切片技术在煤矿回采工作面瞬变电磁法探测中的研究与应用

Research and application of slicing technology in transient electromagnetic detection in coal mining face

以鄂尔多斯市恒泰煤炭有限公司碾盘梁煤矿一井1136工作面区域顶板探测为例,通过方案设计、数据采集、数据处理、数据反演、切片成图等流程,形成二维视电阻率平面图,并组合形成立体图,结合地质资料进行异常圈定与推断,分析工作面区域顶板富水性。结果表明:通过优化采集参数,能充分满足探测深度和分辨率的要求,为工作面区域精细探测提供了依据;运用切片技术形成平面图和立体图,不仅可以从多个方位、多个角度总体把握富水区的整体分布趋势,而且可以从不同深度、不同位置具体分析含水性的强弱;经过钻探验证,准确率超过60%,充分验证了切片技术在圈定异常区方面的可靠性。

Taking the roof detection in 1 1 3 6 working face area in No.1 well in Nianpanliang Mine of Ordos Hengtai Coal Co.,Ltd.as an example,the paper applies the procedures of scheme design,data acquisition,processing,inversion and slicing into figure etc.to form a 2D apparent resistivity planar graph,and then form a stereogram.Combining with the geological data for aG nomalies delineation and inference,it analyzes the water abundance of roof in working face area. Results show that,it can fully meet the requirements of the detection depth and resolution by opG timizing the acquisition parameters,and provide basis for fine detection in mining working area;using slicing technology to form the planar graph and stereogram,can not only grasp the overall distribution trend of waterGrich area from multiple directions and angles,but also concretely anaG lyze the strength of the waterGbearing property from the different depth and positions;the drillG ing results prove the accuracy is more than 60%,and it fully validates the reliability of the slicing technology in delineating abnormal area.