The salinity, chemical properties, and migration characteristics of groundwater in coal measures are the key factors that affect the generation, migration, and reservoir of hydrogen sulfide (H2S) in low-rank coal seams. Taking the Jurassic coal and rock strata in the southeastern margin of the Junggar basin as the research object, according to the hydrogeological characteristics of the coal measures, the region is divided into 4 hydrogeological units. The coalbed methane contains a large number of secondary biogas. Along the direction of groundwater runoff, the salinity and the pH value increase gradually. The salinity in the hydrogeological units is low; it is not conducive to the propagation of sulfate-reducing bacteria and the formation of hydrogen sulfide of the Houxia, the south of Manasi River, and Hutubi and Liuhuangou area, the western region of the Miquan. The high salinity center and depressions of low water level (hydrodynamic stagnation zone) in the hydrogeological unit of the Liuhuanggou and the Miquan are the main areas for the production and enrichment of H2S in the low-rank coal. The high salinity in water is formed by infiltration, runoff, and drought evaporation. At the same time, the deep confined water environment closed well; in conditions of hydrocarbon-rich, under the action of sulfate-reducing bacteria, bacterial sulfate reduction will occur and hydrogen sulfide formed. According to the circulation characteristics of water bearing H2S in the region, imbricate and single bevel two kind generation and enrichment mode of hydrogen sulfide under the action of hydrodynamic control. The solubility of hydrogen sulfide in pure water and solutions of NaCl and Na2SO4 with different molar concentrations was calculated. The H2S solubility of groundwater in coal measures of 4 hydrogeological units was estimated.

中文翻译：

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水文地质对准噶尔盆地东南缘低阶煤硫化氢生成的影响

煤系中地下水的矿化度、化学性质和运移特征是影响低阶煤层硫化氢（H2S）生成、运移和储集的关键因素。以准噶尔盆地东南缘侏罗系煤岩地层为研究对象，根据煤系水文地质特征，将区域划分为4个水文地质单元。煤层气中含有大量的二次沼气。沿地下水径流方向，盐度和pH值逐渐升高。水文地质单元盐度低；不利于后峡、玛纳斯河以南、呼图壁、六荒沟地区硫酸盐还原菌的繁殖和硫化氢的形成，米泉西部地区。六黄沟和米泉水文地质单元中的高盐度中心和低水位洼地（水动力停滞带）是低阶煤中H2S产生和富集的主要区域。水中的高盐度是由渗透、径流和干旱蒸发形成的。同时，深层承压水环境封闭良好；在富烃条件下，在硫酸盐还原菌的作用下，细菌发生硫酸盐还原反应，形成硫化氢。根据该地区含H2S水的循环特点，在水动力控制作用下，形成叠瓦状和单斜面两种硫化氢生成富集方式。计算硫化氢在纯水和不同摩尔浓度的NaCl和Na2SO4溶液中的溶解度。估算了地下水在 4 个水文地质单位煤系中的 H2S 溶解度。