An equivalent method for blasting vibration simulation

Lu, Wenbo; Yang, Jianhua; Chen, Ming; Zhou, Chuangbing

doi:10.1016/j.simpat.2011.05.012

Cited by 96 publications

(40 citation statements)

References 17 publications

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“…[28][29][30][31] In this equation, PPV is in power functional relationship with distance to blasting source, which is similar to prediction equations in previous studies on railway-induced vibration. [32][33][34] Therefore, it is reasonable to modify Sadovskii formula so as to describe propagation and attenuation of vibration induced by train operation on viaduct.…”

Section: Ground Vibrationmentioning

confidence: 71%

“…As shown in Figure 1, theoretical researches and experiments indicate that the diameter of crushed zone is about 3-5 times that of a borehole, and the diameter of fractured zone is around 10-15 times that of borehole. 27,28 That means shock wave induced by blasting is usually within the range of about 0.21-1.05 m in diameter (for a typical 70-mm borehole), which is even smaller than diameter of a viaduct pier. Therefore, ground vibration induced by a pier-soil interaction can be analyzed in a similar way to blast-induced ground vibration.…”

Section: Ground Vibrationmentioning

confidence: 99%

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Experimental study on ground vibration attenuation induced by heavy freight wagons on a railway viaduct

Luo

Zhuang

et al. 2018

Journal of Low Frequency Noise, Vibration and Active Control

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Studies on ground vibration induced by railway operation usually focused on wagons running on ground or abutments, while vibration from a railway viaduct is often assumed to be much lower. Based on field test in the vicinity of a heavy freight railway viaduct above Shenshan Village, China, the attenuation of ground vibration induced by heavy freight wagons for coal transportation is studied. And evaluation is conducted on an adjacent house to access vibration disturbance to residents near a viaduct. Propagation and attenuation of vibration induced from viaduct are studied by analyzing peak particle velocity and spectra of ground and house vibration in the vicinity of the viaduct. Vibration signals were collected for 34 trains with different train speed and wagon weight. In all monitored situations, vertical vibration is generally larger than horizontal vibration. The relationship between distance to pier and PPV is revealed by a power function modified from Sadovskii formula with high correlation factor. Analysis also indicates a much lower dominant frequency induced by low-speed trains with or without acceleration than normal speed trains. A dramatic amplitude reduction is shown within frequency between 25 Hz and 35 Hz when train speed is reduced. Empty wagons also show smaller amplitude in most frequency bands, with significant difference in 15-25 Hz. Analysis on the house also shows larger vibration in vertical than horizontal, and vibration amplitude in some frequency bands has exceeded relative criteria. Analysis result shows significant ground and house vibration effect form a viaduct, and piers should be considered as vibration sources for ground and houses in future studies.

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Section: Ground Vibrationmentioning

confidence: 71%

Section: Ground Vibrationmentioning

confidence: 99%

Experimental study on ground vibration attenuation induced by heavy freight wagons on a railway viaduct

Luo

Zhuang

et al. 2018

Journal of Low Frequency Noise, Vibration and Active Control

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“…Research and experiments indicate that the radius of crushing zone is about 3-5 times the blasthole radius, and the fracture zone is around 10-15 times the blasthole radius. The radius of fracture zone can be obtained by the following equation [20,21]:…”

Section: The Rational Of Shallow-hole Blasting To Force Roofmentioning

confidence: 99%

An Innovative Approach for Gob-Side Entry Retaining With Thick and Hard Roof: A Case Study

Zhang¹,

Liu²,

Bai

et al. 2018

Teh. vjesn.

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An innovative roadway layout in a Chinese colliery based on gob-side entry retaining (GER) with thick and hard roof (THR) was introduced. Suspended roof is left with a large area in GER with THR, which leads to large area roof weighting (LARW). LARW for GER with THR and mechanism of shallow-hole blasting to force roof caving in GER were expounded. Key parameters of shallow-hole blasting to force roof caving are proposed. LS-DYNA3D was used to validate the rationality of those key parameters, and UDEC was used to discuss and validate shallow-hole blasting to force roof-caving effect by contrast to the model without blasting and the model with shallow-hole blasting. Moreover, shallow-hole blasting technology to force roof caving for GER with THR was carried out in the Chinese colliery as a case study. Field test indicates that shallow-hole blasting technology effectively controls ground deformation of GER with THR and prevents LARW.

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“…In addition, wanting a simple and practical equivalent to actual blast loading and real blasts, Toraño et al [27], as well as other researchers [28], sought some simple and practical methods by which to simulate explosive detonation and the propagation of seismic waves. Based on the Chapman-Jouguet model, the parameters at the detonation front are guided by the widely known equation by [29] …”

Section: Equivalent Excavations Loadingmentioning

confidence: 99%

“…The initial explosion pressure p 0 applied to the blast-hole wall is approximately half of the detonation pressure for couple charges [29].…”

Section: Equivalent Excavations Loadingmentioning

confidence: 99%

3D numerical model for dynamic loading-induced multiple fracture zones around underground cavity faces

Tao

2013

Computers and Geotechnics

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Chengqing 3D numerical model for dynamic loading-induced multiple fracture zones around underground cavity faces, Computers and Geotechnics, 2013; 54:33-45. Copyright © 2013 Elsevier Ltd. All rights reserved. NOTICE: this is the author's version of a work that was accepted for publication in EarthScience Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computers and Geotechnics, 2013; 54:33-45 Abstract: Three dimensional numerical modelling was used to examine the fracture responses around cavities in rock masses experiencing the stress of excavation. In addition to the primary fracture zone in the near field, numerical modelling generated a second fracture zone in the far field, and an elastic non-fracture zone between the two fields, i.e., fracture and non-fracture zones occur alternately around a deep cavity. Further research illustrated that the dynamic loading and static stress gradient are two necessary precursors for far field fracture in the excavation process. Neither quasi-static loading nor homogeneous stress conditions can induce a far field fracture. A simple theory is introduced suggesting that multiple fracture zones occur during excavation due to both the initial stress gradient and the dynamic loading. This finding indicates that it may be possible to induce continuous rock fracture in deep underground rock masses by employing optimal excavation methods to generate multiple contiguous fracture zones. Answers to the reviewers' commentsDear reviewers: Our manuscript (ID: COGE-D-13-00021) was revised according to your comments. We hope that our responses have classified each of your comments and can be of help to the improvement of our manuscript. We apologize for the troubles brought by our carelessness. We appreciate your constructive criticisms. This answer sheet lists the major changes and our reply to the reviewers" comments and recommendations. Answer to reviewer #11. Page 5: "a possible"Response: Page 5 "a possible" was added. Page 8: "surely this is a function of the constitute model, is it brittle behaviour or ductile behaviour?"Response: It is brittle behavior, the secondary fracture zone results from the combination of a dynamic loading acting over a cavity and an ascending static initial stress around it. When the peak stress which results from the ascending static stress gradient field in conjunction with the descending dynamic loading in a zone is more than the failure criterion of rock material, another fracture zone in far field will be induced. Page 9: "This is a massive deviatory stress field, are you sure?"Response: Yes, this is a massive deviatory stress field. The aim of this manuscript is to illustrate that the unloading process can induce rock failure, thus the extreme massive deviatory stress fie...

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An equivalent method for blasting vibration simulation

Cited by 96 publications

References 17 publications

Experimental study on ground vibration attenuation induced by heavy freight wagons on a railway viaduct

Experimental study on ground vibration attenuation induced by heavy freight wagons on a railway viaduct

An Innovative Approach for Gob-Side Entry Retaining With Thick and Hard Roof: A Case Study

3D numerical model for dynamic loading-induced multiple fracture zones around underground cavity faces

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