摘要
为避免在复杂水文地质条件下使用单一判别方法判定突水水源的误判,提出多方法多途径综合研判突水水源方法,以王楼煤矿13301工作面突水为例,因突水过程中上覆侏罗系(J_3)砂岩含水层水位异常性同步下降,据此认为J_3砂岩含水层为突水水源,按照分析→验证→再分析→再验证的技术路线,采用水化学联通试验、注浆试验、水质分析、TVL雷达探测、富水性评价等多种方法和手段综合研究,最终查明J_3砂岩含水层与工作面之间没有水力联系。综合研判方法结果表明:由于管涌通道和压力自然平衡作用导致J3砂岩水位异常下降;煤层顶板砂岩(3砂)含水层才是唯一的突水水源,只能疏排不可封堵,采用多手段多途径综合研判方法能够避免误判问题。
In order to avoid a misjudgment with a unitary judgment method to judge a mine water inrush sources under the complicated geological condition,a comprehensive 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（ J_3） sandstone above the coal mining face was abnormally and synchronous reduced,therefore the aquifer in Jurassic（ J_3）sandstone above the coal mining face was the water sources of the mine water inrush. According to a technical route of the analysis,verification,re-analysis and re-verification,a comprehensive study was conducted with the water chemical linking test,grouting test,water quality analysis,TVL radar detection,watery evaluation and other methods and means. The final results showed that there was no hydraulic connection between the aquifer in the Sandstone J_3 and the coal mining face. The results of the comprehensive study and judgement method showed that the water level abnormally reduced in Sandstone J_3 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 water 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 and multi accesses could avoid the misjudgment problem.
出处
《煤炭科学技术》
CAS
北大核心
2017年第10期155-161,175,共8页
Coal Science and Technology
关键词
矿井突水
管涌通道
压力平衡
富水性指数
mine water inrush
piping channel
pressure balance
watery index
