混合水配比试验确定海底采煤突水预警水质阈值

Mixing Water Ratio Tests to Determine Water Quality Threshold of Water Inrush Pre-warning for Coal Mining Under Sea

海底下采煤为了防止海水涌入井下,对北皂矿海水和煤2上覆含水层水进行混合配比试验研究,将海水和煤2上覆含水层水按体积比从1∶9到9∶1配比混合,分别化验分析,得出混合水变化趋势明显的特征离子,以特征离子的变化幅度为基础首次确定出北皂矿海底下采煤首个工作面H2101的水质预警阈值,为防止海水溃入预警系统的运行提供依据。

In order to prevent the sea water inrush into the mine for the coal mining operation under the sea, a study on the mixing ratio test was conducted with the sea water and the water form the aquifer in the roof strata above the Seam 2. The 1：9 to 9：1 mixing ratios was made with the sea water and the water from the aquifer in the roof strata above Seam 2 according to the volume ratio. The chemical test and analysis was individually conducted. The obvious change tendency characteristic ions were obtained from the analysis. Based on the varia- tion rate of the characteristic ions, it was first to determinate the water quality early warning threshold value for the first coal mining face of H2101 coal mining face under sea, which could be the basis for the operation of the sea water inrush prewarning system.