Water-inrush Risk through Fault Zones with Multiple Karst Aquifers Underlying the Coal Floor: A Case Study in the Liuzhuang Coal Mine, Southern China

Zhang, Jian; Guo, Liangliang; Mu, Wenping; Liu, Shouqiang; Zhao, Dexing

doi:10.1007/s10230-021-00799-7

Cited by 9 publications

(3 citation statements)

References 28 publications

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“…FLAC3D fluid-structure coupling model is used to analyze the law of floor instability under the influence of mining and confined aquifer. In the FLAC3D fluid-structure coupling module, the rock mass is regarded as a porous medium, and the fluid meets Darcy's law and Biot's classical seepage equation (Duan and Zhao, 2021;Zhang et al, 2021;Shi et al, 2021). After entering the fluid-structure coupling calculation mode, the reasonable selection of rock mass and fluid seepage parameters has a great impact on the calculation results.…”

Section: Test Methodsmentioning

confidence: 99%

“…Many scholars have done a lot of research on the methods of filling mining to prevent water inrush disasters. For example, Peng (Peng et al, 2021) used the high water material filling method to replace the strip coal pillar on the confined aquifer, analyzed the influence of filling body stability and floor failure, and finally verified the theoretical feasibility of this technology; Du (Du et al, 2021) analyzed the failure law and evolution characteristics of paste filled floor, and predicted the failure range and water inrush of the floor after mining Jia (Jia et al, 2021) quantitatively analyzed the control effect of strip filling replacement mining on surrounding rock deformation of working face and water diversion of the aquifer and Zhang (Zhang et al, 2021) used the methods of similarity simulation, theoretical research, and field practice to study the relationship between support and surrounding rock, ground pressure law of filling face and floor failure law under the condition of gangue filling mining. www.mining.org.tr…”

Section: Introductionmentioning

confidence: 92%

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Study on floor instability law of cemented filling mining above a confined aquifer

Wang

2023

Bilimsel Madencilik Dergisi

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To solve the problem of floor water inrush in the process of coal mining on a confined aquifer and study the law of floor instability, a cemented filling mining method is proposed in the paper. Using river sand and cement as filling materials, the cementitious material with a concentration of 75% and cement content of 15% has the best flow and mechanical properties. Based on the elastic half-space theory and the bearing characteristics of the backfill, the mechanical model of floor stability is established, the critical criterion of floor instability is proposed, and the relationship between the failure depth of floor and the location and pressure of confined aquifer is obtained. The numerical simulation test scheme is designed, and the FLAC3D fluid-structure coupling element is used to explore the instability characteristics of the floor in the mining process. The research results show that the failure depth of the floor will gradually decrease with the increase of the strength of filling materials, the increase of aquifer distance, and the decrease of water pressure. The research results provide a useful reference for the study of safe mining of coal resources on a confined aquifer.

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Section: Test Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 92%

Study on floor instability law of cemented filling mining above a confined aquifer

Wang

2023

Bilimsel Madencilik Dergisi

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show abstract

“…Lan et al [16] revealed the relationship amid fault construction and mining engineering by classifying the fault construction forms of rock bursts and establishing geological structure models. Zhang et al [17] investigated the danger dimension of water inrush from faults at different locations by establishing a fluid-structure coupling analysis model and a numerical model. Wang et al [18] verified the characteristics of roof stress sudden change under the joint action of double faults employing field monitoring and similar simulation and revealed the mechanism of irregular fracture of roof strata.…”

Section: Introductionmentioning

confidence: 99%

Research on the Deformation Law and Stress Distribution Characteristics of Overburden under the Influence of Multiple Faults

Qi,

Yu,

et al. 2023

Advances in Civil Engineering

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Taking the geological conditions of a coal mine in Liupanshui City, Guizhou Province, as the background. The fracture law of the roof in the coal face and the height of the “Two zones” were obtained through theoretical analysis and empirical formula calculation, and the results were verified using similar simulation experiments. Through numerical simulation were researched the stress distribution characteristics of the overlying strata on the working face under the influence of multiple faults. The results showed that in the early stage of mining, F1 undergoes activation under the influence of the main roof weighting, leading to an increase in the degree of plastic damage to the coal seam and strata behind the working face, causing a redistribution of the behind abutment pressure. Finally, under the influence of the F1 barrier effect, the vast majority of the behind abutment pressure is transferred to the lower strata of F1, leading to a continuous increase in stress concentration there. But as the working face continues to advance, the blocking effect of the roof plastic zone above the goaf on the transmission of the behind abutment pressure of the working face begins to appear and continues to increase, leading to a decrease in the peak stress at the lower strata of F1. The stress change process on the F2 side is similar to that on the F1 side, the front abutment pressure is initially distributed in the strata in front of the working face, but as the activation degree of F2 continues to intensify, it gradually shifts to the lower strata of F2, and ultimately the majority of the front abutment pressure is borne by the lower strata of F2.

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Hydrochemical characteristics, cross-layer pollution and environmental health risk of groundwater system in coal mine area: a case study of Jiangzhuang coal mine

Cheng,

Yin,

Dong

et al. 2024

Environ Geochem Health

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Water-inrush Risk through Fault Zones with Multiple Karst Aquifers Underlying the Coal Floor: A Case Study in the Liuzhuang Coal Mine, Southern China

Cited by 9 publications

References 28 publications

Study on floor instability law of cemented filling mining above a confined aquifer

Study on floor instability law of cemented filling mining above a confined aquifer

Research on the Deformation Law and Stress Distribution Characteristics of Overburden under the Influence of Multiple Faults

Hydrochemical characteristics, cross-layer pollution and environmental health risk of groundwater system in coal mine area: a case study of Jiangzhuang coal mine

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