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Geotechnical and Geological Engineering

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16.04.2018 | Original Paper

Study on the Fracture of Hard and Thick Sandstone and the Distribution Characteristics of Microseismic Activity

verfasst von: Quansen Wu, Jinquan Jiang, Quanlin Wu, Yanchao Xue, Peng Kong, Bin Gong

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 6/2018

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Abstract

The movement of hard and thick key stratum during underground coal extraction via longwall top coal caving differs from that of other types of overlying strata. Therefore, numerous problems such as roadway instability, rock burst and strong mining-induced mine seismicity will be encountered as a result of the fracture of a hard and thick key stratum. The key to controlling the behavior of strata is to understand the movement and fracture pattern of the hard and thick key stratum. Taking the 103_up02 working face of Baodian coal mine as a case study in this study, according to the in situ measured microseismic data, the rule of fracture of overlying hard and thick sandstone caused by working face mining is studied, and the mechanism of dynamic pressure impact induced by hard and thick strata fracture is explained. Finally, the dynamic pressure control technology is put forward. The research results are of great significance for coal mining under hard and thick strata, mastering the fracture rules of hard and thick strata and predicting dynamic disasters.

Vorheriger Artikel State-of-the-Art Modelling of Soil Behaviour Under Blast Loading

Nächster Artikel Deep Cement Mixed Walls with Steel Inclusions for Excavation Support

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Titel: Study on the Fracture of Hard and Thick Sandstone and the Distribution Characteristics of Microseismic Activity
verfasst von: Quansen Wu
Jinquan Jiang
Quanlin Wu
Yanchao Xue
Peng Kong
Bin Gong
Publikationsdatum: 16.04.2018
Verlag: Springer International Publishing
Erschienen in: Geotechnical and Geological Engineering / Ausgabe 6/2018
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-018-0538-3

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