Structure optimization and application of steel trapezium - shaped support 对焊工字钢支架在综放大断面开切眼中的应用
2.
Bolt support technique for large section with top - coal caving mining in three - soft seam roadway 综放大断面三软煤巷锚杆支护技术
3.
Support technology for large cross section roadway driving along next goaf in fully mechanized sub - level caving face in high stress three - soft seam 高应力三软煤层综放大断面沿空掘巷支护技术
4.
Similar materials experiment of the influence laws of load coefficient on the surrounding rock of large - section starting cut in top - coal caving face 载荷系数影响综放大断面开切眼围岩变形相似模拟研究
