Application of Gabion Slope Protection of Nanyang River Channel Regulation in Tianzhen County

2011 ◽  
Vol 374-377 ◽  
pp. 1938-1941 ◽  
Author(s):  
Lian Qing Zhao ◽  
Liang Gao ◽  
Hua Jin
Keyword(s):  
Retaining Wall ◽  
Vertical Wall ◽  
River Channel ◽  
Wire Mesh ◽  
Comprehensive Management ◽  
Channel Regulation ◽  
Geological Conditions ◽  
Management Project ◽  
Slope Wall ◽  
Tianzhen County

Nanyang River channel regulation is one of the major projects for river comprehensive management project in Tianzhen reach of the Nanyang River. According to the geological conditions of ecological restoration, Gabion retaining wall is designed to protect the bed or banks of a stream against erosion. Gabion is made of double twisted hexagonal wire mesh, the thickness of gabion basket and mattress is 50 cm and 30 cm respectively. The slope protection work consists of two parts, the lower part is vertical wall and the upper part is slope wall. The results show that this work can solve the problem of uneven settlement and river scouring, sustain restoration of biodiversity and achieve the harmonious coexistence of humanity and nature.

Study on In Situ Shearing Strength Test for the Retaining Wall Bottom in a Bank Revetment Project

2012 ◽  
Vol 214 ◽  
pp. 333-337
Author(s):  
Guang Zhang ◽  
Jun Rong Ma ◽  
Jing Xi Chen ◽  
Hua Lin Zhou ◽  
Dong Hua Wang
Keyword(s):  
Shear Strength ◽  
Retaining Wall ◽  
Friction Angle ◽  
Strength Test ◽  
Composite Foundation ◽  
Undisturbed Soil ◽  
Shear Strength Test ◽  
Geological Conditions ◽  
Shearing Strength

To obtain the necessary shear strength parameters of the retaining wall bottom in a bank revetment project, in-situ shearing strength test must be conducted. There are 3 kinds of foundations. One is undisturbed soil foundation, and the other two are composite foundations. Due to the limited of the engineering conditions, each kind of foundation has prepared one specimen only. So the single shearing strength test can't separate cohesion c and friction angle φ. To solve this problem, a method which is a combination of shear strength test and sliding strength test is used. Sliding strength test is carried on specimens that have already failed after shearing strength test. This test is carried in wet conditions and cohesion values and friction angle values are obtained. In addition, the influence of the processing of composite foundation to equivalent friction coefficient is analyzed. Test result can be referenced by bank revetment projects which have similar geological conditions.

scholarly journals Sliding failure analysis of a gabion retaining wall at km 31+800 of Lubuk Selasih – Padang city border highway, Indonesia

2020 ◽  
Vol 156 ◽  
pp. 02005
Author(s):  
Hanafi ◽  
Hendri Gusti Putra ◽  
Andriani
Keyword(s):  
Stability Analysis ◽  
Contact Area ◽  
Retaining Wall ◽  
Field Investigation ◽  
Wire Mesh ◽  
Soil Parameters ◽  
Road Section ◽  
Sliding Stability ◽  
The Stability ◽  
National Road

In August 2010, there was a landslide on the down-slope of national road section at Km 31+800 Lubuk Selasih – Padang City Border. In order to prevent further damage, it was necessary to make an immediate repair by constructing a gabion retaining wall. Since this repair was so urgent, physical and mechanical soil parameters for the stability analysis were determined from literature data. The stability analysis considered dangers of overturning, sliding, and soil bearing capacity. For the sliding stability analysis, the value for friction considered only the interaction between the soil and the base of the retaining wall, with the assumption that the contact area was equal to the total area of the entire base of the retaining wall. After the construction was completed, sliding failure occured due to pressure from the backfill embankment. This research performs a reanalysis of the retaining wall stability using soil and gabion parameters determined from field investigation and laboratory testing. In this reanalysis the friction contact area was assumed to be between the soil and the wire mesh of retaining wall. With these parameters and assumption, the main cause of sliding failure became clear, indicating that this approach increased the accuracy of stability analysis for gabion retaining walls.

scholarly journals INFLUENCE OF DISTANCE BETWEEN A RETAINING WALL AND THE EXISTING BUILDING ON STRESS-STRAIN STATE OF THE SYSTEM «RETAINING STRUCTURES – SOIL MASSIF»

2017 ◽  
Vol 2 (49) ◽  
pp. 159-170
Author(s):  
V. V. Ruchkivskyi
Keyword(s):  
Slip Surface ◽  
Mutual Influence ◽  
Retaining Wall ◽  
Retaining Walls ◽  
Deep Excavation ◽  
Existing Building ◽  
Geological Conditions ◽  
Geotechnical Problem ◽  
Solid Soil ◽  
Protective Structures

The results of work research of engineering protective structures in a densely built–up area with difficult engineering–geological conditions have been presented. The modeling of the geotechnical problem of deep excavation protection using a three-tier retaining wall has been performed.  The task of mutual influence of existing building and deep excavation with the change of distance between them is solved. The grafs of displacement’s dependence several tiers of retaining walls from the distance to an existing building have been presented. According to these data, a plot of the dependence of displacements of separate tiers of retaining walls from the distance to an existing building is constructed. The problem is solved by the finite element method using a nonlinear model of a solid soil environment. The character of the formation of zones of potential slip surface slope is revealed. The dependence of bending moments of the retaining walls from the distance to the existing building is shown. A safe location of an existing building to a deep excavation has been substinated.

The Application of Combination Prediction to Freight Volume of the Jingjiang River Channel Regulation Project

2014 ◽  
Vol 488-489 ◽  
pp. 1391-1394
Author(s):  
Ting Liu
Keyword(s):  
River Channel ◽  
Grey System ◽  
Elasticity Coefficient ◽  
Channel Regulation ◽  
Smooth Flow ◽  
Combination Forecasting ◽  
Forecasting Method ◽  
Freight Volume ◽  
Minimum Depth ◽  
Overall Effectiveness

The smooth flow of The Jingjiang River channel is the key to achieve the overall effectiveness of the Yangtze River shipping. By regulation project, the minimum depth of the Jingjiang River is from 3 meters to 3.5 meters. By regression analysis, growth curve, grey system and elasticity coefficient of transportation, freight volume is predicted in some feature years. Through the combination forecasting method analyzes the weight of the former four prediction methods. After the regulation project, the freight volume of the Jingjiang River will reach 296.32 million tons in 2035, and average increase of 10%.

Interslice force functions for computing active and passive earth force

1999 ◽  
Vol 36 (6) ◽  
pp. 1015-1029 ◽  
Author(s):  
Noshin Zakerzadeh ◽  
D G Fredlund ◽  
D E Pufahl
Keyword(s):  
Slip Surface ◽  
Limit Equilibrium ◽  
Retaining Wall ◽  
Vertical Wall ◽  
Force Function ◽  
Classical Solutions ◽  
End Point ◽  
Starting Point ◽  
General Limit ◽  
Selection Of

Recent methods to calculate the lateral earth force on a retaining wall have involved the method of slices and limit equilibrium concepts. An important issue in formulating the solution is the selection of an appropriate interslice force function (i.e., the ratio of the shear force to the normal force of vertical slices along the slip surface). This paper proposes interslice force functions that can be used to compute the active and passive earth forces in conjunction with the limit equilibrium method. An example problem involving a vertical wall with a horizontal backslope is analyzed using the general limit equilibrium (GLE) method and the proposed interslice force functions. The procedure recommended to compute the lateral earth force and the point of application of the force is outlined. The computed lateral earth forces, and the point of application, are compared with those from the classical solutions. For the active case, reasonable results were obtained when using an interslice force function that varies linearly from the starting point of the slip surface (at some distance from the wall) to the end point of the slip surface (adjacent to the wall). For the passive case, reasonable results were obtained when using an interslice force function that remains at zero from the starting point of the slip surface (at some distance from the wall) to the midpoint of the slip surface and then varies linearly from the midpoint of the slip surface to the end point of the slip surface (adjacent to the wall).

scholarly journals “Green” operation of a building - an object of cultural heritage

2021 ◽  
Vol 244 ◽  
pp. 05019
Author(s):  
Olga Yanina ◽  
Alexander Yanin ◽  
Anton Chigarev ◽  
Yanina Yanina
Keyword(s):  
Slope Stability ◽  
Cultural Heritage ◽  
Retaining Wall ◽  
Soil Conditions ◽  
Building Structures ◽  
Geological Processes ◽  
Heritage Site ◽  
Modern Development ◽  
Modern Engineering ◽  
Geological Conditions

The aim of the study is to determine the further «green» operation of a building - an object of cultural heritage in technogenic conditions that formed in the 20-21 centuries, based on monitoring the actual engineering and geological conditions of the urban historical territory of Voronezh. The study of the engineering-geological conditions of the territory and the structures of the building was carried out in three stages. At the first stage, a reconnaissance survey was carried out to identify surface forms of manifestation of modern engineering and geological processes; at the second stage - examination and monitoring of soil properties of the foundations and the building structures; at the third stage - calculation of slope stability in the Midas GTS NX software package and selection of the optimal slope reinforcement with a retaining wall. Changes in the physical properties of soils and the violation of soil conditions on the slope of the historical territory of Voronezh during technogenic soaking of soils were revealed. Calculation of slope stability in the Midas GTS NX PC revealed the influence of the surrounding modern buildings on the deformation of the building structures -object of cultural heritage. The influence of technogenic changes in slope stability in the process of modern development on the urban historical territory on the «green» ecology, i.e. safe operation of the building - a cultural heritage site.

scholarly journals Geological Aspect of Slope Failure and Mitigation Approach in Bireun - Takengon Main Road, Aceh Province, Indonesia

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Ibnu Rusydy ◽  
Didik Sugiyanto ◽  
Lono Satrio ◽  
. Zulfahriza ◽  
Imam Munandar
Keyword(s):  
Slope Stability ◽  
High Intensity ◽  
Slope Failure ◽  
Retaining Wall ◽  
Wire Mesh ◽  
Geological Condition ◽  
Main Road ◽  
Protection Method ◽  
Aceh Province ◽  
Assessment Survey

A soil and rock slope assessment survey was conducted along Bireun – Takengon main road in Aceh Province, Indonesia. The slope assessment survey was carried out to determine the geological condition, verify and identify the potential areas of slope failure and to study what type of slope stability and protection method could be applied to the road. Several research methodologies were conducted in the field such as rock and soil identification, and slope assessment. The survey was conducted in four selected areas along Bireun – Takengon main road. In study area I, soil creep occurred because of a presence of montmorillonite clay. The mitigation methods to reduce soil creeping in this area are building a retaining wall and pile. The shotcrete, wire mesh, net rock bolting, and rock removal method is suitable to apply in study area II. The shotcrete and soil nails were used because the type of rocks in those areas is sedimentary rock such as shale, sandstone, siltstone, and a boulder of a volcanic rock. The same approach shall be applied in study area IV. study area III was the best spot to learn about the mitigation approach for slope stability and provides many lessons learned. Aceh Province experience active tectonic movement, high intensity of rain, geological structures, a high degree of weathering, and high intensity of earthquake,as primary factors which trigger landslides. The techonology of slope stabilizing and protection methods can be applied to mitigate landslides.

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