定向鉆孔技術(shù)在我國煤礦地層注漿改造中的應(yīng)用及發(fā)展
[Abstract]:This paper first introduces two main ways of directional grouting in coal mines in China, that is, ground pre-grouting of small displacement "S" directional borehole bore, large area grouting of "L" directional borehole formation with large displacement (including ground conventional horizontal directional drilling grouting). By using the ground horizontal directional drilling grouting and the downhole horizontal directional drilling grouting of existing geological boreholes, the grouting transformation of the ground "S" directional drilling depth and the horizontal displacement of the surface "L" directional boreholes in the vertical shaft of coal mine has been realized. Secondly, it is pointed out that with the continuous extension of coal mining to the deep and the increasing of single working face, the theory, technology and equipment, effect inspection and evaluation of directional drilling grouting technology are faced with. Finally, it is pointed out that it is necessary to strengthen the research on the laboratory hydrodynamic strata grouting simulation test bench, the grouting simulation experimental research, the grouting effect detection method in the deep strata and the grouting diffusion law (especially the horizontal directional drilling grouting) in the injected strata. The detection of grouting effect finds out the main factors affecting the slurry diffusion in deep strata and reveals the regularity of slurry diffusion. It can provide reference for the formulation of grouting scheme in deep strata of coal mine, and also point out the direction for the research of directional grouting technology.
【作者單位】: 天地科技建井研究院;北京中煤礦山工程有限公司;
【基金】:國家安全生產(chǎn)監(jiān)督管理總局安全生產(chǎn)重特大事故防治關(guān)鍵技術(shù)科技項(xiàng)目(yangqi-0012-2017AQ)
【分類號】:TD265.4;TD745
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