Taking the open-off cut in 10201-S working face at Sihe mine as a example,the schem,technical parameters and construction method for the support of large section open-off cut are introduce.

• 以寺河矿10201S首采工作面切眼为例,证实了大断面切眼的支护设计方案、技术参数以及施工方法选择的正确性,介绍了施工中所采取的技术保证措施。