Experimental Investigation of the Anchoring Effect of Two Different Types of Rock Bolts on Fractured Rock

doi:10.1155/2019/9290318

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Experimental Investigation of the Anchoring Effect of Two Different Types of Rock Bolts on Fractured Rock
	Xu, Rongchao ; Zhou, Hui
刊名	ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
	2019
期号	-页码:-
ISSN号	1687-8434
DOI	10.1155/2019/9290318
英文摘要	A deep understanding of the anchoring effect of rock bolts on fractured rock is essential for support design in rock engineering. In this paper, cubic specimens containing a single preexisting flaw with different inclination angles were made by high-strength gypsum; uniaxial compression tests were conducted on bolted and unbolted specimens to study the anchoring effect of the fully bonded bolt and the prestressed bolt on fractured rock. The mechanical parameters and failure characteristics of bolted and unbolted specimens were compared and analyzed in detail. The results indicated that both the prestressed and fully bonded bolt had a significant influence on the mechanical behavior of fractured rock. The average value of E, sigma(i), sigma(p), and sigma(r) of bolted specimens all increased due to the effect of the rock bolt. The increase degree was the greatest for the specimens with flaw inclination angle of 45 degrees. The increase in residual strength, sigma(r), was the most significant among all the mechanical parameters. The mechanical parameters of specimens anchored with a prestressed bolt increased with an increase in pretension stress. Besides, the reinforcement effect of the two types of rock bolts was different for different mechanical parameters. The bolted specimens displayed different failure characteristics compared to the unbolted specimens. Variation of tension stress in the prestressed bolt during the loading process was divided into three different stages. With an increase in the inclination angle from 30 degrees to 60 degrees, the peak tension stress value first increased and then decreased and obtained the maximum value at inclination angle of 45 degrees. Besides, the peak tension stress value increased with pretension stress.
WOS研究方向	Materials Science
语种	英语
WOS记录号	WOS:000460213100001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/15087]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.North China Univ Water Resources & Elect Power, Coll Geosci & Engn, Zhengzhou 450046, Henan, Peoples R China; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Xu, Rongchao,Zhou, Hui. Experimental Investigation of the Anchoring Effect of Two Different Types of Rock Bolts on Fractured Rock[J]. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2019(-):-.
APA	Xu, Rongchao,&Zhou, Hui.(2019).Experimental Investigation of the Anchoring Effect of Two Different Types of Rock Bolts on Fractured Rock.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING(-),-.
MLA	Xu, Rongchao,et al."Experimental Investigation of the Anchoring Effect of Two Different Types of Rock Bolts on Fractured Rock".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING .-(2019):-.