Influence of Water Saturation on Curtain Formation of Frozen Wall

In the process of in situ mining underground oil shale, it is necessary to build an frozen wall around area prevent inflow groundwater and gas leakage. However, water saturation soil affects formation freezing circle. practical engineering, when building a under different conditions, curtain often not closed. It also construction operating costs entire project. this paper, methods laboratory experiments numerical simulation analysis are supplemented by ordinary differential equations partial equations. Aiming at lowest cost, temperature drop time well conditions calculated analyzed detail. The law obtained. provides reference for setting low-temperature loading shale extraction range wells soils engineering.