Simulation of Rock-Breaking Process by Drilling Machine and Dynamic Classification of Surrounding Rocks

doi:10.1007/s00603-021-02659-w

	Simulation of Rock-Breaking Process by Drilling Machine and Dynamic Classification of Surrounding Rocks
	Tan, Fei 2; You, Minglong 2; Zuo, Changqun 2; Jiao, Yu-Yong 2; Tian, Hunan 1
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2021-10-21
页码	15
关键词	Pneumatic rock drill Drilling parameters Discrete element method Classification of surrounding rocks
ISSN号	0723-2632
DOI	10.1007/s00603-021-02659-w
英文摘要	Unfavorable geological phenomena such as fault development and weak surrounding rocks are the common challenges encountered in tunnel excavation. However, the conventional rock mass classification method is complex, and the data obtained through disturbed rock samples cannot be used to dynamically and accurately class the surrounding rock in real time. In this study, discrete element method (DEM) is applied to simulate the rock-breaking process by pneumatic rock drill, and the drilling parameters of the surrounding rocks with different classes including drilling rate, vibration acceleration, and vibration frequency, are acquired during the excavation. The simulation results are verified through the data obtained by field tests in Luoping tunnel and Zilinshan tunnel of the Sandu Expressway in Guizhou province, China. Furthermore, a standard database for the dynamic classification of surrounding rocks is established. The numerical simulations reveal a good correlation between the average drilling rate, vibration acceleration, and vibration frequency of drill bit and the class of surrounding rock, and these factors can be used as dynamic evaluation indices for advanced geological prediction during tunnel construction. Overall, the results can serve as a useful reference for advanced geological prediction and dynamic classification of surrounding rocks during the construction of tunnels.
资助项目	National Natural Science Foundation of China[41920104007] ; National Natural Science Foundation of China[51879245] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUGCJ1821]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000709667500001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28374]
专题	中科院武汉岩土力学所
通讯作者	Zuo, Changqun
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 2.China Univ Geosci, Fac Engn, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Tan, Fei,You, Minglong,Zuo, Changqun,et al. Simulation of Rock-Breaking Process by Drilling Machine and Dynamic Classification of Surrounding Rocks[J]. ROCK MECHANICS AND ROCK ENGINEERING,2021:15.
APA	Tan, Fei,You, Minglong,Zuo, Changqun,Jiao, Yu-Yong,&Tian, Hunan.(2021).Simulation of Rock-Breaking Process by Drilling Machine and Dynamic Classification of Surrounding Rocks.ROCK MECHANICS AND ROCK ENGINEERING,15.
MLA	Tan, Fei,et al."Simulation of Rock-Breaking Process by Drilling Machine and Dynamic Classification of Surrounding Rocks".ROCK MECHANICS AND ROCK ENGINEERING (2021):15.