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山东里能鲁西生建煤矿,设计能力0 .4 5Mt a ,采用一对立井开拓方式,主井净直径4 .5m ,井筒深342 .75m ,净断面积为1 5 .9m2 。该井筒采用冻结法施工,冻结深度为2 76m ,冻结段井筒结构设计为双层单排钢筋砼结构。1 地质概况根据检查孔柱状图资料,井筒揭露第三、四系表土层,厚2
Shandong Lilian Lixisheng Coal Mine has a designed capacity of 0.45Mt a. It uses a pair of vertical shafts to open up the way. The main shaft has a net diameter of 4.5m and a well depth of 342.75m with a net cross-sectional area of 15.9m2. The wellbore construction by freezing method, the freezing depth of 2 76m, frozen section of wellbore structure designed double-row single-row reinforced concrete structure. 1 Geological Survey According to check hole histogram data, the wellbore to expose the third and fourth series of topsoil, thickness 2