Analysis of Correlation Between Bearing Capacity of the Land Against Land Settlement and Duration of Decline in Semarang City

Wahyudi, P A

doi:10.21660/2020.73.57306

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…of Semarang, which is the center of government and economy (Wijaya et al, 2018;Pigawati et al, 2019 ;Wahyudi et al, 2020). This phenomenon has an impact on decreasing environmental quality, characterized by high air temperatures, floods, and tidal decreasing the level of environmental comfort (Sunaryo et al, 2018;Sejati et al, 2020;Putra & Pigawati, 2021;Hanafi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Land Use Change Analysis to Springs Conditions in Gunungpati Sub-District, Semarang City

2022

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Semarang City has the fastest development in Central Java Province, where the activities are no longer centralized but have expanded to the upper part of the region. The ongoing development certainly impacts changes with the increasing area of built-up land that converts to another cover, such as vegetation. The phenomenon impacts the balance of the environment, one of which is the source of springs. Therefore, this study aims to map the spatial distribution of the springs and identify their physical quality. A quantitative approach was used with spatial analysis. Meanwhile, data collection techniques used document research, high-resolution image interpretation and field surveys. Field surveys were conducted to test the accuracy of land use maps and measurements of discharge, temperature, pH and brightness of the springs. The results showed that there is a change in land use from 2016 - 2021 with an increase in settlements of around 77.25 hectares and commercial service buildings by 178.79 hectares. For land use with the largest decrease in area, agricultural land covers and mixed garden/vegetation covers an area of 207.01 and 50.57 hectares. There were 114 springs at the research site, of which 5% of the springs had a relatively large discharge above 10 liters/second, while the other 47% had a small discharge. For pH conditions, there were 6 springs with a pH value of less than 6. Land use change from vegetation to flying land impacts the reduction of the water supply in the soil. The impact can be seen by the non-production of several springs, where 21 springs have not been discharged. In conclusion, there is a change in land use with an increase in built-up from 2016 - 2021 by 256.04 hectares. The increase in built-up is partly in conservation areas, hence damaging several springs. Keywords : Land use change; Springs conditions; Gunungpati Sub-District Copyright (c) 2022 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License

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Section: Introductionmentioning

confidence: 99%

Land Use Change Analysis to Springs Conditions in Gunungpati Sub-District, Semarang City

2022

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Distribution of land stability based on standard penetration value (SPT) with various depth in Semarang city, Indonesia

Wahyudi

Purwanto

Putranto

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Land stability is one of the main determining factors for the bearing capacity of the environment. The land stability is influenced by the condition and characteristics of the resources in the environment. The supply capacity in terms of the level of land stability for spatial use allocation has been based on the capacity of land for agriculture and the physical aspects of the land. It accordance with the local regulation i.e. no. 17 of 2009. Land stability includes the ability of land for agriculture and the physical aspects of land, as well as the stratigraphy of subsurface soil mass, especially geological characteristic. The research was conducted in Semarang City Indonesia by drilling and standard penetration test (SPT) and taking 448 undisturbed samples (UDS’s) of soil that scattered in the research area. Analysis of UDS’s have been carried out in the laboratory to obtain comparisons with SPT values in determining the level of land stability both vertically and horizontally. Soil types obtained are clay, silt, silt-sand, sand, and sand stone with a level of consistency and density in accordance with the measured SPT. Land stability values ranged from 0.201 kg/cm2-14.248 kg/cm2 covering all types of soil with different consistencies and density. The distribution of land stability is given in an infographic to get an overview of the land stability levels geographically at a depth of 2.5m, 5.0m, 7.5m, and 10.0m. This infographic can be useful for spatial evaluation, engineering guidance, and environmental research in Semarang City, Indonesia.

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Analysis of Correlation Between Bearing Capacity of the Land Against Land Settlement and Duration of Decline in Semarang City

Cited by 2 publications

References 9 publications

Land Use Change Analysis to Springs Conditions in Gunungpati Sub-District, Semarang City

Land Use Change Analysis to Springs Conditions in Gunungpati Sub-District, Semarang City

Distribution of land stability based on standard penetration value (SPT) with various depth in Semarang city, Indonesia

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