Research On Deformation Of Inclined Frozen Wall Under Different Freezing Forms

With the using of freezing method in China’s western region, the success of inclinedfreezing construction is directly related to the safety of the mine construction. In this paper,along the axis of the freezing and vertical freezing: researching the deformation of the frozenwall excavation. This article can provide some reference value to the design of inclined shaft,and provide the basis for the assurance of safety during excavation.（1）Conduct numerical simulation. Analyze of the temperature field and freeze curtainof along the axis of the freezing and vertical under typical parameters. And compare the freezecurtain features of forms of. By thermodynamic coupling, analysis of displacement and stressin the form of typical parameters of two freeze frozen wall during excavation of the pointsunder consideration in the case of frozen wall creep, And selecting the main analysis site;Analysis of displacement and stress of the main parts of univariate analysis cycles, concludingthat the impact of various factors on deformation and stress of the frozen wall after excavation（2）Field measurement of National Coal Lijiaba inclined engineering, According tofield test program design inclined excavation safety requirements and construction features,analyse the freezing wall temperature and the deformation of the points at the surface of thefrozen wall after excavation. Conducting numerical simulation by the actual situation of theproject, compare the result of the field measurement and numerical simulation.（3）Based on the analysis, the maximum deformation of along the axis of the freezing issmaller than the vertical freezing, and the maximum deformation of them are in the top and bottom ofthe arch. The maximum stress of the vertical freezing is bigger than along the axis of the freezing, and themaximum stress of them are in straight wall corner.