立井井筒采动变形机理与防护技术研究

Study on Mining Deformation Mechanism of Mine Shaft and Prevention Technology

针对井筒保护煤柱的后期回收,提出在井筒建设之初即考虑其采动影响,并采取相应的防护技术。研究揭示了采动影响下井筒在竖向上从弹性阶段到塑性阶段的变形机理过程;根据井筒的采动变形机理,采用了刚柔相结合的抗变形技术措施,实现井筒的安全防护,并着重论述了在岩层软弱位置加设橡胶砖可缩性井壁的柔性抗变形技术措施。实践证明,该研究成果能够很好的防止井筒受到采动影响而损坏,具有广泛的推广应用价值。

According to the later recovery of the coal pillars protected to the mine shaft, the mining activity influences should be considered at the initial period of the mine shaft construction and the related protective technology should be taken. The study revealed the deformation mechanism process from the elastic stage to plastic stage in the vertical direction of the mine shaft under the mining activity influences. Base on mining deformation mechanism of the mine shaft, the anti deformation technical measures combined with rigidity and flexibility were applied to realize the safety protection of the mine shaft. The flexibility anti deformation technical measures with rubber brick yielding shaft lining at the weak location of the rock were stressed. The practices showed that the study achievements could be well to prevent the mine shaft influenced by the mining activity and failure and would have a wide promotion and application value.