The excavation of long shaft under high dip Angle and large diameter has a big difficulty and a high risk.
陡倾角、大直径、长斜井开挖施工难度大、危险程度高。
Because construction circumstances of high dip Angle and long inclined shaft was special, the construction was difficult and there were many insecurity factors.
陡倾角长斜井施工由于施工环境特殊，施工难度大，存在诸多不安全因素。
Because construction circumstances of high dip Angle and long inclined shaft was special, the construction was difficult and there were many insecurity factors.
陡倾角长斜井施工由于施工环境特殊，施工难度大，存在诸多不安全因素。
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