Abstract One of the possible applications of available hard coal resources is their underground gasification directly in the deposit. The gas obtained in this way is discharged to the surface for use in chemical synthesis or energy purposes. The environmental risk of the technology is mainly related to the potential negative impact of the process on groundwater and surface water, due to the need to remove process condensates and the drainage of the exploitation area. The risk occurs both during the process and after its completion. This article presents the results of a pilot study carried out in the Wieczorek Mine. The coal gasification experiment was carried out over 6 months (with 2 months of gas extraction) in real conditions in a georeactor located 450 m below the surface and on the surface of the object (cooling and cleaning system for gasification products). Water monitoring was carried out before the experiment, during the experiment and 5 years after the end of the process. The analysis includes the results of underground and surface water monitoring within the range of the potential impact of the pilot plant. The paper also presents the analysis of water-tar condensate collected from the gas cleaning system.

中文翻译：

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作为地下煤气化试点过程的一部分，基于矿井水研究结果的水生风险评估

摘要 可用硬煤资源的可能应用之一是直接在矿床中进行地下气化。以这种方式获得的气体排放到地表，用于化学合成或能源用途。该技术的环境风险主要与该工艺对地下水和地表水的潜在负面影响有关，因为需要去除工艺冷凝物和开采区的排水。风险发生在过程中和完成后。本文介绍了在 Wieczorek 矿中进行的试点研究的结果。在位于地表以下 450 m 和物体表面（气化产品的冷却和清洁系统）的地质反应器中，在真实条件下进行了超过 6 个月的煤气化实验（含 2 个月的气体提取）。在实验前、实验中和过程结束后5年进行水质监测。分析包括中试工厂潜在影响范围内的地下水和地表水监测结果。本文还介绍了对从气体净化系统收集的水焦油冷凝物的分析。分析包括中试工厂潜在影响范围内的地下水和地表水监测结果。本文还介绍了对从气体净化系统收集的水焦油冷凝物的分析。分析包括中试工厂潜在影响范围内的地下水和地表水监测结果。本文还介绍了对从气体净化系统收集的水焦油冷凝物的分析。