关键词: 井筒变形, 变形预测, 井筒治理, 倒垂线

Abstract: No.1 shaft in a Shandong gold mine was deformed, distorted, cracked and damaged due to the private mining in recent years.To ensure the safty production of the mine, forecast was made of the subsidence and strentching and compressive deformation of the shaft.Control measures were taken according to the forecast deformation value such as blasting unloading and pre-stressed anchor cable reinforcement.The observation of the shaft distortion by inverted plumbline method shows that the control measures have achieved a very good effect.

Key words: Shaft deformation, Deformation forecast, Shaft control, Inverted plumbline