Risk assessment of water inrushes from bed separations in Cretaceous strata corresponding to different excavation lengths during mining in the Ordos Basin

He, Jianghui; Qiao, Wei; Yang, Zhi; Wang, Qiqing

doi:10.1080/19475705.2021.1950220

Cited by 10 publications

(3 citation statements)

References 31 publications

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“…Zhang et al proposed a variable weight model to achieve the risk assessment of water inrush from the floor in the Taoyang Coal Mine 8 . He et al proposed a bedseparation water inrush (BSWI) method to assess the risk of water inrush from the bottom layer of the Cretaceous strata in the Ordos Basin 9 . Wang et al proposed a hazard identification method based on a fault tree analysis, which improved the risk control and prevention of mine water inrush accidents 10 .…”

Section: List Of Symbols Imentioning

confidence: 99%

WITHDRAWN: Study on multi-constraint and multi-objective optimization layout method of monitoring network for mine water inrush

2022

Preprint

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Section: List Of Symbols Imentioning

confidence: 99%

WITHDRAWN: Study on multi-constraint and multi-objective optimization layout method of monitoring network for mine water inrush

2022

Preprint

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“…Zhang et al proposed a variable weight model to achieve the risk assessment of water inrush from the floor in the Taoyang Coal Mine 8 . He et al proposed a bed-separation water inrush (BSWI) method to assess the risk of water inrush from the bottom layer of the Cretaceous strata in the Ordos Basin 9 . Wang et al proposed a hazard identification method based on a fault tree analysis, which improved the risk control and prevention of mine water inrush accidents 10 .…”

Section: Introductionmentioning

confidence: 99%

A multi-constraint and multi-objective optimization layout method for a mine water inrush monitoring network

Zhao

et al. 2023

Sci Rep

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Mine water inrush can cause property losses and casualties, but current theoretical and technological approaches cannot accurately predict such events. Through the networked deployment of water level sensors along a mine roadway, a mine water inrush monitoring network was developed, and a multi-constraint and multi-objective optimal deployment method was established. By setting practical constraints of the mining area, water inrush risk level, and installation at specified locations, and considering two objective functions of minimum total cost and minimum average monitoring time, a mathematical model was established. The non-dominated sorting genetic algorithm II (NSGA-II) was designed to solve the model. The method temporally and spatially optimized the network, which was then verified in the Beiyangzhuang coal mine in north China. The average response time of the monitoring network was 916 s using only 28 water level sensors. The higher the water inrush risk level, the shorter the monitoring network response time. Under the 2, 3, and 4 risk levels, the network’s response time to simulated water inrush accidents was less than 3000, 2100, and 900 s, respectively. The multi-constraint and multi-objective optimization layout method further enhanced the effectiveness of the network, providing a novel system for the early warning of mine water inrush.

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“…Whether it is bed separation flood or bed separation zone filling, it is necessary to master the development position of the bed separation zone. The development position of bed separation is distinguished and predicted from the perspective of theoretical analysis [9][10][11]. Literature [12][13][14][15] monitors the development of fracture zone and bed separation development position on site through borehole television and other methods.…”

Section: Introductionmentioning

confidence: 99%

Research on Formation Mechanism and Evolution Pattern of Bed Separation Zone during Repeated Mining in Multiple Coal Seams

Yang

et al. 2022

Geofluids

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Mastering the formation mechanism and dynamic evolution pattern of bed separation zone during repeated mining is the key to the success or failure of separation grouting injection technology. Taking a mine in Ningdong as the engineering background, using the research methods of theoretical analysis, numerical simulated, and field measurement, four overburden structure models of single or multiple key strata with repeated mining and single or multiple key strata without repeated mining were constructed. The evolution pattern of bed separation zone was studied from four aspects: bed separation zone development mechanism, formation position, development form, and change of clearance. The results showed that when a single key stratum of repeated mining exists between coal seams, it is difficult to form a large separation area because there is no key stratum during the upper coal mining, and a separation area will be formed below the key stratum when mining the lower coal. When the key stratum exists above all coal seams, a large separation zone will be formed under the key stratum when the upper coal is mined. When mining the lower coal, when the coal seam spacing is less than 4 times of the mining height of the lower coal, the crack will penetrate the upper coal floor. If the key stratum is not completely broken, secondary separation may occur. When multiple key strata are all located above all coal seams, there will be bed separation zone under the high-level key stratum. When multiple key strata and coal seams are distributed at intervals, the separation below the high-level key stratum during upper coal mining and the separation below the low-level key stratum during lower coal mining are formed. Because the high-level key stratum bends and sinks after being affected by the mining of coal 1, the clearance of bed separation during mining coal 2 is slightly less than that during mining coal 1, which is contrary to the pattern that the greater the bed separation clearance increases with the increase of mining height.

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Risk assessment of water inrushes from bed separations in Cretaceous strata corresponding to different excavation lengths during mining in the Ordos Basin

Cited by 10 publications

References 31 publications

WITHDRAWN: Study on multi-constraint and multi-objective optimization layout method of monitoring network for mine water inrush

WITHDRAWN: Study on multi-constraint and multi-objective optimization layout method of monitoring network for mine water inrush

A multi-constraint and multi-objective optimization layout method for a mine water inrush monitoring network

Research on Formation Mechanism and Evolution Pattern of Bed Separation Zone during Repeated Mining in Multiple Coal Seams

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