祁南煤矿副井冻结段的井壁结构，采用了新设计的可缩滑动井壁。结合施工实践，对井壁厚度偏薄、滑动层厚度偏小，以及采用沥青作为井壁滑动和内壁防水材料等问题进行了分析，提出了需进一步研究的问题 The shaft wall structure of the auxiliary shaft freezing section in Qinan Coal Mine adopts a newly designed shrinkable sliding shaft wall. Combined with the construction practice, the thin wall thickness, the sliding layer thickness is small, as well as the use of asphalt as wall sliding and wall waterproof material and other issues were analyzed, put forward the need for further study of the problem