HKUST Library Institutional Repository Banner

HKUST Institutional Repository >
Research Centre >
RC Technical Reports >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/1436
Title: Hand-dug caisson dust abatement system
Authors: Fang, Ming
Keywords: Caisson
Silicosis
Dust removal
Wet scrubbing
Issue Date: May-1994
Series/Report no.: Research Centre Publications 94-09
Abstract: Caissons are widely used in foundation preparation in Hong Kong. Typically these caissons are 1 to 4 meters in diameter and 10 to 30 meters in depth. Because of the hilly terrain, manual digging is the preferred method and furthermore, because of the geology, granite is usually encountered and has to be removed by pneumatics drills. This creates a great deal of silica containing dust in a confined space and is extremely hazardous to the drill operators. As high as 2000 times TLV have been measured in previous studies and some drill operators contracted silicosis within one year. An in situ dust removal system, using wet scrubbing and ventilation methods, was designed, fabricated and field tested and proved to be effective in removing up to 98% of the dust generated in an 1-m diameter caisson.
URI: http://hdl.handle.net/1783.1/1436
Appears in Collections:RC Technical Reports

Files in This Item:

File Description SizeFormat
rc9409.pdf3977KbAdobe PDFView/Open

All items in this Repository are protected by copyright, with all rights reserved.