摘要
依据朱仙庄871综放工作面地质条件和旋转回采技术参数,利用数值模拟和现场钻孔电视的方法,对厚煤层综放工作面旋转回采技术进行了深入地研究,揭示了旋转段围岩力学特性。通过研究可知,厚煤层综放工作面旋转回采拐角处围岩应力集中较大,旋转拐角处煤体以及上覆一定范围内的顶板裂隙高度发育。
According to the geological conditions and the rotary mining technical parameters of No. 871 fully mechanized top coal caving mining face in Zhuxianzhuang Mine, the numerical simulation and the site borehole TV method were applied to the deep study on the rotary mining technology of the fully mechanized top caol caving mining face in thick seam and the mechanics features of the surrounding rock at the rotary mining section were revealed. The study showed that the stress concentration of the surrounding rock at the rotary mining comer of the fully mechanized top coal caving mining face in thick seam would be high and the coal at the rotary mining comer and the above roof crack height would be developed.
出处
《煤炭工程》
北大核心
2011年第10期75-76,共2页
Coal Engineering
关键词
综放工作面
旋转回采
裂隙发育
应力集中
厚煤层
fully mechanized top coal caving mining face
rotary mining
crack development
stress concentration
thick seam
