Large Deformation Control of Deep Roadways in Fractured Hard Rock Based on Cracking-Restraint Method

doi:10.1007/s00603-021-02384-4

	Large Deformation Control of Deep Roadways in Fractured Hard Rock Based on Cracking-Restraint Method
	Zhao, Yue-Mao 3; Feng, Xia-Ting 3; Jiang, Quan 2; Han, Yong 3; Zhou, Yang-Yi 3; Guo, Hui-Gao 1; Kou, Yong-Yuan 1; Shi, Ying-En 2
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2021-03-09
页码	22
关键词	Deep roadway Fractured hard rock Large deformation control Cracking-restraint method Energy absorbing bolt
ISSN号	0723-2632
DOI	10.1007/s00603-021-02384-4
英文摘要	Large deformations often occur during and after the construction of deep roadways, particularly in fractured hard rock. With persistent deformation, there may be mechanistically unexplained, repeated failure phenomena-they are difficult problems to analyse and address. One strategy is to analyse the failure characteristics of roadways and internal cracking characteristics of the surrounding rock which can be analysed with a digital borehole televiewer and three-dimensional laser scanning equipment. Here, we used this approach combined with research on geostress, joint information, and mechanical properties of rock to reveal the preliminary large deformation mechanism of deep fractured roadways. Based on a cracking-restraint method for engineering design, a control technique is proposed to prevent and control large deformations. The depth and degree of cracking are considered to design parameters and determine the appropriate installation time of the support system. To test this approach, the proposed control technique was applied to a roadway project more than 700 meters deep. The monitoring results demonstrated that this control strategy effectively restrained the cracking of surrounding rocks, improved the quality index of the rock mass, and reduced surface displacement. In addition, due to the improved deformation capacity of the bolt structure, an anti-deformation and energy-absorbing bolt can bear large deformations, preventing premature bolt failures in mining environments.
资助项目	National Natural Science Foundation of China[51621006] ; National Key Research and Development Program of China[2016YFC0600707]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000626830600001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25909]
专题	中科院武汉岩土力学所
通讯作者	Feng, Xia-Ting
作者单位	1.Jinchuan Grp Co Ltd, Jinchang 737100, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Northeastern Univ, Key Lab, Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yue-Mao,Feng, Xia-Ting,Jiang, Quan,et al. Large Deformation Control of Deep Roadways in Fractured Hard Rock Based on Cracking-Restraint Method[J]. ROCK MECHANICS AND ROCK ENGINEERING,2021:22.
APA	Zhao, Yue-Mao.,Feng, Xia-Ting.,Jiang, Quan.,Han, Yong.,Zhou, Yang-Yi.,...&Shi, Ying-En.(2021).Large Deformation Control of Deep Roadways in Fractured Hard Rock Based on Cracking-Restraint Method.ROCK MECHANICS AND ROCK ENGINEERING,22.
MLA	Zhao, Yue-Mao,et al."Large Deformation Control of Deep Roadways in Fractured Hard Rock Based on Cracking-Restraint Method".ROCK MECHANICS AND ROCK ENGINEERING (2021):22.