厚黄土大断面立井冻结井壁温度场研究与监测

Research and Monitoring on Freezing Wall Temperature of Large Section Main in Thick Yellow Loess

通过理论分析与现场观测,依据国内某大型煤矿矿的地质条件确定了采用二圈冻结孔共同运转的综合施工方案,计算出该矿副井冻结井壁平均温度并在施工过程中采用科学的方法对温度场进行了动态监测。根据监测数据和曲线分布,总结出冻结孔圈之间不同部位共界面冻土交汇时间最长;深部粘土层主冻结孔外侧、辅冻结孔内侧冻土的扩展状况影响因素。该项研究对我国冻结法施工温度场的控制和监测提供了理论依据与应用指导。

Through the theoretical analysis and the field observation, according to a domestic large coal mine of mine geological conditions by using two laps to determine the comprehensive work together to freeze hole construction plan and calculate the mine auxiliary shaft freezing wall of the average temperature in the construction process and the scientific method of temperature field the dynamic monitoring. According to the monitoring data and curve distribution, summarizes frozen hole between different parts of circle interface permafrost longest intersection; Deep freeze the Lord of clay layer, auxiliary freeze hole inside the expansion of permafrost conditions affect the factors. The study of freezing method construction of our country of temperature field of control and monitoring provides theoretical basis for the application and guidance.