An Experimental and Theoretical Study on the Tailings Dam with Geotextile Bags

Li, Qiaoyan; Ma, Guowei; Lu, Yao

doi:10.3390/su15064768

Cited by 6 publications

(5 citation statements)

References 22 publications

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“…Zhou et al 19 studied tailing-geotextile composites, analyzed their permeability and physical properties, and generalized the composite model. Li et al 20 established a stability analysis method based on limit equilibrium theory to simulate the stability of tailings dams using geotextile bags. Zheng et al 21 used basalt fiber to reinforce a tailings dam and improved its stability.…”

Section: Introductionmentioning

confidence: 99%

Seepage stability analysis of geogrid reinforced tailings dam

Du,

Tao,

2024

Sci Rep

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To investigate the influence of a geogrid-reinforced tailings dam on the seepage stability of the dam body, this paper was based on the field test of a reinforced tailings accumulation dam. The study utilized the finite element strength reduction method to simulate the stability of the main dam of the Fengshuigou tailings reservoir under different seepage conditions using ABAQUS software. Additionally, the paper discussed the impact of conventional heightening, dry beach length, and geogrid reinforcement on the position and safety factor of the saturation line of the dam body. The results showed that when the dam body was raised, the saturation line rose by 2.8–5.3 m, resulting in a decrease in the safety factor. The geogrid effectively reduced the height of the saturation line in the tailings dam. In comparison to the unreinforced condition (dam heightening), the saturation line of the tailings dam decreased by 0.9–2.8 m under the local reinforcement condition and by 3.2–12.5 m under the overall reinforcement condition. The geogrid significantly improved the stability of the tailings dam. Furthermore, under the local reinforcement condition, the safety factor of the dam increased by 3.8–5.5%, and under the overall reinforcement condition, it increased by 35.9–42.9%, when compared to the unreinforced condition. Increasing the dry beach length improved the stability of the tailings dam, and under normal working conditions, the safety of the tailings dam was much higher than under the minimum dry beach condition. These results served as a reference for the design of the dam and the new tailings reservoir, laying a foundation for the sustainable development and environmental protection of the tailings pond.

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Section: Introductionmentioning

confidence: 99%

Seepage stability analysis of geogrid reinforced tailings dam

Du,

Tao,

2024

Sci Rep

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“…Soilbags are advantageous for treating solid waste 13 , 14 . Currently, they are widely used in slope protection 15 , 16 , scour control 17 , riverbank protection 18 , waste treatment 19 , foundation treatment 20 – 22 , retaining walls 23 – 25 , road engineering 26 , 27 , and tailing dams 28 – 30 . To realize the resourceful use of soilbags filled with graphite tailings, their load-bearing and deformation characteristics must be fully understood.…”

Section: Introductionmentioning

confidence: 99%

Analysis of compression damage pattern and strength influencing factors in graphite-tailing-filled soilbags

Gao,

Du,

et al. 2024

Sci Rep

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To realize the resourceful use of soilbags filled with graphite tailings, their load-bearing and deformation characteristics must be fully understood. In this study, the following results were obtained by performing geometric testing of water-filled sealing bags and uniaxial compression tests of soilbags filled with graphite tailings. The volume of the soilbag expressed in rectangular form was approximately 0.773 times the actual volume. The types of compression damage to soilbags can be defined as surface damage and overall damage. The surface damage load increases with decreasing filling density and decreases with decreasing soilbag size. Moreover, the higher the tensile capacity of the soilbag material and the lower the friction between the soilbags, the greater the surface damage load. The overall damage load increased with an increase in the tensile strength of the soilbag material and decreased with an increase in the degree of filling; the overall damage load was greater for large-sized soilbags at high degrees of filling. Thus, the existing theoretical calculation method cannot accurately calculate the damage load of soilbags filled with graphite tailings, and the test results deviate from the theoretical calculation results, with the latter showing an increasing damage load with a decreasing filling degree.

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“…The composition of the particle size distribution has a significant impact on the collapse morphology of the dam after failure. An experimental and theoretical study with the Tailings Dam with Geotextile Bag (TDGB) was carried out using the stability analysis method based on the limit equilibrium theory of tailings dams [33]. With respect to the test and analysis results, TDGB has displayed enhanced stability compared to the general tailings dam.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of the Almagrera Tailings Dam with Dry Closure Condition

Morales-Esteban,

Alpañés,

Castillo

et al. 2024

Sustainability

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In light of growing concerns over sustainability, particularly in the wake of environmental disasters like the Aznalcollar dam break, the Spanish authorities have heightened their awareness of issues surrounding ore tailings management.The main aim of this paper is to study the dynamic behavior for the dry closure of the Almagrera dam under the action of an earthquake. This study was carried out with the Plaxis 2D v9.02 program, which uses the finite element (FE) method. The dynamic analysis of the dam was interpreted in terms of deformations, displacements and principal stresses. The construction of the Uniform Seismic Hazard Acceleration Response Spectrum (USHARS) and the selection of real accelerograms for the time-history dynamic calculations is a noted feature of this research. Numerical analyses show that the dam is safe enough because a failure surface has not been formed, although several plastic zones may appear in the dam. The FE study of deformations display that the tailings may attain large deformations, displacements and failure, although this does not jeopardize the safety of the dam where the displacements are smaller than 3 mm. Neither the tailings nor the dam are expected to suffer liquefaction. It was determined that the 0.09 g threshold value is not exceeded in the acceleration-time graphs on the old reservoir field surface, which is the most critical situation.

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An Experimental and Theoretical Study on the Tailings Dam with Geotextile Bags

Cited by 6 publications

References 22 publications

Seepage stability analysis of geogrid reinforced tailings dam

Seepage stability analysis of geogrid reinforced tailings dam

Analysis of compression damage pattern and strength influencing factors in graphite-tailing-filled soilbags

Dynamic Analysis of the Almagrera Tailings Dam with Dry Closure Condition

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