黑龙江科技学院学报2012，Vol.22Issue(5)：447-451,5.
不同性质外液对煤与瓦斯突出防治效果影响
Different kinds of external solution impact on prevention and cure effect of coal and gas outburst
孙成坤 1傅贵2
作者信息
- 1. 黑龙江龙煤矿业控股集团有限责任公司,哈尔滨150090 中国矿业大学资源与安全工程学院,北京100083
- 2. 中国矿业大学资源与安全工程学院,北京100083
- 折叠
摘要
Abstract
Aimed at addressing the problem resulting trom injecting water into coal seam to prevent coal and gas outburst, this paper builds on coal face production condition of Qitaihe Xinxing colliery 92^# coal seam and describes the use of the combined method of numerical simulation research and the indus- trial test to study the impact of pure water and surfactant solution on plastic infiltration area around drill hole and vertical stress distribution of coal face. The results show that injecting external solution into the preliminary coal body vulnerable to coal and gas outburst danger contributes to reducing stress peak, in- creasing stress peak distance, expanding overage of stress increase area, and thus improving the outburst prevention effect. The outburst prevention effect depends on external solution properties in such a way that surfactant solution is better than pure water. Solution injection into drill hole leads to the correlation between the development state of plastic infiltration range on the one hand and drill holes, injection pres- sure, and fluid medium properties on the other hand. With the same fluid medium condition, a higher injection pressure results in a wider the plastic infiltration area range around drill hole; adding surfaetant into pure water allows plastic infiltration area between drill holes to develop not only at a greater range and higher speed faster, but also with a better uniformity in each direction. The study is of significance to oreventing coal and gas outburst by using water iniection.关键词
煤与瓦斯突出/注液/表面活性剂/塑性区/应力分布Key words
coal and gas outburst/injection solution/surfactant solution/plastic range/stress dis-tribution分类
矿业与冶金引用本文复制引用
孙成坤,傅贵..不同性质外液对煤与瓦斯突出防治效果影响[J].黑龙江科技学院学报,2012,22(5):447-451,5.
