摘要
冒落带的最大高度一般是由工作面煤层顶板特有的岩性组合及岩石物理力学性质决定的,冒落带高度的确定是了解“三带”分布范围的关键,是合理设计顶板高抽岩巷的布置层位和高抽钻孔的终孔层位的前提。为了使下石节矿高瓦斯易自燃特厚煤层综放工作面采空区瓦斯抽放技术取得更好的效果,文中介绍了一种比较新颖的测量方法即钻孔返水计量法的设计及实施,并通过现场实测一些数据进行数值模拟来准确确定下石节矿上覆岩层位移冒落带的高度。
Braves to fall the belt most greatly to think highly generally is by the working surface coal bed roof unique lithological character combination and the rock physics mechanical properties decision, braves to fall the belt high determination is understood ＂three belts＂ the distribution scope key, is reasonable design roof high pulls crag lane arrangement position and pulls out the drill hole high the end hole position premise. In order to cause the XiaShiJie mine high gas easy spontaneous combustion special thick seam synthesis to put the working surface to pick the depletion region gas to pull out puts the technology to obtain a better effect, this paper introduced one quite novel measuring technique is the drill hole returns the water method of variables the design and the implementation, and carries on the value through the scene actual some data to simulate under the accurate determination the XiaShiJie mine overburden displacement to brave to fall the belt the altitude.
出处
《煤》
2007年第1期1-3,共3页
Coal
基金
国家"十五"科技攻关滚动项目
关键词
“三带”分布
冒落带高度
钻孔返水计量法
数值模拟
＂ three belts＂ distribution
the height of overlying strata
the drill hole returns the water method of variables
numerical simulation
