Case Study of Passive Seismic Velocity Tomography in Rock Burst Hazard Assessment During Underground Coal Entry Excavation

Zhu, Guang-an; Li, Dou; Cai, Wu; Min, Zhang; Kong, Yong; Shen, Wei

doi:10.1007/s00603-016-1026-9

Cited by 23 publications

(6 citation statements)

References 19 publications

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“…It is common knowledge that coal-gas outburst and rockburst are the most typical and serious dynamic disasters in deep mining (Lama and Bodziony, 1998;Li et al, 2015;Zhu et al, 2016). It should be noted that the rockburst here is the same object as coal bump in the US and coalburst in Australia.…”

Section: Introductionmentioning

confidence: 89%

The classification and mechanisms of coal-gas compound dynamic disasters: a preliminary discussion

Wang

2019

IJMME

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With the development of deep mining in recent years, there appears a new form of dynamic disaster, which is known as coal-gas outburst and rockburst compound dynamic disaster. It is also called as coal-gas compound dynamic disaster for academia. In this paper, we propose a new classification system of coal-gas compound dynamic disasters. The coal-gas compound dynamic disasters are divided into three types named rockburst-induced outburst dynamic disaster, outburst-induced rockburst dynamic disaster, outburst and rockburst coupling dynamic disaster. And the occurrence mechanism and energy criterion of each kind of compound dynamic disasterThe classification and mechanisms of coal-gas compound dynamic disasters 69 are discussed. We suggest that integrated prevention and control strategies of coal-gas compound dynamic disasters should be adopted by eliminating the gas internal energy and releasing the elastic energy. We also believe that using big data to improve the prediction and control level of coal-gas compound dynamic disasters is the key research direction in the future.

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Section: Introductionmentioning

confidence: 89%

The classification and mechanisms of coal-gas compound dynamic disasters: a preliminary discussion

Wang

2019

IJMME

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“…Gu et al (2013) explored the relation between surrounding rock stress and drilling amount and predicted the coal burst risk in isolated working face by drilling bits. Cai et al (2015), Zhu et al (2016), and Chen et al (2021) investigated the relationship between the tomographic images of P wave velocity and coal burst hazard and believed that coal burst hazard could be detected by passive seismic velocity tomography during longwall face mining and entry excavation. Li et al (2015), He et al (2017), and Wang et al (2020) proposed a static and dynamic stresses superpositionbased risk evaluation method of coal burst to pre-evaluate coal burst risk.…”

Section: Introductionmentioning

confidence: 99%

A Prediction Method of Coal Burst Based on Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation

Zhu

Han

2022

Front. Earth Sci.

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Coal burst has become a worldwide problem that needs to be solved urgently for the sake of coal mine safety production due to its complicated triggering mechanisms and numerous influencing factors. The risk assessment of coal burst disasters is particularly critical. In this work, 15 factors affecting coal burst occurrence are selected from the perspectives of geodynamic environment and geological and mining conditions, and the influence mechanism of each factor on coal bursts is analyzed. An evaluation index system of coal burst risk is put forward. A hierarchical model of coal burst prediction is established, and the weight of each influencing factor to coal burst risk is calculated. Based on the fuzzy comprehensive evaluation method, a coal burst prediction model is established, which can scientifically decompose and simplify the complicated problem and make coal burst prediction and prevention more pertinent and effective. The model is applied to assess the coal burst risk level of a coal mine in Shanxi Province, and the evaluation result is consistent with practical situations. This method considers the influencing factors comprehensively and determines the weight of each factor scientifically compared with other forecasting methods.

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“…Rockburst in mining displays the characteristics of suddenness, uncertainty, instantaneity, and destructiveness, and it is one of the greatest threats to the underground engineering [1][2][3]. Due to the complex geological conditions, China has become one of the worst affected countries by the rockburst and its related geohazards [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Criteria of Underground Rock Structure Failure and Its Implication on Rockburst in Roadway: A Numerical Method

Guo

Zhao

Gao

et al. 2019

Shock and Vibration

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Rockburst in roadway happened along with a large-scale destruction of the surrounding rock. To study the failure laws of the surrounding rock in the process of rockburst in roadway, the evolution behaviors of the plastic zone and the criteria of large-scope failure were studied by using FLAC numerical simulation. Meanwhile, the stress response laws of the plastic zone were studied by loading or unloading in a single direction. The results showed that, in the 20 MPa stress environment, large-scale failure zone would appear when the maximum confining pressure was loaded to 50 MPa or the minimum confining pressure was unloaded to 6 MPa. Loading in the direction of maximum confining pressure or unloading in the direction of minimum confining pressure, when the stresses reached a certain limit, could lead to a large-scale expansion to the failure zone of the surrounding rock a roadway. Meanwhile, the stress response of the plastic zone became more sensitive, which might easily trigger rockburst in roadway. In addition, two sine qua nonstress conditions for rockburst in roadway were determined: high stress ratio and high stress level. This might provide a theoretical basis for the stress source mechanism of roadway rockburst.

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Case Study of Passive Seismic Velocity Tomography in Rock Burst Hazard Assessment During Underground Coal Entry Excavation

Cited by 23 publications

References 19 publications

The classification and mechanisms of coal-gas compound dynamic disasters: a preliminary discussion

The classification and mechanisms of coal-gas compound dynamic disasters: a preliminary discussion

A Prediction Method of Coal Burst Based on Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation

The Criteria of Underground Rock Structure Failure and Its Implication on Rockburst in Roadway: A Numerical Method

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