Experimental study on the dust suppression effect of water cannon mud in drilling and blasting tunnel

2021 ◽  
Author(s):  
Guohua Huang ◽  
Furun Zheng ◽  
Yexiang Zhang ◽  
Mingchao Liu ◽  
Feilong Zhou ◽  
...  
Keyword(s):  
Experimental Study ◽  
Dust Suppression ◽  
Suppression Effect ◽  
Effect Of Water

Experimental Investigation of Dust Amount from Free Falling Particle Stream Effected by Deflector Curvature of Dust Suppression

2013 ◽  
Vol 864-867 ◽  
pp. 1789-1792 ◽  
Author(s):  
Ze Qin Liu ◽  
Zhen Jing Wu ◽  
Ze Peng Feng
Keyword(s):  
Experimental Investigation ◽  
Dust Control ◽  
Emissions Reduction ◽  
Fugitive Dust ◽  
Bulk Materials ◽  
Dust Suppression ◽  
Suppression Effect ◽  
Particle Stream ◽  
Free Falling ◽  
The Relationship

This paper focuses on the study of the curvatures of deflector installed on the below receiving device to effect the dust amount from the free falling particle stream. The deflector curvature was artificially controlled to limit the fugitive dust direction which was generated by the collision between the free falling bulk materials and the receiving device. This method was used to improve efficiency of the dust control system to exhaust fugitive dust, and to achieve the targets of energy conservation and emissions reduction. The experimental method was adopted to explore the relationship between the deflector curvature and the producing dust quantity. The experimental results indicated that, the dust suppression effect containing deflector contained a certain radian was more remarkable, when the height of the free falling of bulk materials was constant. The producing dust quantity decreased slightly with the deflector curvature increasing, and then increased rapidly. When the deflector curvature was 0.045 cm-1 or 0.060cm-1, the minimum of producing dust quantity could be obtained, and the dust removal effect might be significant.

Suppression of Sheet Cavitation Inception by Water Discharge Through Slit

1987 ◽  
Vol 109 (1) ◽  
pp. 70-74 ◽  
Author(s):  
Hiroharu Kato ◽  
Hajime Yamaguchi ◽  
Shinzo Okada ◽  
Kohei Kikuchi ◽  
Masaru Miyanaga
Keyword(s):  
Boundary Layer ◽  
Flow Visualization ◽  
Discharge Rate ◽  
Water Discharge ◽  
Cavitation Inception ◽  
Suppression Effect ◽  
Sheet Cavitation ◽  
Effect Of Water

This paper studies experimentally the suppression effect of water discharge on incipient and developed sheet cavitation on a hemispherical headform. The water is discharged tangentially from a slit upstream of a cavitating region into the boundary layer on the headform. Increasing the discharge rate, the length of the sheet cavity becomes shorter and then the cavity is suppressed completely. Flow visualization test shows the generation of wavy motion in the boundary layer which disturbs the separated zone, resulting in disappearance of the sheet cavitation.

Experimental Study about Effect of Water-Jet to Laser Etching of Crystal Silicon

Applied laser ◽  
2014 ◽  
Vol 34 (6) ◽  
pp. 557-561
Author(s):  
张崇天 Zhang Chongtian ◽  
袁根福 Yuan Genfu ◽  
陈雪辉 Chen Xuehui ◽  
张程 Zhang Cheng ◽  
王海云 Wang Haiyun
Keyword(s):  
Experimental Study ◽  
Water Jet ◽  
Laser Etching ◽  
Crystal Silicon ◽  
Effect Of Water
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