scholarly journals PERENCANAAN LERENG SUNGAI SUGUTAMU PADA LOKASI PROYEK PESONA SQUARE DEPOK

2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Putera Agung Maha Agung ◽  
Ramadhanty Saputri ◽  
Umar Alfaruqi Abdurrahman
Keyword(s):  
Slope Stability ◽  
River Water ◽  
Safety Factor ◽  
Water Surface ◽  
Surface Phase ◽  
The Road ◽  
Phase Slope ◽  
The People ◽  
Manual Calculation ◽  
Program Version

ABSTRACTThe location of inspection and vehicle road at Pesona Square Depok Project is on the side of Sugutamu River and contoured land giving a worried about sliding and erosion. This research was conducted for design the Slope of Sugutamu River At Pesona Square Depok Project which is effective, efficient, and gives comfort to the people there in using the road. Slope stability planning divided into 4 phase of calculation. Slope without outside load and not affected by river water surface phase, slope without outside load but affected by river water surface phase, slope with outside load but not affected by river water surface phase, and slope with outside load and affected by river water surface phase. The analysis uses two methods, manual analysis Fellenius methods and computer analysis PLAXIS program version 8.2. The shape and angle of the slope selected in this design is 60° and no-staging.. The value of minimum safety number from manual calculation of Fellenius method is 1,287 and PLAXIS program version 8.2 is 3,718. The value of the safety factor used is 1.25.Keywords: slope stability, safety factor, Fellenius method, PLAXIS version 8.2ABSTRAKLetak jalan inspeksi dan kendaraan pada Proyek Pesona Square Depok yang bersebelahan dengan Sungai Sugutamu dan bentuk tanah yang berkontur menimbulkan kekhawatiran akan terjadinya sliding dan erosi. Penelitian ini dilakukan untuk merencanakan lereng Sungai Sugutamu Pada Lokasi Proyek Pesona Square Depok yang efektif dan efisien serta memberikan kenyamanan kepada warga setempat dalam menggunakan jalan tersebut. Perencanaan stabilitas lereng dilakukan dalam empat fase perhitungan. Fase lereng dalam keadaan tanpa beban luar dan muka air sungai, fase lereng tanpa beban luar namun dipengaruhi muka air sungai, fase lereng dibebani beban luar namun tidak dipengaruhi muka air sungai, serta fase lereng dibebani beban luar dan dipengaruhi muka air sungai. Analisis menggunakan dua metode yaitu analisis manual metode Fellenius dan analisis komputer dengan program PLAXIS versi 8.2. Bentuk dan sudut kemiringan lereng yang dipilih dalam perencanaan ini yaitu sebesar 60˚dan tanpa undak (no-staging). Nilai angka keamanan terkecil yg didapat dari perhitungan manual metode Fellenius yaitu 1,287 dan program PLAXIS versi 8.2 sebesar 3,718. Nilai minimum faktor keamanan yang digunakan sebesar 1,25.Kata kunci : stabilitas lereng, faktor keamanan, metode Fellenius, PLAXIS versi 8.2

scholarly journals ANALISIS STABILITAS LERENG MENGGUNAKAN SOFTWARE PLAXIS 8.6 DENGAN DINDING PENAHAN TANAH (RETAINING WALL) (STUDI KASUS RUAS JALAN NASIONAL BANDA ACEH-MEDAN STA 83+135 GUNUNG SEULAWAH)

2018 ◽  
Vol 1 (3) ◽  
pp. 76-82
Author(s):  
Wihardi Wihardi ◽  
Munirwansyah Munirwansyah ◽  
Sofyan M. Saleh
Keyword(s):  
Slope Stability ◽  
Safety Factor ◽  
Retaining Wall ◽  
Road Construction ◽  
Local Area ◽  
Traffic Load ◽  
Road Infrastructure ◽  
The Road ◽  
The Stability ◽  
Banda Aceh

Road infrastructure is very important and is a key enabler for the economy. If the road infrastructure was damaged or had various problems such as sliding, the movement of goods and passengers will be hampered and delayed to the acceleration of development in the local area. The landslide and movement of groundwater is a problem that often occurs repeatedly on some streets. Therefore, it is necessary to study the strengthening of the slopes at the bottom of the road construction with retaining wall. This study aims to analyze slope stability by getting numbers Safety Factor (FK). The analysis is used to analyze the stability of slopesusing the finite element method with the help of software Plaids, The scope of this review includes the calculation of slope stability at the national road from Banda Aceh - Medan Sta. 83 + 185 Mount Selawah. The results of slope stability analysis on the existing condition by using Plaxis software at the point of a review is not safe (FK 1.25). Thus, it is done handling the retaining wall, installation of anchors. Based on the analysis of slope stability after being given the strengthening of the slopes with a retaining wall and the installation of anchors using Plaxis software under the influence of traffic load in an unsafe condition (FK 1.25). Then additional handling is done by changing the angle of the slope so that the value of the safety factor (FK) 1.25.

scholarly journals Peningkatan Stabilitas Lereng pada Ruas Jalan Tawaeli – Toboli dengan Vegetasi/Bioengineering

2021 ◽  
pp. 23-32
Author(s):  
S.A. Wandira ◽  
A. Rahayu
Keyword(s):  
Shear Strength ◽  
Slope Stability ◽  
Safety Factor ◽  
Friction Angle ◽  
Soil Samples ◽  
Plant Roots ◽  
Soil Conditions ◽  
Mountainous Area ◽  
Stability Calculation ◽  
The Road

Tawaeli - Toboli is one of the road that often undergo landslide. Most of these roads are in a mountainous area with high steep slopes and poor soil conditions. The road conditions worsened, especially in rainy season resulting the citizen do not know anywhere that is prone to landslides such as in Km 16 to 17. The purpose of this study was to analyze slope stability using bioengineering methods, determine the shear strength of soil without plant roots and soil with plant roots and to determine the potential for landslides that will occur. Bioengineering is used to increase the strength of the soil, and stabilize slopes and reduce erosion on slopes. The slope stability calculation using the Bishop slice method. The calculating of safety factor analyzed using the Slope / W application and manually. Soil samples were taken from 3 (three) points and the soil strength parameters,  soil cohesion and friction angle, were obtained through laboratory testing. Tests were carried out using rootless and rooted soil samples. In addition, direct field observations were made to obtain slope angles and slope heights. The results showed that the parameters of soil shear strength, cohesion and friction angle increased with the presence of plant roots. The results of the slope stability analysis show that the conditions of the slope are stable at slope 1 (Km 16) and slope 3 (Km 17) with a safety factor greater than 1.5. While slope 2 (Km 16 +300) has the potential for landslides as a safety factor of less than 1.5. The use of bioengineering increases the safety factor to be greater than 1.5. The calculation of the value of the safety factor using the Slope / W program and the Bishop manual is not much different, but the calculation time with the Slope / W program is faster

scholarly journals INVESTIGATION OF POTENTIAL LANDSLIDES DUE TO LIQUEFACTION ON THE BALAROA ROAD SECTION USING THE LIMIT EQUILIBRIUM METHOD

2021 ◽  
pp. 1-8
Author(s):  
Sriyati Ramadhani ◽  
Martini ◽  
Mastura Labombang ◽  
Shafira Yuniar
Keyword(s):  
Numerical Modeling ◽  
Stability Analysis ◽  
Slope Stability ◽  
Safety Factor ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
The Road ◽  
Road Section ◽  
Unsafe Condition ◽  
Analysis Models

The earthquake that occured on September 28, 2018 in Palu city triggered liquefaction. Balaroa is one of the affected locations by liquefaction. The Balaroa area has several landslides including the road section which causes slopes to form. The purpose of this study is to identify the potential of landslides due to liquefaction on the Balaroa road section based on numerical modeling using the limit equalibrium method. This study was carried out on the Balaroa road section, which is geographically located in West Palu sub district, Palu City, Central of Sulawesi Province. The slope stability analysis models three locations that are prone to landslides using the limit equalibrium method assisted by Slide 7.0 program.The results show that the safety factor value of those three locations on the Balora road section using methods of Ordinary, Bishop and Janbu is FS<1, it indicates that the slope is in unsafe condition and prone to lanslides, therefore it needs to be taken into consideration by government

scholarly journals Perencanaan Perkuatan Lereng Menggunakan Geoframe di Jalan Raya Dampit-Lumajang

2022 ◽  
Vol 10 (1) ◽  
pp. 59-68
Author(s):  
Lafridha Alyazahari ◽  
Luthfi Amri Wicaksono ◽  
Dwi Nurtanto
Keyword(s):  
Slope Stability ◽  
Safety Factor ◽  
Rainy Season ◽  
Factor Of Safety ◽  
Soil Mass ◽  
Soil Stability ◽  
Safe Condition ◽  
Manual Calculation

A Landslide is the movement of soil mass or rock constituents down the slope due to disturbance of soil stability. One of the factors that affect soil stability is the rainy season as happened in Sumberwuluh Village, Candipuro District, Lumajang Regency. The alternative used to stabilize the slope is by changing the slope geometry, then adding geoframe reinforcement. This study aims to determine the value of the factor of safety (SF) of unreinforced slopes, after changing the slope geometry, and after being given geoframe reinforcement. The method used in analyzing slope stability is the Ordinary/Fellenius method. The results of the calculation of slope stability without reinforcement using the Rocscience Slide software obtained a SF of 0.719, while the manual calculation obtained a SF of 0.7191. The two values ​​of the safety factor are less than 1.25, which means that landslides often occur. The results of the calculation of slope stability after changing the geometry of the slopes obtained a SF of 0.828 where the value is less than 1.25 which means that landslides often occur. The slopes that have been changed geometry are added with geoframe reinforcement. The results of the calculation of slope stability using geoframe reinforcement obtained a SF of 1.315 where the value is more than 1.25 which means that landslides are rare or slope in a safe condition.

scholarly journals ANALISIS STABILITAS LERENG DENGAN KONTRUKSI DINDING PENAHAN TANAH TIPE COUNTERFORT

2018 ◽  
Vol 1 (2) ◽  
pp. 58-68
Author(s):  
Karsa Ciptaning ◽  
Yuhanis Yunus ◽  
Sofyan M. Saleh
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Safety Factor ◽  
Retaining Wall ◽  
Slope Angle ◽  
Slope Stability Analysis ◽  
Seismic Load ◽  
Seismic Zone ◽  
The Road ◽  
The Impact

The Babahrot - Blangkejeren road of a segment is one of the most frequently affected by a landslide due to its location in the range of hills in Aceh Province. The road is the only one facilities to connect between both cities, and it is the only one to access for crop trading as well other plantation. The impact of landslide causes disconnection from Gayo Lues to South West Aceh or vice versa. Therefore, it is necessary to study the slope reinforcement at the bottom of the road construction with retaining wall counterfort type.  This study aims to analyze slope stability by obtaining reasonable Safety Factor (SF). The method used is Fellenius Method and combining modeling using the Geoslope software. The Fellenius calculation employed static seismic load. Meanwhile, the Geoslope Program utilized either with or without static seismic load.  The static analysis was carried out based on Indonesian Seismic Zone map (2004) for 50 years (coefficient 0.229). The scope of the analysis was a calculation of slope stability includes calculating slope stability on STA 13 + 885. The result of slope stability analysis on the existing using gdry and gwet with the Geo Slope software both without and by using static seismic load on STA 13+885 is unsafe. Thus, handling the existing is needed. The counterfort of retaining wall is considered to use for alternative slope stability construction. The result of slope stability analysis using Counterfort has safety factor 1,5, if additional handling is done by changing slope angle 20°.

scholarly journals DESAIN ULANG BADAN JALAN DENGAN GEOTEKSTIL SEBAGAI ALTERNATIF PENINGKATAN STABILITAS LERENG

2021 ◽  
Vol 15 (1) ◽  
pp. 32
Author(s):  
Rosiane Agustin ◽  
Handi Sudardja
Keyword(s):  
Tensile Strength ◽  
Slope Stability ◽  
Safety Factor ◽  
Type Iii ◽  
The Road ◽  
Toll Road ◽  
Road Section ◽  
Service Period ◽  
Cut And Fill

Abstract The condition of Ciawi – Sukabumi Toll Road section 2 has various topographies with difference of elevation. To get a safe and comfortable road alignment, cut and fill works are carried out. During the landfill work at STA.18 + 700 – STA.18 + 900 landslides occurred on the slopes. To ensure that the slope conditions are safe during the service period, redesign of the road bodies is carried out to produce slopes with a safety factor value (SF) ≥ 1.25 (Bowles, 1993) and SF ≥ 1.10 if the earthquake is calculated (SNI 8460: 2017). The slope stability phase is calculated on the original slope conditions by taking into account the potential for earthquakes at the research location. This analysis was carried out with manual calculations and the GeoStudio 2018 R2 sub program SLOPE/W, both calculations using the Simplified Bishop Method. The results of the sliding analysis obtained the original slope SF without considering the earthquake of 1.48 for manual calculations and 1.41 for SLOPE/W. Then the SF of the slopes with the effect of the earthquake is 0.79 with manual calculations and 0.82 with SLOPE/W, it is found that all conditions are basic sliding. The analysis showed that the earthquake had a significant impact on slope stability, with a decrease in slope SF of 44.23% and the slope was categorized as unstable. Then, it is recommended to add woven geotextile with a tensile strength of 200 kN and a river stone gabion counterweight. From the modeling in each condition that has been simulated, it is found that the countermeasures are Type III with slope SF 1.15 as a redesign. . Keywords: Bishop, Geotextile, Safety factor, SLOPE/W, Slope stability

Slope Stability Analysis of Elastic Limit Equilibrium Method

2013 ◽  
Vol 275-277 ◽  
pp. 1423-1426
Author(s):  
Lin Kuang ◽  
Ai Zhong Lv ◽  
Yu Zhou
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Safety Factor ◽  
Slip Surface ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Slope Stability Analysis ◽  
Sliding Surface ◽  
Tangential Stresses ◽  
Equilibrium Method

Based on finite element analysis software ANSYS, slope stability analysis is carried out by Elastic limiting equilibrium method proposed in this paper. A series of sliding surface of the slope can be assumed firstly, and then stress field along the sliding surface is analyzed as the slope is in elastic state. The normal and tangential stresses along each sliding surface can be obtained, respectively. Then the safety factor for each slip surface can be calculated, the slip surface which the safety factor is smallest is the most dangerous sliding surface. This method is different from the previous limit equilibrium method. For the previous limit equilibrium method, the normal and tangential stresses along the sliding surface are calculated based on many assumptions. While, the limit equilibrium method proposed in this paper has fewer assumptions and clear physical meaning.

scholarly journals China's Dilemmas on the Road to Reforms Under Xi Jinping

2015 ◽  
Vol 5 (1) ◽  
pp. 133-149
Author(s):  
Juhan Värk
Keyword(s):  
Central Committee ◽  
Shadow Banking ◽  
Xi Jinping ◽  
Strategic Partner ◽  
Military Reform ◽  
The Road ◽  
National Leader ◽  
The People ◽  
The World ◽  
On The Road

AbstractOn 15 November 2012, at the plenary session of the Central Committee of the Communist Party of China, Xi Jinping was elected the Party' general secretary, whereas he also became the chairman of the influential Central Military Commission. Too eager to wait to be inaugurated as President of the People' Republic of China in March 2013, the new national leader announced that in the following decade he is guided by the main objective of his predecessor Hu Jintao to double the prosperity of the people by the year 2020 and to keep the country' economy stable and growing fast. Unfortunately, it will be difficult for the new leader of China to implement his intentions, since, presumably, the country' new leadership will be from the older generation, hardliners, and, most importantly, politically conservative. But the difficulties lie in carrying out economic reforms because of rampant corruption and shadow banking in the central apparatus and in regions.According to the World Bank' analysis, China has become the world' largest economy. But the large expenditures to military reform and environmental protection are not sufficient for Xi Jinping to accomplish the goal to raise significantly the poor living standards of Chinese people. China has also faced difficulties in complying with the basic principles of its foreign policy, especially after the annexation of Crimea and its incorporation into the Russian Federation by China' strategic partner, Russia. In the past, China has carried out campaigns against “Americanization”, although with no tangible results. Thus, the leaders of today' China are faced with a number of dilemmas.

scholarly journals Bulgaria in old Serbian accounts of pilgrimage

Balcanica ◽  
2004 ◽  
pp. 159-169
Author(s):  
Tomislav Jovanovic
Keyword(s):  
Eighteenth Century ◽  
Ottoman Empire ◽  
Travel Literature ◽  
Holy Land ◽  
Literary Value ◽  
The Road ◽  
The People

A rather small portion of old Slavonic literatures is thematically linked with the journey to the Holy Land. Of many Serbian pilgrims over the centuries only three left more detailed descriptions of Bulgarian places and parts: patriarch Arsenije III, Jerotej of Raca and Silvestar Popovic. They described, each in his own way, some of the places and areas along the road to Istanbul or Salonika. Their vivid depiction of encounters with people and observations about the places they saw on their way reveal only a fragment of life in the seventeenth- and eighteenth-century Ottoman empire. In a seemingly ordinary way, they incorporate into their own epoch the legends heard from the people they met. The descriptions of Bulgarian parts in the Serbian accounts of pilgrimage have all the appeal that generally characterizes travel literature. Although their literary value is modest they belong among the works characterized by the simplicity and immediacy of experience. Rather than being the result of a strong literary ambition, they are witness to the need to speak about the great journey, quite an adventurous enterprise at the time.

scholarly journals ANALISIS KESTABILAN LERENG HIGHWALL MENGGUNAKAN METODE BISHOP SIMPLIFIED PADA PIT 13 PT BELAYAN INTERNASIONAL COAL KECAMATAN MARANGKAYU KABUPATEN KUTAI KARTANEGARA

2021 ◽  
pp. 46-54
Author(s):  
Muhammad Amin Syam ◽  
Heriyanto Heriyanto ◽  
Hamzah Umar
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Safety Factor ◽  
Slope Angle ◽  
Stable Condition ◽  
Physical And Mechanical Properties ◽  
Slope Stability Analysis ◽  
Open Pit ◽  
Mining Company ◽  
Water Saturated

PT Belayan Internasional Coal is an open-pit system mining company, one of its geotechnical activities is the construction of the slopes. Slope stability analysis used the Bishop Simplified method to obtain the value of the dynamic safety factor (≥ 1,1). Currently, the value of the Safety Factor (FK) is an indicator in determining whether the slope is stable or not. The parameters used in the slope stability analysis are the physical and mechanical properties of the rock, namely weight (ɣ), cohesion value (c), and internal shear angle (∅). From the results of dynamic overall slope calculations, the recommended overall slope is constructed with an individual slope angle of 55°, a bench width of 5 meters, a height of 10 meters, and the number of individual slopes of 8 slopes. This design will produce dimensions of the overall slope with 41° slope angle, 80 meters high, and has a dynamic safety factor value of 1,102 with the water-saturated condition. Thus, the slopes are in stable condition.

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