淮南潘集矿区表土流砂层较厚,井型大,多采用冻结法施工,冻结深度一般在300米以上。冻结段采用夹有聚乙烯塑料板的双层现浇钢筋混凝土复合井壁(个别井段外壁尚砌有料石层),图1是这一地区井壁结构的示例。潘二副井及西风井井壁结构特征见表1。 Huainan Panji mining area is too thick sand surface flow, well type, and more use of frozen construction, the freezing depth is generally above 300 meters. The freezing section adopts double-layer cast-in-place reinforced concrete composite wall with polyethylene plastic board (the outer wall of individual well section still has material stone layer). Figure 1 shows an example of well wall structure in this area. Pan secondary shaft and westerly shaft wall structure shown in Table 1.