Application of Audio Frequency Electric Perspective Exploration Technology for Multi-layer Limestone Aquifer on the Roof
马晓强MA Xiao-qiang
(陕西彬长孟村矿业有限公司,咸阳712000 )
( Shaanxi Binchang Mengcun Mining Co.,Ltd.,Xianyang 712000,China )
摘要:针对工作面顶板多层灰岩含水层在回采时通过导水裂隙带使涌水量异常增大,影响工作面正常回采问题,采用矿井音频电透视技术对工作面顶板上100m范围内富水异常区进行探查,针对不同层段汇演含水层采用不同激发频率探查。通过对青龙煤矿21601工作面探测结果表明:音频电透视12OHz激发频率能很好反映0~50m 层段灰岩富水区域分布, l5SHz激发频率能很好反映51~10Om层段灰岩富水区域分布,利用此技术能提前探明回采工作面顶板上方多层含水层富水异常分布范围,为煤矿防治水提供科学的指导意见,保障矿井的安全生产。
Abstract: In response to the problem of abnormal increase in water inflow caused by multiple layers of limestone aquifers on the roofof the working face during mining, which affects the normal mining of the working face, the mine audio electric perspective technology isused to explore the abnormal water rich area within 10Om of the roof of the working face. Different excitation frequencies are used to explorethe convergence of aquifers in different layers. The detection results of the 21601 working face in Qinglong Coal Mine show that the 12OHaexcitation frequency of audio electric perspective can well relect the distribution of water rich areas in the 0-50m interval of limestone, andthe 15HEz excitation frequency can well reflect the distribution of water rich areas in the 51-100m interval of limestone. By using thistechnology, the abnormal distribution range of water rich in muliple layers of aquifers above the roof of the mining face ean be explored inadlvance, providling scientific guidance for water prevention and control in coal mines and ensuring safe production of the mine.
关键词:回采工作面;顶板探测;多层灰岩;音频电透视法
Key words: mining face; roof detection; multi layered limestone; audio perspective
价值工程-文章出处：马晓强.顶板多层灰岩含水层音频电透视探查技术应用[J].价值工程,2023,42(19):148-150. |
