Mine Gas Control Technologies and Practices in Australia
Australia has developed a number of gas drainage technologies over the last twenty years andachiered significant success in gas and outburst control.The majority of coal seams inAustralian coal basins are regarded as medium to highly gassy，and are prone to coal and gas outbursts.To prevent these outbursts in coal mines,Australia uses extensive gas pre-drainagetechniques to reduce the virgin seam gas content below the outburst threshold levels.One of the major developments in this field in Australia is the development of directional drillingtechnology，which significantly increased the targeted pre-drainage capability of the coalindustry.These developments have led to the prevention of outbursts and significantimprovements in gas drainage performance and productivity in the coal mining industry.Goaf gas control is another major issue in most of the gassy underground coal mines due to its directimpact on safety，production delays and cost of production.Analysis of the gas data fromdifferent collieries in Australia showed that longwall gas emissions have increasedsubstantially over the years.Simply drilling a surface goal hole into the longwall goal orincreasing the number of goal holes in the panel or reducing goaf hole spacing does not seem to be effective in controlling high goal gas emissions.A number of developments have taken placein the recent years to achieve a step-change improvement in goaf gas drainage performance.Abrief summary of various gas drainage technologies and practices being used in Australia and the recent developments in goal gas control strategies are summarised in this paper.
Mine gas control Gas pre-drainage Goaf gas inseam holes
Rao Balusu Patrick Humphries Hua Guo Ting Ren Sheng Xue
CSIRO Exploration and Mining,PO Box 883,Kenmore,Queensland 4069 Australia
国内会议
安徽淮南
英文
148-172
2007-10-25（万方平台首次上网日期，不代表论文的发表时间）