An Integrated Evaluation Method for the Grouting Effect in Karst Areas

Jin, Qing; Bu, Zehua; Pan, Dongdong; Li, Haiyan; Li, Zhaofeng; Zhang, Yichi

doi:10.1007/s12205-021-1864-1

Cited by 15 publications

(5 citation statements)

References 54 publications

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“…The new WEMS can effectively complete the long-distance plugging of karst pipelines. (5) The relationship between the shear strength and magnetic field strength, plugging length, and slurry ratio was established by analyzing the force of WEMS in the process of grouting plugging.…”

Section: Discussionmentioning

confidence: 99%

“…Surge water has become one of the most common geology dangers in tunnel and subterranean construction [1][2][3][4]. The most common and successful method of dealing with surge water disasters is grouting [5,6]. Many scholars have conducted extensive research on the theory and technology of grouting in water-rich and weak peripheral rocks, fault fracture zones, and so on, yielding numerous valuable scientific research results [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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An Experimental Study on the Sealing Mechanism of a Karst Pipeline by Dynamic Water Grouting

Liu,

Wang

et al. 2024

Applied Sciences

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Aiming at the problem of water burst plugging in karst pipelines, in this paper, a new type of waterborne epoxy resin magnetic self-polymerization grouting material (WEMS) suitable for karst pipeline water burst plugging was developed, and a visual simulation test device for karst pipeline water burst grouting plugging was designed and built. Through the orthogonal test of grouting plugging, the influence of different factors on the effect of grouting plugging was analyzed, and the shear mechanism of magnetic slurry magnetization plugging was also analyzed. The results showed that (i) the best grouting sealing performance was achieved when the new WEMS had a water–cement ratio of 0.35–0.55 and Fe3O4 powder misery of 20–40%. (ii) The primary relationship between the factors affecting the dynamic water flow rate and slurry retention is Fe3O4 power ratio > plugging length > water–cement ratio. (iii) The relationship equation was established between the shear strength of magnetic self-polymerizing slurry and the magnetic field strength, blocking length, and slurry ratio.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Sealing Mechanism of a Karst Pipeline by Dynamic Water Grouting

Liu,

Wang

et al. 2024

Applied Sciences

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“…Li et al [ 11 ] constructed evaluation models to assess the construction safety risks of highway bridges. Jin et al [ 12 ] conducted an evaluation of grouting effectiveness in karst areas, considering the construction technology, apparent parameters, observational data from inspection holes and geophysical exploration techniques. On the other hand, prior to construction, risk reduction is achieved through the detection of karst features with the aim of mitigating construction risks.…”

Section: Literature Reviewmentioning

confidence: 99%

Research on programmatic multi-attribute decision-making problem: An example of bridge pile foundation project in karst area

Lu,

Nie,

Zhou

et al. 2023

PLoS ONE

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The selection of construction plans for adverse geological conditions frequently encountered during the construction of bridge pile foundations will have a significant impact on the project’s progress, quality, and cost. There is a need for the optimization of multi-attribute decision-making methods, considering the subjectivity in in weight allocation and the practical implementation obstacles. In this study, an evaluation framework for pile foundation construction schemes in karst areas was established. The directed graph and Bellman-Ford algorithm are employed to improve the Analytic Network Process (ANP) in the systematic structure, thereby calculating the subjective weights of various indicators. Simultaneously, based on the concept of dynamic weighting, a multiple linear regression is introduced for analyzing the weights of similar projects, resulting in the derivation of universal weights for the primary indicators within the evaluation system. The combination weights are subsequently determined through the weighted average of the two types of weights. Finally, the comprehensive scores of alternative schemes are computed using the grey-fuzzy evaluation method to enable decision-making in scheme selection. Cloud model, ELECTRE-II, and VIKOR methodologies were utilized for the comparison of results. Combining with a case study of a bridge project in karst development area in southern China, the findings indicate that the improved ANP method possesses practical applicability and yields effective computational results. The introduction of universal weights serves to ameliorate the inherent subjectivity in weight allocation. The pile foundation quality achieved using the optimal construction plan is classified as Class I, which prove the feasibility of the model.

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“…The fuzzy comprehensive evaluation method is based on fuzzy mathematics and has been widely applied to handle fuzzy problems. Jin et al [22] used the analytic hierarchy process (AHP) cloud model and the fuzzy comprehensive evaluation method to assess the influencing effects of a grouting project at a Pingnan limestone mine. This combination of methods fully considers the ambiguity and randomness of indicator factors, thereby improving the reliability of the results.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Effects of Pre-Grouting in Combination with Group Holes on the Risk of Water Inrush through Coal Seam Floors

Tian,

Gao,

Yue

et al. 2024

Water

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Coal mine pre-grouting is an important means to reduce the risk of coal seam floor water inrush, and the scientific evaluation of its effects is an important basis for the formulation of water control countermeasures and the realization of safe mining. This paper takes the Guhanshan Mine 15,051 working face grouting project as the research object and selects the grouting volume, the length of the meter grouting, the dry material value in tons of water, the complexity of faults, and the threat of water inrush at the working face as the index factors with which to evaluate the effectiveness of the grouting. The geological structure is quantified by fractal theory. The subjective, objective, and comprehensive weights of the index factors are determined by the analytic hierarchy process, the CRITIC method, and the combination weighting method. The grouting effect on the working face is quantitatively identified by the fuzzy variable set comprehensive evaluation model, and zoning is carried out. The research shows that the areas with optimal, good, qualified, and poor grouting effect at the 15,051 working face account for 4.66%, 74.34%, 21.00%, and 0% of the working face area, respectively, and the proportion at the level of qualified or above accounts for 100%. The safety results at the 15,051 working face prove that the selected evaluation index factors are representative, the established model is reliable, and the evaluation results are in line with actual conditions.

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An Integrated Evaluation Method for the Grouting Effect in Karst Areas

Cited by 15 publications

References 54 publications

An Experimental Study on the Sealing Mechanism of a Karst Pipeline by Dynamic Water Grouting

An Experimental Study on the Sealing Mechanism of a Karst Pipeline by Dynamic Water Grouting

Research on programmatic multi-attribute decision-making problem: An example of bridge pile foundation project in karst area

Evaluation of the Effects of Pre-Grouting in Combination with Group Holes on the Risk of Water Inrush through Coal Seam Floors

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