Water and mud inrush hazard in underground engineering: Genesis, evolution and prevention

Xue, Yiguo; Kong, Fanmeng; Li, Shucai; Qiu, Daohong; Su, Maoxin; Li, Zhiqiang; Zhou, Binghua

doi:10.1016/j.tust.2021.103987

Cited by 76 publications

(17 citation statements)

References 236 publications

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“…Numerical Veri cation. For submarine geological condition, there are more than 20 kinds of geo-disasters that can cause damage and threaten engineering safety [30]. In general, the most dangerous geo-disasters are submarine faults and landslides.…”

Section: Verification and Discussionmentioning

confidence: 99%

Observation System Optimization of Offshore Acoustic Exploration for Estimating Submarine Geological Structures via Directivity Analysis

Lian

Zhou

et al. 2022

Advances in Civil Engineering

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To better understand the shallow sea geological information and avoid the risk caused by potential geo-disasters, the efficient offshore geological exploration methods are required. Better detection resolution can be obtained by using a spark source. As the foundation, the observation system plays an important role for geological detection. The influence of the variation of the parameters of the observation system on the detection accuracy is analysed theoretically. Then, the numerical simulations based on the finite difference method was applied, and imaging characteristics of observation system with different parameter were studied. For submarine acoustic exploration, the spark source with frequency over 200 Hz can obtain the clear reflections for geological interpretation; besides, the receiver array with the interval of 5 m–10 m helps to obtain better wave signals when the buried depth of a geological body is less than 300 m, and the width is more than 10 m. Based on numerical simulations, the observation system was optimized and designed. The results of numerical examples show that the accurate position information of the structure can be obtained by using the observation system proposed in this paper. Different imaging performances are obtained by adjusting the parameters of the observation system. On this basis, combined with directivity analysis, the optimal observation system parameters are proposed. Finally, the proposed observation system is used to image the fault model. The research results of this paper can provide reference for the observation system design in similar projects.

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Section: Verification and Discussionmentioning

confidence: 99%

Observation System Optimization of Offshore Acoustic Exploration for Estimating Submarine Geological Structures via Directivity Analysis

Lian

Zhou

et al. 2022

Advances in Civil Engineering

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“…On January 30, 2015, in the mining process of the 866-1 working face of the Zhuxianzhuang Coal Mine, water-conducting pathways were connected to the aquifer above the roof under the influence of mining disturbance, water inrush was caused from the working face roof. This accident resulted in 7 deaths, working face abandonment, and a direct economic loss of 12 million CNY (Xue et al 2021). On April 10, 2021, during the excavation of the B4W01 ventilating tunnel of Fengyuan Coal mine, the groundwater in old goaf broke through the water barrier, causing flooding of the main and secondary inclined shafts, pit bottom and other areas, which resulted in 21 deaths and a direct economic loss of 70 million CNY.…”

Section: Introductionmentioning

confidence: 99%

A state-of-the-art review on rock seepage mechanism of water inrush disaster in coal mines

Duan

Zhang

et al. 2022

Int J Coal Sci Technol

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Water inrush is one of the most dangerous disasters in coal mining. Due to the large-scale mining and complicated hydrogeological conditions, thousands of deaths and huge economic losses have been caused by water inrush disasters in China. There are two main factors determining the occurrence of water inrush: water source and water-conducting pathway. Research on the formation mechanism of the water-conducting pathway is the main direction to prevent and control the water inrush, and the seepage mechanism of rock mass during the formation of the water-conducting pathway is the key for the research on the water inrush mechanism. This paper provides a state-of-the-art review of seepage mechanisms during water inrush from three aspects, i.e., mechanisms of stress-seepage coupling, flow regime transformation and rock erosion. Through numerical methods and experimental analysis, the evolution law of stress and seepage fields in the process of water inrush is fully studied; the fluid movement characteristics under different flow regimes are clearly summarized; the law of particle initiation and migration in the process of water inrush is explored, and the effect of rock erosion on hydraulic and mechanical properties of the rock media is also studied. Finally, some limitations of current research are analyzed, and the suggestions for future research on water inrush are proposed in this review.

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“…At present, the key problem why mine water inrush disasters are difficult to forecast and control is that the geological conditions and catastrophic evolution process are extremely complex, which may cause that the catastrophic evolution mechanism of water inrush has not been systematically revealed. Through the case analysis of mine water inrush disasters in recent years, it is shown that the seepage instability of filling medium in fault, karst pipeline is one of the main causes of water-mud inrush disasters in coal mine [12][13][14] and most of them occur in the high permeability sandy-clay filling medium. Under the action of strong seepage, the continuous erosion of the filling medium makes the seepage channel appear, gradually extends then through, and the stability of the filling medium is constantly reduced, finally resulting in the occurrence of mine water inrush disasters [15,16].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Seepage Characteristics of Filling Structures in Deep Roadway

Shi

Zhu

Cao³

et al. 2022

Geofluids

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In order to study the seepage failure mechanism of roadway filling medium consisting of cohesive soil under complex hydrogeological conditions, a large-scale triaxial stress-seepage test system was utilized to investigate the influence of kaolin content and seepage loading rate on the seepage characteristics of filling medium. Through the analysis on the variation rules of sand loss and particle size distribution, the seepage characteristics and whole process of seepage instability of filling medium were explored in depth. It is concluded that (1) The seepage instability process of filling medium can be categorized into three stages: the initiation loss of fine clay, the accelerating loss of soil, and the stable status of soil loss. (2) The seepage failure process rate is proportional to the seepage loading rate and inversely proportional to the content of kaolin. (3) The kaolin and sand content of remaining mixture presented initial>bottom>middle>top status. The research results have guidance value for exploring the instability evolution mechanism of filling medium in deep roadway.

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Water and mud inrush hazard in underground engineering: Genesis, evolution and prevention

Cited by 76 publications

References 236 publications

Observation System Optimization of Offshore Acoustic Exploration for Estimating Submarine Geological Structures via Directivity Analysis

Observation System Optimization of Offshore Acoustic Exploration for Estimating Submarine Geological Structures via Directivity Analysis

A state-of-the-art review on rock seepage mechanism of water inrush disaster in coal mines

Experimental Study of Seepage Characteristics of Filling Structures in Deep Roadway

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