The variation of the DSCF with the diameter of the auxiliaryhole has been presented and the optimum size of the auxiliaryhole has been obtained.
文中得到了动态应力集中系数随辅助孔直径的变化规律，同时得到了辅助孔的优化尺寸。
2
First, there is no slope hole or silo, the auxiliaryhole of construction adopts longitudinal ventilation only by jet Second, it belongs to deep buried hole, long body, little shape section.
第一辅助洞没有斜井或竖井，施工辅助洞采用全射流纵向通风。第二辅助洞埋深大，洞体长，洞形断面小。
3
Using full vector orthogonal function model of the auxiliary air hole pattern of cut-off characteristics of optical fiber were discussed.