袁大滩矿井副斜井液氮冻结技术应用

Application of auxiliary inclined shaft liquid nitrogen freezing technology in Yuandatan Mine

通过工程实例,针对斜井含盐地层液氮冻结技术的特点,对液氮冻结在斜井含盐地层加固的冻结方案设计、冻结系统优化、冻结帷幕发展规律等方面进行实测、研究,解决斜井地层采用液氮冻结时出现的问题,制定切实可行的解决措施,总结相关规律,为以后类似工程液氮冻结方案设计提供参考和依据。

By engineering example, based on features of inclined shaft salt-bearing strata liquid nitrogen freezing technology, freezing scheme design, the system optimization, freezing curtain development law of liquid nitrogen freezing inclined shaft salt stratum reinforcement were measured and studied, the problem in liquid nitrogen freezing of inclined shaft was solved, the relative law and measurement were summarized, which provided reference and basis for future liquid nitrogen freezing scheme design under similar condition.