近距离煤层共巷开采技术研究

Co-roadway Mining in Close-distance Coal Seam

通过对长城煤矿9号煤上、下分层即近距离煤层共巷开采技术的深入研究,克服制约生产环节的诸多因素,掌握了近距离煤层共巷开采的施工工艺,达到了提高煤炭回收率、降低采掘比例,缓解矿井接续紧张的目的,解决了共巷薄煤层自带回风巷通风技术难题。

By further study and overcoming many constraints on co-roadway mining of upper and lower seams or close-distance coal seam in No.9 seam in Changcheng Mine, we learned the technique of close-distance co-roadway mining, improved the coal recovery rate, reduced the mining and driving rate, relieved the continuous tension, and solved the technical problems of ventilation in the integral return airway of the thin coal seams.