Research and application of the new support system in high stressed soft rock drift
The new polypropylene fiber concrete bar shell bolting shotcrete support system was studied on the basis of the analysis for the mechanics principle of shell structures and polypropylene fiber concrete.The new polypropylene fiber concrete bar shell bolting shotcrete support system was a new kind of bolting and shotcrete supporting forms.The technique feature is a kind of specially three-dimensional bar-mat reinforcement.It has very high mechanical property and was applied in difficult drift.The model experiment was done by relying on the industrial test and the distortion, destruct shape, developmental rule of the supporting system was examined while the stress and strain distributing rule and also the ultimate load were obtained.Field application shows that without reducing the carrying capacity of supporting the case, and heavy metal stent compared to the steel supporting the form of reduced consumption and the amount of concrete rebound, and has good flexibility, is an excellent soft rock drift jean pressure retaining structure, and has good prospects for widespread application.
high stressed soft rock drift polypropylene fiber concrete bar shell compound support model experiment industrial test
MA Shou-long
Department of Design Institute ,SDIC Xinji Energy Group Co.Ltd., Huainan 232001,China
国际会议
International Mining Conference 2014(2014国际采矿论坛)
安徽淮南
英文
210-213
2014-09-19（万方平台首次上网日期，不代表论文的发表时间）