Permian coal measure sandstone fissure water (referred to as “coal measure water,” that is, water in coal measures) is one of the important water sources for industrial and agricultural activities in mining areas. However, the regional high‐pressure grouting, one of the most widely used floor control methods, may affect the coal measure water which is connected with limestone aquifer. This study used Taoyuan mine, a typical coal mine in Huaibei coalfield, as the research area to study the influencing mechanism of a grouting treatment on the hydrogeochemical evolution of coal measure water. The hydrogeochemical characteristics and water‐rock interaction mechanism of the coal measure water before and during the treatment were evaluated using a Piper trigram, ion combination ratio, and hydrogen‐oxygen stable isotope. The anions and cations in the coal measure water before and during the treatment had the same trends at SO₄²⁻ > HCO₃⁻ > Cl⁻ and Na⁺ > Ca²⁺ > Mg²⁺, respectively. Hydrochemical types of coal measure water before treatment were mainly SO₄·Cl‐Ca·Mg, SO₄·Cl‐Na, and HCO₃‐Na, and during treatment they were mainly SO₄·Cl‐Na and HCO₃‐Na. The formation of chemical components of coal measure water before treatment was mainly caused by carbonate dissolution, sulfate dissolution, and pyrite oxidation. During the treatment, sulfate dissolution and pyrite oxidation were the main geochemical processes, and ion exchange was enhanced. Atmospheric precipitation was the source of all water samples, and all showed an obvious ¹⁸O drift.

中文翻译：

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桃园矿山注浆处理煤层中水的水文地球化学

二叠纪煤系砂岩裂隙水（简称“煤系水”，即煤系水）是矿区工农业活动的重要水源之一。但是，区域高压注浆是最广泛使用的底板控制方法之一，它可能会影响与石灰石含水层相连的测煤水。本文以淮北煤田典型煤矿桃园煤矿为研究区域，研究了灌浆处理对煤系水水化地球化学演化的影响机理。利用Piper三谱图，离子结合比和氢氧稳定同位素对煤粉水处理前后的水文地球化学特征和水岩相互作用机理进行了评估。₄ ^2-  > HCO ₃ ^-  >氯^-和Na ⁺  >的Ca ²⁺  > Mg的²⁺，分别。处理前的煤质水的水化学类型主要为SO ₄ ·Cl‐Ca·Mg，SO ₄ ·Cl‐Na和HCO ₃ ‐Na，在处理过程中主要为SO ₄ ·Cl‐Na和HCO ₃-不。处理前煤质水化学成分的形成主要是由于碳酸盐溶解，硫酸盐溶解和黄铁矿氧化引起的。在处理过程中，硫酸盐溶解和黄铁矿氧化是主要的地球化学过程，并增强了离子交换。大气降水是所有水样品的来源，并且都表现出明显的¹⁸ O漂移。