Analisis Bencana Tanah Longsor di Wilayah Provinsi Jawa Tengah

Isnaini, Rizkyah

doi:10.18326/imej.v1i2.143-160

Cited by 17 publications

(14 citation statements)

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“…Although a slope is vulnerable or has the potential for landslides, due to the slope conditions, rocks/soils and water systems, the slope will not be landslide or disturbed by its stability without being triggered by the trigger process. Avalanche triggering processes can be; Increased water content in the slope, Tremors on the slopes due to earthquakes, and indiscriminate cutting of the slope legs resulting in the slope losing the buffer force [15]. Some environmental management strategies that can be carried out to overcome landslide disasters are: 1.)…”

Section: Resultsmentioning

confidence: 99%

Environmental management efforts due to landslides in Lunyuk Rea Sumbawa

Utama¹,

Komarudin²,

Jayatri³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Indonesia is located in the movement of tectonic plates that collide with each other, namely the Eurasian plate, the Pacific plate, and the India-Australia plate, causing many changes in geological configurations that can cause disasters. Landslide disaster often occur in Lunyuk Rea Village which causes a decrease in environmental quality. This study aims to determine how the environmental management efforts due to landslides for environmental preservation. This study uses a survey method with a quantitative analysis approach based on topographic conditions in the field, spatial identification using remote sensing imagery, and digital elevation models as well as qualitative analysis by dividing land use classification, rock types, soil types, rainfall intensity. The results of the analysis of the level of environmental damage in Lunyuk Rea Village are included in the moderately damaged and heavily damaged categories. The environmental management strategy in Lunyuk Rea Village is to apply vegetative, mechanical, chemical, and normative methods.

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Section: Resultsmentioning

confidence: 99%

Environmental management efforts due to landslides in Lunyuk Rea Sumbawa

Utama¹,

Komarudin²,

Jayatri³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Pada tahun 2019, Jawa Barat mengalami kejadian longsor sebanyak 218, Jawa Tengah sebanyak 172, dan Jawa Timur mengalami 73 kejadian bencana longsor. Hal tersebut dapat terjadi karena bentuk morfologi pulau jawa yang bervariasi, seperti dataran tinggi dan perbukitan (Isnaini, 2019). Kejadian tanah longsor menyebabkan kerugian yang sangat banyak, seperti rusaknya tempat tinggal, rusaknya fasilitas umum, korban luka-luka, korban meninggal dunia, hingga rusaknya lahan pertanian yang menyebabkan terjadinya gagal panen.…”

Section: Pendahuluanunclassified

“…Bencana longsor dapat dihindari apabila mengetahui faktor penyebab serta tanda-tanda terjadinya bencana longsor. Tanda suatu lereng yang akan mengalami longsor adalah munculnya retakan pada lereng, munculnya mata air baru secara tiba-tiba, tebing menjadi rapuh, dan batuan mulai berjatuhan (Isnaini, 2019). Bencana longsor menyebabkan banyak sekali kerugian, oleh karena itu perlu dilakukan kajian terkait hubungan dari faktor-faktor yang dapat menyebabkan terjadinya longsor seperti kemiringan lereng, batuan permukaan, dan tekstur tanah.…”

Section: Pendahuluanunclassified

Hubungan Kemiringan Lereng Dan Persentase Batuan Permukaan Terhadap Longsor Berdasarkan Hasil Simulasi

Saputra

Utami

Agustina

2022

JTSL

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Landslide is the process of moving slope-forming material that moves out of the slope. Landslides cause adverse impacts, such as damage to residences, public facilities, death tolls, and damage to agricultural land. Factors for landslides are influenced by disturbing slope stability due to steep slopes, high rainfall intensity, and movement of soil, rock, or a mixture of both. The research was conducted at Agro Techno Park of Brawijaya University (silt loam texture soil) and the experimental field of Faculty of Agriculture Brawijaya University (clay texture soil). The landslide simulation tool used acrylic (100 cm x 50 cm x 75 cm), with an aluminum plate as a base for adjusting the slope. Artificial rain was set to be stable at an intensity of 70 mm hour-1. This study used a combination of three factors, namely soil texture (C: silt loam and J: clay); slope (L1: 40° and L2: 50°); and surface rock (B1: 25% and B2: 50%), so that there were eight treatments with ten repetitions. The landslide duration and volume were measured. The data obtained were then statistically analyzed through the normality test and the unpaired t-test. The results show that increasing slope gradient from 40° to 50° on silty loam texture with similar rock content at the soil surface resulted in 6 times faster and two times larger landslide volume. At a very steep slope, the effect of soil texture and % rocks at the surface would be smaller on landslide duration but became more significant on landslide volume. Generally, the landslide factors can be ranked from the most significant effect as follows: slope gradient, soil texture, and rocks coverage at the surface.

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“…Landslide in general is the movement of rock, soil or both to the bottom of a slope that occurs on a broken surface either curved (rotational) or planar (translational) [3]. According to Paimin, Sukresno and Pramono (2009) landslides occur if 3 (three) conditions are met, namely: (1) the slope is steep enough, (2) there is an impermeable sliding plane below the ground surface, and (3) there is enough water in the soil above the impermeable layer (sliding plane) so that the soil is water-saturated [4]. Cruden and Varnes (1996) [5] mentioned that the factors causing landslides are divided into 2 groups, namely causal factors and trigger factors.…”

Section: Introductionmentioning

confidence: 99%

Mapping of Landslide Potential Zone with FRM Method and Mitigation in Ayah, Kebumen Regency

Rahman,

Ramadan,

Hudzaifah

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Landslides phenomena occur yearly in Ayah sub-district and various factors persist in the future cause these landslides. The Frequency Ratio Method is one approach to mapping landslide potential. It involves direct data collection of potential landslide points in the field. This method uses parameters such as Lithology, slope, NDVI, Monthly Precipitation, and Land Use to calculate landslide potential. These parameters are overlaid with the frequency of potential landslide points in Ayah sub- district. The resulting frequency ratio value is classified into five potential landslide zones. The findings reveal that high values covering 10.97% and very high values covering 41.75% are distributed across almost all the settlements in Ayah Sub-district, except for the northern area. The high frequency value shows the dominance of steep slope, presence of weathered breccia and limestone lithology as well as agricultural land with fibrous roots and it is also related to the complex changes in land use, such as mining and clearing activities. This highlights the importance of taking preventive and escalation measures among the relevant stakeholders to minimize the impact of this landslide.

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Analisis Bencana Tanah Longsor di Wilayah Provinsi Jawa Tengah

Cited by 17 publications

References 0 publications

Environmental management efforts due to landslides in Lunyuk Rea Sumbawa

Environmental management efforts due to landslides in Lunyuk Rea Sumbawa

Hubungan Kemiringan Lereng Dan Persentase Batuan Permukaan Terhadap Longsor Berdasarkan Hasil Simulasi

Mapping of Landslide Potential Zone with FRM Method and Mitigation in Ayah, Kebumen Regency

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