scholarly journals Study on Solidification Treatment of Electrolytic Manganese Slag and Numerical Simulation of Slope Stability

2021 ◽  
Author(s):  
Meng Chen ◽  
Jianming Wei ◽  
Lipei Jia ◽  
Qiqi Yao ◽  
Yusu Chen
Keyword(s):  
Numerical Simulation ◽  
Slope Stability ◽  
Electrolytic Manganese ◽  
Manganese Slag

scholarly journals Study On Solidification Treatment of Electrolytic Manganese Slag And Numerical Simulation of Slope Stability

2021 ◽  
Author(s):  
Meng Chen ◽  
Jianming Wei ◽  
Lipei Jia ◽  
Qiqi Yao ◽  
Yusu Chen
Keyword(s):  
Slope Stability ◽  
Construction Projects ◽  
Negative Impact ◽  
Friction Angle ◽  
Ammonia Nitrogen ◽  
Ecological Environment ◽  
Dead Weight ◽  
Element Simulation ◽  
Electrolytic Manganese ◽  
Manganese Slag

Abstract Manganese slag contains a large number of easily migrated heavy metals and ammonia nitrogen and other pollutants, which have a negative impact on the ecological environment. To verify the feasibility of manganese slag as highway subgrade material, manganese slag samples were solidified by mixing fly ash, cement and quicklime, and the solidification effect was compared. The permeability coefficient, cohesion and internal friction angle of manganese slag were measured by permeability test and triaxial test. On this basis, optimization of manganese slag road sections under different slope heights and different slope ratios in a total of 50 schemes was carried out. GeoStudio software is used to perform finite element simulation on the slope stability of manganese slag slopes under dead weight and rainfall. This study provides a reference for highway construction projects using manganese slag.

scholarly journals Analysis of Basic Physical and Chemical Characteristics of Manganese Slag before and after Solidification and Its Feasibility as Highway Slope

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5530
Author(s):  
Meng Chen ◽  
Jianming Wei ◽  
Runhua Zhang ◽  
Lipei Jia ◽  
Qiqi Yao ◽  
...  
Keyword(s):  
Construction Projects ◽  
Raw Materials ◽  
Chemical Properties ◽  
Guizhou Province ◽  
Particle Analysis ◽  
Material Strength ◽  
X Ray ◽  
Electrolytic Manganese ◽  
Manganese Slag ◽  
Physical And Chemical

Manganese slag is a kind of industrial waste produced by electrolytic production of manganese metal. The traditional method of stacking manganese slag not only causes waste of resources, but also produces environmental pollution. Finding harmless, effective, and economical disposal technology of manganese slag has gradually become a research hotspot and difficulty in the field of electrolytic manganese industry and environmental protection. To verify the feasibility of using manganese slag as roadbed material, the basic physical and chemical properties of manganese slag were analyzed based on X-ray diffraction, X-ray fluorescence spectrum, SEM scanning electron microscope, and particle analysis, the basic engineering characteristics of raw materials of manganese slag and solidified manganese slag mixed with quicklime were analyzed through a compaction test and a CBR test. Finally, based on the Monte Carlo method, the stability of a highway slope in the Guizhou Province of China is simulated by the finite element method, considering the spatial variability of manganese slag material strength parameters. The results show that the solidified manganese slag material can be used as highway subgrade material. This study has important reference significance for manganese slag highway construction projects.

Study of Numerical Simulation in Failure Modes of Waste Dump Slope

2015 ◽  
Vol 1092-1093 ◽  
pp. 748-752 ◽  
Author(s):  
Shao Jie Feng ◽  
Yan Fei Dong ◽  
Shi Guo Sun ◽  
Sheng Lei Kan
Keyword(s):  
Numerical Simulation ◽  
Slope Stability ◽  
Working Conditions ◽  
Failure Modes ◽  
Simulation Method ◽  
Single Step ◽  
Waste Dump ◽  
Numerical Simulation Method ◽  
Dump Slope ◽  
Better Than

Based on the numerical simulation method and a sample slope engineer of waste dump, the failure modes of waste dump slope is analyzed. By means of analyzing working conditions such as different slope angles, single step, many steps, the failure modes of waste dump slope under different working conditions is obtained. The results show that the slope stability of multiple steps waste dump is better than the slope stability of single step waste dump, and the deformation of the slope is small.

scholarly journals Empirical and finite element based stability analysis of highway cut slopes in Uttarakhand Himalayan terrain, India

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Hari Om Singh ◽  
Tariq Anwar Ansari ◽  
T. N. Singh ◽  
K. H. Singh
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Rock Mass ◽  
Stability Analysis ◽  
Slope Stability ◽  
Kinematic Analysis ◽  
Empirical Methods ◽  
Geotechnical Data ◽  
Cut Slopes

AbstractThe present paper deals with different empirical methods and finite element method of slope stability analysis along National Highway (NH)-7, in Uttarakhand, India. The highway is only path in the hilly terrain of Lesser Himalayan for the public transport and have strategic importance due to militaries possession routes. This route is also significant due to having many holistic places, connecting to this. There was numerous landslides happened along the Highway in past due to various natural and anthropogenic activities. Hence, keeping an eye to the socio-economic development of the distant area, slope stability analysis is very crucial along the road cut sections. To identify the vulnerable locations and to collect the geotechnical data, the field investigation was carried out between Shivpuri to Byasi along NH-7 in Garhwal, Uttarakhand. Then geotechnical data was intended followed by rock mass characteristic, kinematic analysis and Qslope stability. Additionally, to review the stability results, numerical simulation (finite element method) was employed and slope mass behavior and failure mechanism of cut slopes were also evaluated. The rock mass characteristic and kinematic analysis illustrate normal and good variety of rock mass mainly wedge mode with flexural toppling of failure. The slope mass rating, continuous slope mass rating and also Qslope stability analysis showed, road cut slopes are critically stable and unstable. The results of different empirical methods shows a decent correlation between them. Further the numerical simulation analysis also evaluates that two cut slopes are unstable and other one is critically stable. This substantial empirical and numerical analysis of cut slopes provides a collective approach to stable and develop the holistic road corridor in Himalayan terrain.

scholarly journals Research Status and Environmental Protection Disposal of Recycled Electrolytic Manganese Residue

2021 ◽  
Author(s):  
Ke Liu ◽  
Chao-qiang Wang ◽  
De-ming Huang ◽  
Qi-cong Huang ◽  
Pei-xin Wang ◽  
...  
Keyword(s):  
Environmental Protection ◽  
Ammonia Nitrogen ◽  
Sintering Behavior ◽  
Standard Requirement ◽  
Industrial Solid Waste ◽  
Electrolytic Manganese ◽  
Electrolytic Manganese Residue ◽  
Leaching Solution ◽  
Manganese Slag ◽  
Chinese Standard

Abstract Electrolytic manganese residue (EMR) is a common industrial solid waste. The ammonia and manganese components contained in it will pollute the soil environment and have potential risks to human health. Under the premise of investigating the production of electrolytic manganese slag and conventional processes, it is found that the traditional harmless treatment methods of electrolytic manganese slag are still mainly lime solidification, cement solidification, and fly ash solidification, and the resource utilization directions such as cement, concrete, non-sintered bricks, road bases, etc. are mainly used. But, EMR contains ammonia nitrogen, and manganese (prone to leaching) that difficult to meeting environmental protection requirements by using general cement cementitious material solidification. Therefore, this study focused on manufacturing new eco-friendly bricks with EMR using calcination process. Specifically, the physical performance and environmental characterization of the sintered bricks were investigated. Furthermore, the sintering behavior and crystallization of all bricks containing EMR were studied using XRD, FT-IR, and SEM. The results showed the EMR leaching solution contained 1256 mg/L and 8120 mg/L of ammonia nitrogen and manganese, respectively, both of them exceeds Chinese standards (GB 8978-1996). Because of EMR is rich in Fe2O3 and K2O, it greatly promotes particle rearrangement and transfer in the EMR system, reducing the sintering temperature. The compressive strength, leaching performance and radioactivity of sintered bricks with EMR all met the state standard requirement for "sintered common bricks" (GB/T 5101-2017) and (GB 8978). The product can be used as bricks of MU20 grade of Chinese standard. The study provides an effective method for the safe and environmentally friendly disposal of EMR.

Analysis about Stability of a Slope

2014 ◽  
Vol 580-583 ◽  
pp. 152-155
Author(s):  
Ya Jun Yin ◽  
Guang Han Xu ◽  
Yong Mei Qian
Keyword(s):  
Numerical Simulation ◽  
Slope Stability ◽  
Ratio Method ◽  
Stability Evaluation ◽  
Slope Ratio ◽  
Geological Conditions ◽  
Slope Ratio Method

Based on the engineering geological conditions of an artificial slope is analyzed using a combination of numerical simulation, the slope ratio method and other methods, the slope stability was evaluated, It has a certain reference to artificial slope stability evaluation that similar to a combination of soil and rock.

Soil Slope Stability Evaluation in Real-Time Based on Displacement Monitor

2013 ◽  
Vol 303-306 ◽  
pp. 782-785
Author(s):  
Ping Jiang ◽  
Jun Ru He
Keyword(s):  
Numerical Simulation ◽  
Slope Stability ◽  
Real Time ◽  
Stable State ◽  
Reduction Factor ◽  
Strength Reduction ◽  
Soil Slope ◽  
Strength Reduction Factor ◽  
Factor Form ◽  
Slope Displacement

The displacement is the most easily exact acquisition parameter in soil slope. In order to master the stable state of slope in real-time and accurately, the evaluation analysis of soil slope stability based on the information of displacement monitor is established. The Strength Reduction Method is used to describe the stable state of slope. According to Neural Network Algorithm, take the data of Finite Element Method numerical simulation, the function relationship between strength reduction factor and slope displacement is formed, which can calculate the Strength Reduction factor form slope displacement, then slope stability is obtained. At last, efficiency and applicability of this method is verified with a group of numerical simulation data.

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