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A Supporting Design Method When Longwall FaceStrides across and Passes through a Roadway
المؤلفون المشاركون
Qiao, Qing
Li, Xiaobin
Li, Xinyuan
Li, YiWei
Gong, Haoran
Pan, Weidong
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-10-19
دولة النشر
مصر
عدد الصفحات
15
الملخص EN
In coal underground mining, situation of longwall face striding across (SAR) or passing through roadway (PTR) is very common, especially in an inclined coal seam mining.
A roadway supporting design method, consisting of a model using to determine the minimal rock strata thickness and a segmental supporting scheme, is developed.
In addition, to represent the mechanical behaviour of the caved material authentically, an elastic model was developed.
The results showed that the elastic model has a good agreement with the caved material mechanical behaviours at a relatively lower stress condition.
By using a FDEM method, a real case in Xutuan coal mine is studied.
Compared with the process without backfill, the z-displacement of cross-cut roof decreased shapely after backfilling, with a maximum z-displacement, decreases from 0.76 m to 0.13 m and from 0.39 m to 0.064 m in PTR and SAR section, respectively.
Therefore, the possibility of fall of ground (FOG) and crushing accidents can be reduced effectively with backfilling material of wood cribs.
And the maximum subsidence (SAR section side) of face floor is 0.16 m, which is small enough to ensure normal production.
The results of this study are likely to be useful as a reference for the safe and efficient mining of coal resources under similar conditions.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Pan, Weidong& Li, Xinyuan& Li, YiWei& Li, Xiaobin& Qiao, Qing& Gong, Haoran. 2020. A Supporting Design Method When Longwall FaceStrides across and Passes through a Roadway. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1129463
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Pan, Weidong…[et al.]. A Supporting Design Method When Longwall FaceStrides across and Passes through a Roadway. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1129463
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Pan, Weidong& Li, Xinyuan& Li, YiWei& Li, Xiaobin& Qiao, Qing& Gong, Haoran. A Supporting Design Method When Longwall FaceStrides across and Passes through a Roadway. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1129463
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1129463
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