Study on comprehensive judgment method of mine inrush water source in complicated hydrogeological mine

In order to avoid a misjudgment with a unitary judgment method to judge a mine water inrush sources under the complicated geological condition, a com prehensive research and judgment method of the mine water inrush sources with many methods and multi paths was provided. Based on a mine water inrush from No. 13301 coal mining face in Wanglou Mine as an example, due to a water level of an aquifer in Jurassic ( J3) sandstone above the coal mining face was abnormally and s ynchronous reduced, therefore the aquifer in Jurassic ( J3) sandstone above the coal mining face was the water sources of the mine water inrush. According to a techni cal route of the analysis, verification, re-analysis and re-verification, a comprehensive study was conducted with the water chemical linking test, grouting test, water qua lity analysis, TVL radar detection, watery evaluation and other methods and means. The final results showed that there was no hydraulic connection between the aquife 「in the Sandstone J3 and the coal mining face. The results of the comprehensive study and judgement method showed that the water level abnormally reduced in Sand stone J3 was caused by the piping channels and pressure naturally balanced role. The aquifer in the sandstone ( Sand 3) above the roof of the seam was the unique wa ter sources of the mine water inrush and the water could only be drained and could not be sealed. The comprehensive study and judgement method with multi means a nd multi accesses could avoid the misjudgment problem.