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兖州矿区均为沉积岩,无岩浆浸入,煤系地层为石炭二迭系,水文地质总的概貌是第四纪含水层较多,且水量较大,但不是太厚(各井筒附近最厚200米左右)。上侏罗系红层虽然比较松散,但含水量不是太大,一般井筒所见30～40米~3/时。煤系地层岩石比较软,含水层仅4～5层,涌水量约100米~3/时左右。岩层层理较发育,裂隙分布不均,但多为垂直斜交,且裂隙间互不贯通。灰岩中局部有溶洞,各含水层之间均有一定的隔水层。因此,矿区在第四系施工立井井筒时皆采用冻结法施工,浅部土建基础4～14米用群井降水疏干。
Yanzhou mining area is sedimentary rock, no magma immersion, coal-bearing strata of Carboniferous Permian, the general overview of hydrogeology Quaternary aquifer more, and the larger the amount of water, but not too thick (the maximum thickness of 200 meters near the wellbore about). Although the upper Jurassic red layer is relatively loose, but the water content is not too large, the general wellbore seen 30 ~ 40 m ~ 3 / hour. Coal strata rock is relatively soft, only 4 to 5 aquifers, water inflow of about 100 m ~ 3 / hour or so. Stratigraphic strata are more developed, with uneven distribution of fractures, but most of them are vertically skewed, and the fractures are not interconnected with each other. Limestone local cave, between the aquifers have a certain aquitard. Therefore, the mining area in the Quaternary system when the construction of vertical wellbore are used freezing construction, shallow foundation of 4 to 14 meters with well drainage dewatering.