Modeling and analysis of mining subsidence disaster chains based on stochastic Petri nets

Chen, Yuejuan; Zhang, Jin; Zhou, Anchao; Yin, Bo

doi:10.1007/s11069-018-3190-6

Cited by 18 publications

(10 citation statements)

References 18 publications

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“…Land subsidence causes substantial ecological and environmental problems, such as water and soil erosion, aggravation of land degradation, and declines in soil quality [8,9,10]. The soil structure and soil properties are both disturbed by land subsidence, which increases the average internal fraction angle value and reduces the average values of water and organic matter in soil [11].…”

Section: Introductionmentioning

confidence: 99%

Land Subsidence in a Coal Mining Area Reduced Soil Fertility and Led to Soil Degradation in Arid and Semi-Arid Regions

Zhang

Ruan

et al. 2019

IJERPH

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Underground coal mining in western China causes heavy land subsidence and alters the soil ecology. However, the effects of land subsidence on soil fertility are not currently known, and the key factors governing its impact remain unclear in sandy land. We investigated the effects of land subsidence induced by underground mining on the soil quality in western China. Soil samples were collected at 0–15 cm and 15–30 cm from control and subsidence areas in three coal mines. The results showed that the soil water content (SWC), clay and silt percentage, total nitrogen (TN), dissolved organic carbon (DOC), ammonia nitrogen (NH4+-N), nitrate nitrogen (NO3--N), available phosphorus (AP), and available potassium (AK) of the subsidence areas were significantly lower than those of the control areas. The saccharase, urease, and alkaline phosphatase activities in the subsidence areas decreased compared to those in the control areas, while the sand percentage of soil tended to increase. Soil nutrient contents, bacterial quantities, and activities of soil enzymes were positively correlated with SWC. Redundancy analysis (RDA) showed that the soil particle size distribution, SWC, and electrical conductivity (EC) were the major environmental factors driving changes in soil properties. These results indicated that land subsidence induced by coal mining caused losses in surface soil water and nutrients, and ultimately led to soil quality degradation. Therefore, the reclamation of mining subsidence land might be necessary, especially in arid and semi-arid areas.

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Section: Introductionmentioning

confidence: 99%

Land Subsidence in a Coal Mining Area Reduced Soil Fertility and Led to Soil Degradation in Arid and Semi-Arid Regions

Zhang

Ruan

et al. 2019

IJERPH

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“…e consumption of coal, which is a conventional fuel, has continuously increased in recent decades. However, intensive and massive coal mining brings a series of severe social and environmental problems, such as land subsidence, building damage, ground fissures, and landslides [1][2][3]. Among these problems, coal mining subsidence considerably impacts the environment and societies.…”

Section: Introductionmentioning

confidence: 99%

Research on the Stability Evaluation Model of Composite Support Pillar in Backfill-Strip Mining

Zhu

Guo

Liu

et al. 2020

Mathematical Problems in Engineering

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Backfill-strip mining, which combines the advantages of strip mining and backfill mining, is proposed to overcome high cost and shortage of filling materials in coal mines at present. The composite support pillar (CSP) is a combined support pillar of the filling body and coal pillar for supporting the overlying strata and achieving subsidence control. The stability of CSP is the key to the success of subsidence control in backfill-strip mining engineering. A stability evaluation model of the CSP mechanical model was proposed. First, the lateral stress between the coal pillar and filling body is calculated in consideration of their interaction relation in CSP based on the earth pressure theory. Then, the width calculation models of the broken and plastic zones of three types of CSPs are established on the basis of limit equilibrium theory. On this basis, the mathematical model of the safety design width of the three types of CSPs is proposed to ensure the stability of CSP. Meanwhile, an engineering case of stability width design of CSP is shown. This study can provide theoretical reference and technical support for the engineering design of backfill-strip mining.

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“…Critical air speed and oxygen concentration values in the caving goaves were determined for the actual conditions of exploitation. 11,12,27 Examples of this type of software include M-Fire, Vent Fire (VF), Vent-PC, ventilation simulation software (VSS), the mine ventilation simulation system and cross fire. A remote monitoring system was developed for ventilation in coal mines, which simulates the ventilation in real time, and controls the airflow remotely.…”

Section: Introductionmentioning

confidence: 99%

“…For calculations, ANSYS fluent software based on finite volume method that enables very precisely to determine the air and parameters at any point of tested goaf. Critical air speed and oxygen concentration values in the caving goaves were determined for the actual conditions of exploitation 11,12,27 . Examples of this type of software include M‐Fire, Vent Fire (VF), Vent‐PC, ventilation simulation software (VSS), the mine ventilation simulation system and cross fire.…”

Section: Introductionmentioning

confidence: 99%

Study on fire smoke flow characteristics in the ventilation network and linkage control system in coal mines

et al. 2020

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Modeling and analysis of mining subsidence disaster chains based on stochastic Petri nets

Cited by 18 publications

References 18 publications

Land Subsidence in a Coal Mining Area Reduced Soil Fertility and Led to Soil Degradation in Arid and Semi-Arid Regions

Land Subsidence in a Coal Mining Area Reduced Soil Fertility and Led to Soil Degradation in Arid and Semi-Arid Regions

Research on the Stability Evaluation Model of Composite Support Pillar in Backfill-Strip Mining

Study on fire smoke flow characteristics in the ventilation network and linkage control system in coal mines

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