Designing and Explanation of Reinforcement of Operated High Fills with the Injection of Solidifying Solutions

Ashpiz, Evgeni S.; Lanis, Aleksey; Razuvaev, Denis; Lomov, Petr

doi:10.1016/j.trpro.2022.01.099

Transportation Research Procedia

2022

DOI: 10.1016/j.trpro.2022.01.099

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Designing and Explanation of Reinforcement of Operated High Fills with the Injection of Solidifying Solutions

Evgeni S. Ashpiz

Aleksey Lanis

Denis Razuvaev

et al.

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Cited by 2 publications

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Analysis of Excavation Stability and Reinforcement Treatment of the Cutting Slope under the Influence of Old Goaf

Han

et al. 2022

Applied Sciences

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To analyze the excavation stability and reasonable reinforcement measures of cutting slope with a goaf collapsed roadway and collapsed mining face, the finite element software Midas GTS NX was used to model and analyze the change in the slope stability coefficient under different excavation slope ratios. Combined with the scope of the project land, it is proposed that the slope ratio of grades 1–3 (close to the top of the cut) is 1:1.5, while the slope ratio of grades 4–6 (close to the bottom of the cut) is 1:1, to excavate the slope. During the excavation process, the change in the plastic zone after each level of slope excavation was further analyzed, and the control variable method was used to analyze the influence of the collapsed roadway and the collapsed mining face on the slope stability. We found that the collapsed mining face was one of the main factors affecting the stability of the slope. During the reinforcement of the slope, the reinforcement effects of different schemes were analyzed, and we found that the slope can be stabilized by reinforcement of the third- and fourth-level slopes adjacent to the collapsed mining face. In this study, the old goaf and cutting slope excavation are combined, and the stability of slope excavation with a goaf collapsed roadway and collapsed mining face is analyzed by coupling. This research provides a scientific basis for the stability analysis of cutting slope excavation in old goafs in the future and has great practical engineering significance.

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Analysis of Excavation Stability and Reinforcement Treatment of the Cutting Slope under the Influence of Old Goaf

Han

et al. 2022

Applied Sciences

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Factors Influencing the Stability of a Slope Containing a Coal Seam in a Goaf

Han

2022

Applied Sciences

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Our aim in this study was to analyze the major and minor factors affecting the stability of a slope containing a coal seam in a goaf. Based on engineering experience, we first identified nine factors that may affect slope stability, of which we determined eight that may substantially affect slope stability through a single-factor numerical simulation analysis. Then, we arranged 27 groups of numerical simulation tests with eight factors and three levels with the orthogonal test method, and we determined the ranking of the major and minor influencing factors through a range of variance analyses. The results showed that the influence of each factor was ranked as the roadway width > coal seam position > slope gradient > coal seam thickness > coal seam internal friction angle > coal seam cohesion > coal seam dip angle. Among these, the roadway width, coal seam position, and slope gradient were the major factors affecting slope stability; coal seam thickness, coal seam internal friction angle, coal seam cohesion, and coal seam dip angle were the minor factors. In this study, we combined the goaf and slope containing the coal seam, and we couple analyzed the factors influencing the stability of the slope containing the coal seam in the goaf. Our findings provide a scientific basis for the treatment and protection of slopes containing coal seams in goafs in the future and have a practical engineering importance for the analysis of the excavation stability of road-cutting slopes in goafs.

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Designing and Explanation of Reinforcement of Operated High Fills with the Injection of Solidifying Solutions

Cited by 2 publications

References 6 publications

Analysis of Excavation Stability and Reinforcement Treatment of the Cutting Slope under the Influence of Old Goaf

Analysis of Excavation Stability and Reinforcement Treatment of the Cutting Slope under the Influence of Old Goaf

Factors Influencing the Stability of a Slope Containing a Coal Seam in a Goaf

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