Innovative approach to strata reinforcement in coal mines with reference to evaluation cable bolts shear strength
محل انتشار: مجله معدن و محیط زیست، دوره: 9، شماره: 3
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 286
فایل این مقاله در 13 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JMAE-9-3_013
تاریخ نمایه سازی: 18 تیر 1398
چکیده مقاله:
There is an increasing need to determine accurately the strength properties of tendons for an effective ground control on mines and underground structures as well as on modelling simulations. The strength properties of cables, used as cable bolts, have been evaluated mainly by their ultimate tensile strength, as this kind of test can be carried out in the field as well as in the laboratory. Only recently, there has been a growing interest in cable bolt failures in shear because of the documented field failure evidence. Accordingly, this paper reports various methods of shear testing of rock bolts and cables using different shear testing rigs, some have been developed by the rock bolting research team at the University of Wollongong. A programme of shear testing of a variety of cable bolts marketed in Australia was undertaken, the results of which were reported and conclusions were drawn. It was concluded that plain cable bolts were de-bonded during shearing when compared to spiral cables under the same testing conditions. In addition, both the single shear and double shear testing methodologies will result in the same outcome if there is no de-bonding, and a proper confinement is applied.
کلیدواژه ها:
نویسندگان
N. Aziz
School of Civil, Mining, and Environmental Engineering, University of Wollongong, NSW, Australia
A. Mirzaghorbanali
School of Civil, Mining, and Environmental Engineering, University of Wollongong, NSW, Australia & School of Civil Engineering and Surveying, University of Southern Queensland, QLD, Australia
G. Yang
School of Civil, Mining, and Environmental Engineering, University of Wollongong, NSW, Australia
S. Khaleghparast
School of Civil, Mining, and Environmental Engineering, University of Wollongong, NSW, Australia