一、概况陕西黄陇侏罗纪煤田彬长矿区的水文地质背景为下白垩系层状孔隙—裂隙性承压水（K_1~z）。分为三组：上部为环河华池组（K_1~(3+4)）隔水层，以杂色泥岩、泥质粉砂岩为主夹薄层砂岩。中下部为洛河、宜君组（K_1~(Z~2)、K_1~(Z~1)）含水层。前者以中粗砂岩为主，砂砾岩次之；后者为砾岩，均系区内富水性较强的岩层。 I. Overview The hydrogeological background of the Binchang mining area in the Jurassic coalfield of Huanglong, Shaanxi is the lower Cretaceous stratified pore-fractured confined water (K_1 ~ z). Divided into three groups: the upper part of the Huhekai Formation (K 1 ~ (3 + 4)) aqueduct, variegated mudstone, argillaceous siltstone sandwiched sandstone. The middle and lower parts are Luohe and Yijun formations (K_1 ~ (Z ~ 2), K_1 ~ (Z ~ 1)) aquifers. The former is dominated by medium and coarse sandstone, followed by glutenite and the latter is conglomerate, both of which are rich in water in the area.