The Performance of Horizontal Drain as a Landslide Mitigation Strategy

Sari, Putu Tantri Kumala

doi:10.1007/978-981-16-9348-9_39

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…This small seepage occurs if the soil conditions in the field are homogeneous and there are no cracks on the surface. If rainwater seeps into the ground, horizontal drainage should be installed as an effort to speed up the flow of water out of the slope so that it does not reduce its stability [15], [16]. However, handling the impact of rainwater seeping into the ground is not carried out at this location so that the heavier the rain, the more it impacts the stability of the slope.…”

Section: Based On Field Observationsmentioning

confidence: 99%

The Effect of Changes in Rainfall Patterns due to Climatic Change on the Cutting Slope Stability of Landslides Case in East Java, Indonesia

Sari,

Lastiasih,

Mochtar

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This study was conducted to determine the causes of landslides that often occur on the cutting slope on the side of the Gempol-Pandaan toll road in East Java. Furthermore, this study aims to ascertain the relationship between alterations in rainfall intensity due to climatic change on slope stability. Observation of conditions in the field, topographic contour measurements, field soil testing, real-time data processing of rain intensity, and numerical simulation for parametric study were carried out to determine the effect of changes in daily rainfall on slope stability. Also, numerical analysis using limit equilibrium as well as finite element methods with SEEP/W and SLOPE/W was carried out. The results of field observations showed there was no rainwater collection channel in the slope area, causing the water to infiltrate into the cutting slope body. The fluctuating and increasing rainfall intensity during 90 days of observation can reduce the safety factor of slope by up to 25%. This decrease in safety factors is believed to increase when the duration and intensity of the rain increase as a result of climatic change. Therefore, the integration between the impact of climate change on alterations in rain intensity in an area needs to be considered as an effort to mitigate landslides.

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Section: Based On Field Observationsmentioning

confidence: 99%

The Effect of Changes in Rainfall Patterns due to Climatic Change on the Cutting Slope Stability of Landslides Case in East Java, Indonesia

Sari,

Lastiasih,

Mochtar

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Ideally, the drain should intersect the aquifer at a small angle and pass completely through it. This maximizes the interface area between the drain and the aquifer, thereby enhancing the drain's effectiveness [25].…”

Section: Design Of Horizontal Drainmentioning

confidence: 99%

Evaluation of the Performance of the Horizontal Drain in Drainage of the Infiltrated Water from Slope Soil under Rainfall Conditions

Zhang,

Wang,

Gao

et al. 2023

Sustainability

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It is known that rainwater infiltration is crucial for rainfall-induced slope failure because the infiltrated water can significantly weaken the shear strength of unsaturated soil. Horizontal drains are commonly used to provide appropriate drainage for the rainwater that percolates out of a slope. However, the effects of the length and location of the subsoil pipe on the performance of horizontal drains have not been extensively investigated. In this paper, a parametric analysis by using a numerical model was adopted to investigate the distribution of pore-water pressure in a slope. The results reveal that an inclination angle of 10–15 degrees and strategic placement at the slope toe and mid-slope provide optimal drainage performance, as compared to the effect of pipe length. Multi-layers of horizontal drain (based on 10 m length) are recommended for slopes with a height of more than 15 m.

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“…Furthermore, based on many recent studies, the presence or absence of rainfall significantly influenced the embankment stability. Moreover, the embankment is not equipped with a horizontal drain which is proven to be effective in reducing the impact of rain on the stability of the embankment [28], [29]. Heavy rain hit the field just before the landslide and continued to rain for several days.…”

mentioning

confidence: 99%

Causes of Landslides in Road Embankment with Retaining Wall and Pile Foundation: A Case Study of National Road Project in Porong-Sidoarjo, Indonesia

Sari¹,

Mochtar²

2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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This study was conducted to determine the cause of landslides in the toll road embankment of the national road project in the Porong-Sidoarjo area. The landslide was observed only on the north side of the embankment, with a maximum height of 7.8 meters from the subgrade despite the reinforcement with a retaining wall and pile foundation. The land shift and subsidence on the Northside led to a decline in the embankment elevation and the displacement to a maximum depth of 3.50 m. Back analysis through the limit equilibrium method was used to determine the strength of the existing reinforcement against the landslide. The results showed that the heavy rain was indeed one of the causes of landslides in the location, while the main cause was the depth of soft soil, much deeper than those in the surrounding locations. This is why a severe landslide was recorded on one side of the embankment. Moreover, the existing anti-slide pile reinforcement was discovered not to be sufficient due to its shallower length compared to the area of the landslide, and this was associated with the absence of overall stability analysis in this design. The findings showed that it is necessary to conduct a comparative study between the overall stability and the active and passive forces analyses for the soil to produce the safest design required to avoid landslides.

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The Performance of Horizontal Drain as a Landslide Mitigation Strategy

Cited by 5 publications

References 14 publications

The Effect of Changes in Rainfall Patterns due to Climatic Change on the Cutting Slope Stability of Landslides Case in East Java, Indonesia

The Effect of Changes in Rainfall Patterns due to Climatic Change on the Cutting Slope Stability of Landslides Case in East Java, Indonesia

Evaluation of the Performance of the Horizontal Drain in Drainage of the Infiltrated Water from Slope Soil under Rainfall Conditions

Causes of Landslides in Road Embankment with Retaining Wall and Pile Foundation: A Case Study of National Road Project in Porong-Sidoarjo, Indonesia

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