通过对永煤集团城郊矿已建风井首次使用的可压缩装置的研究,改进了其不足之处,使其更好地适用于该地区深层冻结井筒的需要,并于2005年7月在永煤集团新建矿井———新桥矿主副井筒应用成功,为可压缩装置在新建矿井中扩大应用奠定了基础,为预防井壁受压破裂找到了一条新途径。 Through the research on the first compressible device used in the built-up shaft of the outskirts mine of Yongmei Group, the defects are improved to make it more suitable for the deep freezing borehole in the area. In July 2005, The successful construction of the main well and the auxiliary shaft of Xinqiao Coal Mine, the new coal mine of Xinhua Coal Mine, laid a foundation for the expansion of compressible devices in new mines and found a new way to prevent the compression and rupture of wellbore wall.