Blasting Vibration Characteristics Calculation Formula considering Cylindrical Charge Delay Time

Autor:	En Yang, Zhong-Qi Wang, Qian Xu
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	Article Subject Mechanics of Materials Mechanical Engineering Astrophysics::High Energy Astrophysical Phenomena Physics QC1-999 Geotechnical Engineering and Engineering Geology Condensed Matter Physics Civil and Structural Engineering
Zdroj:	Shock and Vibration, Vol 2022 (2022)
ISSN:	1875-9203
Popis:	The surrounding rock is divided into the elastic zone and the plastic zone according to the motion and deformation characteristics of the medium in rock blasting. The vibration caused by the cylindrical charge blasting is outlined on the basis of previous research concerning the blasting elastic-plastic theory. Meanwhile, a superposition model is used to calculate the vibration of cylindrical charge blasting on the premise of considering the influence of detonation velocity, the number of drug columns, and the time delay between holes. The analysis results show that the blasting causes the uneven spatial distribution of vibration, containing both strong and weak directions. The velocity of the vibration along weak directions decreases slowly with the increase of distance. But generally, the velocity along weak directions is faster. The vibration distribution of a cylindrical charge is closely related to the detonator location. Furthermore, more vibration distributes towards the forward direction of the detonation wave.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d394fec10ccbc803ebe11596810fe4eb https://doaj.org/article/ff8a686b57d147abbac9a7891e3de573 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.