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Determining the Seepage Stability of Fractured Coal Rock in the Karst Collapse Pillar
المؤلفون المشاركون
Pan, Hongyu
Zhang, Xiufeng
Zhang, Tianjun
Pang, Mingkun
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-07-25
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
The karst collapse pillar (KCP) is a common geological structure in the coal mines of northern China.
KCPs contain many fractured coal rocks, which can easily migrate under the action of high-pressure water.
The destruction or instability of the cementation structure between the rocks can directly induce coalmine water-inrush accidents.
To study the seepage stability of cemented and fractured coal rock under triaxial pressures, a self-designed triaxial seepage testing system was used and the permeability k and non-Darcy factor β of the cemented and fractured coal rock were tested.
Furthermore, the 1D non-Darcy seepage equations were used to calculate the evolution criteria of the seepage loss stability.
The results show the following: (1) The cemented structure in the KCP under the triaxial pressures can be easily destroyed.
The damaged coal and rock body mainly exists in bulk form, and the permeability depends mainly on the effective stress of the particles.
(2) The seepage process in the KCP structure is a combination of pore flow, fracture flow, and pipe flow, and the transition of the seepage state is closely related to the change in the magnitude of β.
(3) Under the long-term effect of confined underground water, the migration of small fractured particles in the KCP will increase the structural porosity.
If the parameter βk2 reaches the threshold value, the seepage system will evolve into a pipeline flow state, eventually causing a water-inrush accident.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhang, Tianjun& Pang, Mingkun& Zhang, Xiufeng& Pan, Hongyu. 2020. Determining the Seepage Stability of Fractured Coal Rock in the Karst Collapse Pillar. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121030
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhang, Tianjun…[et al.]. Determining the Seepage Stability of Fractured Coal Rock in the Karst Collapse Pillar. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1121030
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhang, Tianjun& Pang, Mingkun& Zhang, Xiufeng& Pan, Hongyu. Determining the Seepage Stability of Fractured Coal Rock in the Karst Collapse Pillar. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121030
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1121030
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