Reinforcement mechanism in soil nailing for stabilization of steep slopes

This paper objectives are to; (i) identification of risky slopes (within 4 Provinces in Sumatra including Provinces of Riau, West Sumatra, Jambi and South Sumatra encompassing 840 kms of the “Jalan Lintas Sumatra” highway) based on Rockfall Hazard Rating Systems (RHRS) method; (ii) developing alternatives to stabilize slope hazards, and (iii) selecting appropriate slopes stabilization techniques based on both proactive approach and value engineering one. Based on the Rockfall Hazard Rating Systems (RHRS) method, it was identified 109 steep slopes prone to failure within this highway section. Approximately, 15 slopes were identified as potential high-risk slopes (RHRS scores were calculated >200 points). Based on the proactive approach, seven riskiest slopes ware identified. The preferred stabilization alternatives to remedy most of these slopes are suggested as follow; either (i) a combination of retaining wall and drainage, or (ii) gabion structure and drainage. However, different approaches may yield different results, there are at least 2 main consideration in prioritizing slope stabilization; (i) based on the riskiest slopes, and(ii) the least expensive stabilization alternatives.

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ECONOMIC AND SILVICULTURAL EFFICIENCY OF CREATION OF PROTECTIVE FOREST PLANTATIONS ON STEEP SLOPES

Agro-industrial technologies of the Central Russia ◽

10.24888/2541-7835-2018-10-35-41 ◽

2018 ◽

Vol 10 (4) ◽

pp. 35-41

Author(s):

P.N. Proyezdov ◽

◽

D.A. Mashtakov ◽

A.N. Avtonomov ◽

◽

...

Keyword(s):

Forest Plantations ◽

Protective Forest ◽

Steep Slopes

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ANALISIS KONDISI BAWAH PERMUKAAN DAN RISIKO BENCANA TANAH LONGSOR UNTUK ARAHAN PENATAAN KAWASAN DI DESA TENGKLIK KECAMATAN TAWANGMANGU KABUPATEN KARANGANYAR JAWA TENGAH

Jurnal Sains dan Teknologi Indonesia ◽

10.29122/jsti.v13i2.881 ◽

2013 ◽

Vol 13 (2) ◽

Author(s):

Heru Sri Naryanto

Keyword(s):

Information System ◽

Geographic Information System ◽

Regional Planning ◽

Rainy Season ◽

Great Influence ◽

Landslide Risk ◽

Potential Hazard ◽

Volcanic Deposits ◽

Steep Topography ◽

Steep Slopes

Karanganyar District is a hilly area with steep slopes, rock constituent of young volcanic deposits of Lawu Volcano products, thick soil and relatively high rainfall, so it is potential for large landslides in this region. The landuse in the Karanganyar District including the Tengklik Village is generally dominated by rice fields, seasonal gardens and settlements. Plantation made up in areas with steep topography has great influence on erosion and landslides. Similarly, many settlements are built on a slope so that the area is very vulnerable to the threat of landslides. In the rainy season landslides are common. The potential hazard of landslidesoccurred in 14 sub districts in Karanganyar District. Large landslides have occurred in Karanganyar on December 26, 2007 which claimed the lives of 62 people, with the greatest victims were in the Ledoksari Village, Tawangmangu. The Tengklik Village has already experienced creep type landslides, which have destroyed settlements, roads, seasonalgardens and all existing infrastructure in the area. In order to do the proper handling and anticipation of a catastrophic landslide, a variety of technological applications landslides using geographic information system (GIS) was then carried out, to detect the configuration of 2D geoelectrical subsurface prone areas for landslide risk study and regional planning.

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Kajian Debit Sungai di DAS Wae Ruhu, Kota Ambon

Jurnal Aplikasi Multidisiplinari Filsafat dan Sains (JAMFAS) ◽

10.30598/jamfasvol1iss1pp18-23y2018 ◽

2018 ◽

Vol 1 (1) ◽

pp. 18-23

Author(s):

Matheus Souisa ◽

Paulus R. Atihuta ◽

Josephus R. Kelibulin

Keyword(s):

River Discharge ◽

River Flow ◽

Secondary Data ◽

Data Retrieval ◽

Sediment Discharge ◽

Flood Prevention ◽

Retrieval Processes ◽

Water Catchment ◽

Steep Slopes ◽

Station Point

Ambon City is a region consisting of hilly areas and steep slopes with diverse river characteristics. Research has been carried out in the Wae Ruhu watershed in Ambon City which starts from upstream (water catchment) to downstream. This study aims to determine the magnitude of river discharge and sediment discharge in the Wae Ruhu watershed. This research was conducted in several stages including, secondary data collection, research location survey, preparation of research tools and materials as well as field data retrieval processes which included tracking coordinates at each station point and entire watershed, calculation of river flow velocity, river geometry measurements, and sampling sediment. The results showed that the average river discharge in the Wae watershed in the year 2018 was 1.24 m3 / s, and the average sediment discharge was 6.27 kg / s. From the results of this study and the field observations proposed for flood prevention and the rate of sediment movement are the construction of cliffs with sheet pile and gabions.

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Caragano fruticis—Pinion sylvestris, the new alliance of xerophillous pine-larch forests of the Southern Urals

Vegetation of Russia ◽

10.31111/vegrus/2002.03.42 ◽

2002 ◽

pp. 42-62 ◽

Cited By ~ 6

Author(s):

A. I. Solomeshch ◽

V. B. Martynenko ◽

O. Yu. Zhigunov

Keyword(s):

Southern Urals ◽

The Southern Urals ◽

Larch Forests ◽

Steep Slopes

Xerophillous pine-larch forests of the Southern Ural have been described as a new alliance Caragano fruticis—Pinion sylvestris. They occur on steep slopes of upper parts of mountain ridges with poorely developed stony soils. Alliance asigned to the class Brachypodio pinnati—Betuletea pendulae, order Chamaecytiso ruthenici—Pinetalia sylvestris. Associations Carici caryophylleae—Pinetum sylvestris and Ceraso fruticis—Pinetum sylvestris with four subassociations are described. Ecological and floristical peculiarities of new alliance in comparison with another alliances of the order Chamaecytiso-Pinetalia and with siberian class Rhytidio rugosi—Laricetea sibiricae have been discussed.

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Study of Seismic Design Method for Slope Supporting Structure of Soil Nailing

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.353-356.2073 ◽

2013 ◽

Vol 353-356 ◽

pp. 2073-2078

Author(s):

Tian Zhong Ma ◽

Yan Peng Zhu ◽

Chun Jing Lai ◽

De Ju Meng

Keyword(s):

Seismic Design ◽

Calculation Method ◽

Retaining Wall ◽

Earth Pressure ◽

Calculation Model ◽

Soil Nailing ◽

Case Record ◽

Analysis And Design ◽

Supporting Structure ◽

Earthquake Action

Slope anchorage structure of soil nail is a kind of economic and effective flexible slope supporting structure. This structure at present is widely used in China. The supporting structure belong to permanent slope anchorage structure, so the design must consider earthquake action. Its methods of dynamical analysis and seismic design can not be found for the time being. The seismic design theory and method of traditional rigidity retaining wall have not competent for this new type of flexible supporting structure analysis and design. Because the acceleration along the slope height has amplification effect under horizontal earthquake action, errors should be induced in calculating earthquake earth pressure using the constant acceleration along the slope height. Considering the linear change of the acceleration along the slope height and unstable soil with the fortification intensity the influence of the peak acceleration, the earthquake earth pressure calculation formula is deduced. The soil nailing slope anchorage structure seismic dynamic calculation model is established and the analytical solutions are obtained. The seismic design and calculation method are given. Finally this method is applied to a case record for illustration of its capability. The results show that soil nailing slope anchorage structure has good aseismic performance, the calculation method of soil nailing slope anchorage structure seismic design is simple, practical, effective. The calculation model provides theory basis for the soil nailing slope anchorage structure of seismic design. Key words: soil nailing; slope; earthquake action; seismic design;

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The variability of antidune morphodynamics on steep slopes

Earth Surface Processes and Landforms ◽

10.1002/esp.5110 ◽

2021 ◽

Author(s):

Ivan Pascal ◽

Christophe Ancey ◽

Patricio Bohorquez

Keyword(s):

Steep Slopes

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