为保证回风大巷下方工作面连续回采,在冀中能源邢台矿5702工作面采用过大巷连续回采技术的基础上,利用理论分析的方法对5702工作面过上方回风大巷连续开采时野青灰岩层能否形成关键层进行判定。基于工作面上方关键层对回风大巷的保护作用,对5702工作面过上方210回风大巷连续回采进行了实践研究。实测结果表明:5702工作面过210回风大巷连续回采过程中,210回风大巷只产生局部破坏,巷道未发生严重变形,能保证正常使用。

In order to ensure the continuous mining of the coal mining face under the mine air returning roadway, based on the crossing over mine roadway continu ous mining technology applied to No.5702 coal mining face in Jizhong Energy Xingtai Mine, a theoretical analysis method was applied to judge the key stratum formed with Yeqing limestone during the continuous mining of No.5702 coal mining face crossing over the air returning roadway.Based on the protection role of the key stratum above the coal mining face for the mine roadway, a practical study on the continuous mining of No.5702 coal mining face crossing over the upper No.210 air returning r oadway was conducted.The measuring results showed that during the continuous mining of No.5702 coal mining face passing over No.210 air returning roadway, there was only local failure occurred in No.210 air returning roadway, no serious deformation occurred in the roadway and a normal application of the roadway was ensured.

“十一五”国家科技支撑计划资助项目(2009BAB48B02)；