10971

Abstract

Geoteknik adalah salah satu dari cabang dari ilmu geologi yang erat hubungannya dengan pembangunan berkelanjutan yang berwawasan lingkungan. Kajian-kajian geoteknik memerlukan ilmu dasar seperti matematika, statistika, fisika, biologi, dan kimia. Beberapa kajian geoteknik berhubungan dengan pembangunan infrastruktur seperti jalan tol, jalan kereta api, jembatan, menara, pondasi gedung, desain lereng rekayasa, dan lain-lain. Makalah ini memperlihatkan beberapa penelitian geoteknik yang memanfaatkan ilmu dasar, yaitu desain lereng stabil, desain pondasi, hubungan antar variabel tanah, maupun perbaikan tanah.  Penelitiannya a.l.: 1) Analisis kestabilan lereng, tujuan untuk mendapatkan lereng stabil, metode menggunakan model Starlet, hasil yang didapatkan adalah desain lereng stabil dan antisipasi keruntuhan lereng pada zona kerentanan gerakan tanah. 2) Analisis dayadukung tanah, tujuan untuk menentukan dayadukung yang aman bagi fondasi, metode yang digunakan adalah melalui cara Terzaghi, hasil yang didapatkan adalah nilai dayadukung tanah yang diijinkan untuk peletakan fondasi. 3) Soil improvement, tujuan untuk perkuatan fondasi,  metode melalui pencampuran tanah dasar dengan kapur (CaO), hasil yang didapatkan adalah meningkatnya kekuatan dayadukung tanah pada tanah ekspansif. Kesimpulan dari semua penelitan geoteknik tersebut adalah kajian geoteknik tidak bisa lepas dari ilmu dasar matematika dan ilmu pengetahuan alam. Kata Kunci: geoteknik, pembangunan berkelanjutan, lereng stabil, dayadukung tanah, soil improvement Geotechnics is one of branches of geological science   are closely related to environmentally sustainable development. Geotechnical studies require some basic sciences such as mathematics, statistics, physics, biology, and chemistry. Some geotechnical studies related to the development of infrastructure such as toll roads,   railways, bridges, towers, building foundation, slope design engineering, and others. This paper shows some geotechnical studies that utilize basic sciences, namely:  stable slope design, foundation design, the relationship between variables soil, and soil improvement. The study included: 1) Slope stability analysis, objective research is to get a stable slope, the method is using the Starlet model, the results obtained are stable slope design and anticipation of the slope landslide on vulnerability zone of mass movement, 2) Analysis of soil bearing capacity, in order to determine safety bearing capacity for the foundation, the method is using Terzaghi equtaion, the results obtained are allowable soil bearing capacity for safety foundation. 3) Soil improvement, the goal of strengthening the foundation, the basic method by mixing soil with lime (CaO), the results obtained are the increasing strength of the soil bearing capacity on expansive soil. The conclusion of all geotechnical research are geotechnical studies cannot be separated from the basic sciences of mathematics and natural science. Keywords: geotechnical, sustainable development, stable slope, soil bearing capacity, soil improvement
“SAVE WATER, SAVE JAKARTA” CAMPAIGN AS LAND SUBSIDENCE MITIGATION IN JAKARTA Jihadi, Luthfan Harisan; Ali, Abu Abdillah; Zakaria, Zufialdi; Anural, Muhammad Bey
Bulletin of Scientific Contribution Vol 12, No 1 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v12i1.8363

Abstract

Jakarta, a very populated capital city of Indonesia, was built above alluvial deposit which is currently subsiding relative to sea level at a high rate. As a result Jakarta becomes more often to be flooded with water that delivered from other regions and also the sea level rises relative to land and shoreline move toward the ground are increasing feasibility of tidal flood to occur. Consolidation process of the ground acts as a cause to the land subsidence in Jakarta. The fact is water needs in Jakarta is high due to its high population. Therefore, large amount in withdrawal of groundwater occurs and causes the ground to settle. In order to decrease the rate of land subsidence, groundwater should be extracted in a proper, more effective and efficient way. Younger generation is advised to save water using a fresh approach which is easy to be understood and accepted. In the future, people in Jakarta will consider that saving water as a norm which brings great benefit to their environment, Jakarta.