一、设计概况 三河口矿设计生产能力60万t。副井净直径6.0m,深381m。井筒穿过表土层厚53.3m。鉴于二迭系石盒子组上部地层含水丰富,冻结深度确定为井口以下162m。采用冻结法施工穿过含水岩层。原设计冻结表土段和含水岩层段均采用双层钢筋棍凝土井壁。结构见图1a,特征如表1。 First, the design profile Sanhekou mine design and production capacity of 600,000 t. Auxiliary net diameter 6.0m, depth 381m. Wellbore through the topsoil thickness 53.3m. In view of the abundant water in the upper strata of the Permian Shihezi Formation, the freezing depth was determined to be 162m below the wellhead. Construction by freezing method through the aquifer. The original design of frozen soil sections and aquifer sections are double reinforced concrete stick shaft wall. Structure shown in Figure 1a, features such as Table 1.