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All Journal International Journal of Hydrological and Environmental for Sustainability
Listyani, R.A.T.
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Environmental Science

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The Relationship of Physical Properties of Rock to The Slope Stability of The Progo River Cliff in Sentolo-Sedayu, Kulon Progo, Yogyakarta, Indonesia Listyani, R.A.T.; Isnawan, Dianto; Wijaya, R.Andy Erwin
International Journal of Hydrological and Environmental for Sustainability Vol 2, No 3 (2023): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v2i3.331

Abstract

To support the increasingly advanced development of the Kulon Progo area, road access via the Progo River bridge needs to be maintained in instability. To support this, an engineering geological survey was carried out to find out the relationship between the physical properties of rocks and the stability of slopes on the cliffs of the Progo River. The research method begins with a field survey to obtain lithology and slope geometry data. Scanlines at selected locations were carried out to determine discontinuity areas and interpret rock weathering using a Schmidt hammer. Physical laboratory tests are useful for determining the bulk density and porosity of rocks, while from rock mechanical tests (shear strength) cohesion and friction angle values are obtained. The results of the safety factor analysis using the Slide program show that the slopes generally have a medium-high level of severity (Fk 1.2), supported by quite a lot of joint areas, varying porosity (4.12 – 25.10%) and the level of weathering is at level III-IV. Rock porosity is less related to slope strength, while weathering generally reduces slope stability.
Rainfall Analysis as a Hydrological Cycle in Mine Drainage: Implications for Mitigating Nickel Mining Damage in Pomalaa, Southeast Sulawesi Province, Indonesia Jumbadi, Jumbadi; Setiawan, Erwin; Listyani, R.A.T.
International Journal of Hydrological and Environmental for Sustainability Vol 4, No 1 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i1.557

Abstract

Inadequate mining management can harm the surrounding environment, including runoff that transports materials from mining sites to bodies of water or the sea. To prevent environmental damage, it is essential to implement mitigation measures in the mining area, such as constructing settling ponds. The research aims to understand the hydrological cycle in the context of nickel mining and develop strategies to mitigate environmental damage caused by mining activities. By examining rainfall data and its effects on mine drainage, the study seeks to provide insights into effective water management practices that can minimize the negative impacts of nickel mining on the environment. The data used is the value of rainfall for 10 years (2008 – 2017). The analysis was carried out on rainfall, runoff water discharge, and the rain catchment area. The results showed that the hydrological risk was 95.76% for the 10-year return period, the average rainfall was 119.84 mm, the designed rainfall was 175.85 mm, and the rain intensity was 38.41 mm/hour. The total discharge of runoff water in the north mine is 13.39 m3/sec, the middle is 25.34 m3/sec and the south is 11.02 m3/sec. The settling pond is designed in three working areas, namely the northern (991.72 m2), central (1,877.33 m2), and southern mining (816.241 m2) areas.
Co-Authors Dianto Isnawan Erwin Setiawan, Erwin Jumbadi, Jumbadi R. Andy Erwin Wijaya