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Mechanical Properties of the Hard Sandstone Fracture Surface under Hydrochemical Corrosion
المؤلفون المشاركون
Xia, Bin-wei
Xu, Ming-xiang
Pan, Chao
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-05-02
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
To realize a quantitative expression of change laws of the fracture surface shear strength with hydrochemical damage and to obtain optimal weakening effect of solution on the fracture surface strength, hard roof sandstone specimens containing hydraulic fracture surfaces from the Tashan Coal Mine located in Datong were subjected to a shear test after corrosion using solutions at different concentrations.
The relational expression between shear strength and porosity of the fracture surface was established, and new damage parameters were introduced to describe the evolution laws of the shear strength of sandstone specimens with change in test conditions.
Results were as follows.
(1) Under sealed hydrochemical environment, corrosion effect on sandstone strengthened, and porosity and roughness gradually increased with increasing solution concentration and soaking time.
(2) At a solution concentration of 3%-10%, shear strength and roughness of the fracture surface initially increased and then decreased.
Hydrochemical solution concentration and action time were important factors that caused strength attenuation of the fracture surface.
(3) When the solution concentration was greater than 3%, the roughness of the fracture surface increased with corrosion time, but its strength showed the tendency to stabilize.
The shear strength of the fracture surface increased with shear displacement at a concentration of 5%.
The study results can provide a new idea for strong strata pressure control through ground hydrofracturing hard roof.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Xia, Bin-wei& Xu, Ming-xiang& Pan, Chao. 2019. Mechanical Properties of the Hard Sandstone Fracture Surface under Hydrochemical Corrosion. Journal of Engineering،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1173560
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Xia, Bin-wei…[et al.]. Mechanical Properties of the Hard Sandstone Fracture Surface under Hydrochemical Corrosion. Journal of Engineering No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1173560
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Xia, Bin-wei& Xu, Ming-xiang& Pan, Chao. Mechanical Properties of the Hard Sandstone Fracture Surface under Hydrochemical Corrosion. Journal of Engineering. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1173560
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1173560
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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