煤矿安全2019，Vol.50Issue(4)：27-31,5.DOI:10.13347/j.cnki.mkaq.2019.04.007
煤矿回采工作面钻孔注水联合探测试验研究
Experimental Study on Combined Detection of Drilling Water Injection in Coal Mining face
摘要
Abstract
To solve the hidden danger of water hazard in working face and preliminarily detect the influence range of hydraulic fracturing, after the formation of working face, high-pressure water injection is carried out by using boreholes in normal coal seam area to promote the continuous development of pores and cracks in coal seam. At the same time, the water-rich area of working face is simulated. Based on the significant physical difference between the flow and diffusion of high-pressure water and the water-rich area, mining is carried out. The high density resistivity method, transient electromagnetic method and high frequency electromagnetic wave CT were used to carry out joint detection test before and after water injection in this area. The comprehensive geophysical prospecting results were compared and analyzed. Detection test results show that apparent resistivity and attenuation coefficient of coal seam near water injection point change obviously before and after water injection. The apparent resistivity decreases 2~4 times in the range of diffusion radius of about 30 m, and the attenuation coefficient increases about 20% in the range of diffusion radius of about 10 m.关键词
矿井高密度电法/矿井瞬变电磁法/高频电磁波CT/探测试验/电性参数/压裂影响范围Key words
mine high density resistivity method/mine transient electromagnetic method/high frequency electromagnetic wave CT/detection test/electrical parameter/fracturing influence range分类
矿业与冶金引用本文复制引用
刘百祥..煤矿回采工作面钻孔注水联合探测试验研究[J].煤矿安全,2019,50(4):27-31,5.基金项目
国家重点研发计划资助项目(2017YFC0804105) （2017YFC0804105）
